Erwin Merker Roman Merker
Programmieren lernen mit JAVA
Aus dem Bereich IT erfolgreich lernen
Lexikon für IT-Berufe von Peter Fetzer und Bettina Schneider Grundkurs IT-Berufe von Andreas M. Böhm und Bettina Jungkunz Java für IT-Berufe von Wolf-Gert Matthäus Prüfungsvorbereitung für IT-Berufe von Manfred Wünsche Grundlegende Algorithmen von Volker Heun Algorithmen für Ingenieure – realisiert mit Visual Basic von Harald Nahrstedt Grundkurs Programmieren mit Delphi von Wolf-Gert Matthäus Grundkurs Visual Basic von Sabine Kämper Visual Basic für technische Anwendungen von Jürgen Radel Grundkurs Smalltalk – Objektorientierung von Anfang an von Johannes Brauer Grundkurs Software-Entwicklung mit C++ von Dietrich May Grundkurs JAVA von Dietmar Abts Aufbaukurs JAVA von Dietmar Abts Grundkurs Java-Technologien von Erwin Merker Java ist eine Sprache von Ulrich Grude Middleware in Java von Steffen Heinzl und Markus Mathes Das Linux-Tutorial – Ihr Weg zum LPI-Zertifikat von Helmut Pils Rechnerarchitektur von Paul Herrmann Grundkurs Relationale Datenbanken von René Steiner Grundkurs Datenbankentwurf von Helmut Jarosch Datenbank-Engineering von Alfred Moos Grundlagen der Rechnerkommunikation von Bernd Schürmann Netze – Protokolle – Spezifikationen von Alfred Olbrich Grundkurs Verteilte Systeme von Günther Bengel Grundkurs Mobile Kommunikationssysteme von Martin Sauter
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Grundkurs Wirtschaftsinformatik von Dietmar Abts und Wilhelm Mülder Grundkurs Theoretische Informatik von Gottfried Vossen und Kurt-Ulrich Witt Anwendungsorientierte Wirtschaftsinformatik von Paul Alpar, Heinz Lothar Grob, Peter Weimann und Robert Winter Business Intelligence – Grundlagen und praktische Anwendungen von Hans-Georg Kemper, Walid Mehanna und Carsten Unger Grundkurs Geschäftsprozess-Management von Andreas Gadatsch Prozessmodellierung mit ARIS ® von Heinrich Seidlmeier ITIL kompakt und verständlich von Alfred Olbrich BWL kompakt und verständlich von Notger Carl, Rudolf Fiedler, William Jórasz und Manfred Kiesel Masterkurs IT-Controlling von Andreas Gadatsch und Elmar Mayer Masterkurs Computergrafik und Bildverarbeitung von Alfred Nischwitz und Peter Haberäcker Grundkurs Mediengestaltung von David Starmann Grundkurs Web-Programmierung von Günter Pomaska Web-Programmierung von Oral Avcı, Ralph Trittmann und Werner Mellis Grundkurs MySQL und PHP von Martin Pollakowski Grundkurs SAP R/3® von André Maassen und Markus Schoenen SAP ®-gestütztes Rechnungswesen von Andreas Gadatsch und Detlev Frick Kostenträgerrechnung mit SAP R/3® von Franz Klenger und Ellen Falk-Kalms Masterkurs Kostenstellenrechnung mit SAP® von Franz Klenger und Ellen Falk-Kalms Controlling mit SAP ® von Gunther Friedl, Christian Hilz und Burkhard Pedell Logistikprozesse mit SAP R/3® von Jochen Benz und Markus Höflinger IT-Projekte strukturiert realisieren von Ralph Brugger Programmieren lernen mit Java von Erwin Merker und Roman Merker
Erwin Merker Roman Merker
Programmieren lernen mit Java Leicht verständlich – Griffige Beispiele – Ausführbare Programme Mit 52 Abbildungen
Bibliografische Information Der Deutschen Bibliothek Die Deutsche Bibliothek verzeichnet diese Publikation in der Deutschen Nationalbibliografie; detaillierte bibliografische Daten sind im Internet über
abrufbar.
Prof. Dr.-Ing. habil. Reiner R. Dumke lehrt Software-Technik an der Universität Magdeburg. Er ist Leiter des dortigen Software-Messlabors sowie Leiter bzw. Mitglied in maßgeblichen Gremien auf dem Gebiet der Softwaremetrie (GI-Fachgruppe für Software-Messung und -Bewertung; DASMA; COSMIC).
Die Wiedergabe von Gebrauchsnamen, Handelsnamen, Warenbezeichnungen usw. in diesem Werk berechtigt auch ohne besondere Kennzeichnung nicht zu der Annahme, dass solche Namen im Sinne von Warenzeichen- und Markenschutz-Gesetzgebung als frei zu betrachten wären und daher von jedermann benutzt werden dürfen. Höchste inhaltliche und technische Qualität unserer Produkte ist unser Ziel. Bei der Produktion und Auslieferung unserer Bücher wollen wir die Umwelt schonen: Dieses Buch ist auf säurefreiem und chlorfrei gebleichtem Papier gedruckt. Die Einschweißfolie besteht aus Polyäthylen und damit aus organischen Grundstoffen, die weder bei der Herstellung noch bei der Verbrennung Schadstoffe freisetzen.
1. Auflage Februar 2006 Alle Rechte vorbehalten © Friedr. Vieweg & Sohn Verlag | GWV Fachverlage GmbH, Wiesbaden 2006 Lektorat: Dr. Reinald Klockenbusch / Andrea Broßler Der Vieweg Verlag ist ein Unternehmen von Springer Science+Business Media. www.vieweg.de
Das Werk einschließlich aller seiner Teile ist urheberrechtlich geschützt. Jede Verwertung außerhalb der engen Grenzen des Urheberrechtsgesetzes ist ohne Zustimmung des Verlags unzulässig und strafbar. Das gilt insbesondere für Vervielfältigungen, Übersetzungen, Mikroverfilmungen und die Einspeicherung und Verarbeitung in elektronischen Systemen.
Konzeption und Layout des Umschlags: Ulrike Weigel, www.CorporateDesignGroup.de Umschlagbild: Nina Faber de.sign, Wiesbaden Druck und buchbinderische Verarbeitung: Tˇeˇsínská tiskárna, a.s.; Tschechische Republik Gedruckt auf säurefreiem und chlorfrei gebleichtem Papier. Printed in the Czech Republic ISBN 3-8348-0068-6
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(( merker2.doc
Stand: 22.12.2005 13:39:00 ))
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(( merker2.doc
Stand: 22.12.2005 13:39:00 ))
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(( merker2.doc
Stand: 22.12.2005 13:39:00 ))
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(( merker2.doc
Stand: 22.12.2005 13:39:00 ))
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E:\merker>java -version java version "1.5.0_01" Java(TM) 2 Runtime Environment, Standard Edition (build 1.5.0_01-b08) Java HotSpot(TM) Client VM (build 1.5.0_01-b08, mixed mode, sharing).
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(( merker2.doc
Stand: 22.12.2005 13:39:00 ))
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(( merker2.doc
Stand: 22.12.2005 13:39:00 ))
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Stand: 22.12.2005 13:39:00 ))
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(( merker2.doc
Stand: 22.12.2005 13:39:00 ))
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Stand: 22.12.2005 13:39:00 ))
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Stand: 22.12.2005 13:39:00 ))
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Stand: 22.12.2005 13:39:00 ))
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public class Einfuehrung01 { public static void main(String[] args) { // Datenbeschreibung = Womit? // Methoden = Was? // Steueranweisungen = In welcher Reihenfolge? } }
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Stand: 22.12.2005 13:39:00 ))
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Stand: 22.12.2005 13:39:00 ))
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Stand: 22.12.2005 13:39:00 ))
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(( merker2.doc
Stand: 22.12.2005 13:39:00 ))
! 9PeP X\ ÎQTaQ[XRZ) 4abcT BRWaXccT \PRWT]
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args) { // Objektreferenz erzeugen // Objekt im Speicher anlegen // Nachricht senden // Nachricht senden
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Stand: 22.12.2005 13:39:00 ))
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(( merker2.doc
Stand: 22.12.2005 13:39:00 ))
! 9PeP X\ ÎQTaQ[XRZ) 4abcT BRWaXccT \PRWT]
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(( merker2.doc
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(( merker2.doc
Stand: 22.12.2005 13:39:00 ))
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Stand: 22.12.2005 13:39:00 ))
! #
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(( merker2.doc
Stand: 22.12.2005 13:39:00 ))
! 9PeP X\ ÎQTaQ[XRZ) 4abcT BRWaXccT \PRWT]
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public class Syntax02 { public static void main(String[] args) String str System.out.println(str); } }
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(( merker2.doc
Stand: 22.12.2005 13:39:00 ))
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public class Syntax03 { public static void main(String[] args) { A a = new A(); // Instanz der Klasse A erzeugen System.out.println("Hallo"); } } class A {} ÎQd]V id\ ?a^VaP\\ Bh]cPg " 2Oa >`]U`O[[ [ºaabS TSVZS`T`SW c[eO\RSZPO` c\R OcaTºV`PO` aSW\ 3a ZWSTS`b OZa /caUOPS SW\S\ 5`cz 6OZZ] 2Oa >`]U`O[[ Tc\YbW]\WS`b OZa] 8Sbhb ZraQVS\ AWS PWb bS RWS R`WbbZSbhbS HSWZS [Wb RS` USaQVZ]aaS\S\ USaQVeSWTbS\ 9ZO[[S` EO\RSZ\ AWS \Sc c[ c\R ^`ºTS\ AWS RWS ;SZRc\U RSa 1][^WZS`a EOa ^OaaWS`b eS\\ AWS RWS 9ZO[[S` eWS RWS ;SZRc\U acUUS`WS`b W\ HSWZS % SW\TºUS\- 2WS 3`YS\\b\Wa Oca RS` ]PWUS\ ÍPc\U Wab( 2WS 4SVZS`[SZRc\U [SZRSb heO` SW\S\ 4SVZS` W\ RS` HSWZS ! bObaÉQVZWQV XSR]QV ZWSUb RWS C`aOQVS SW\WUS HSWZS\ eSWbS` VW\bS\
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(( merker2.doc
Stand: 22.12.2005 13:39:00 ))
! 9PeP X\ ÎQTaQ[XRZ) 4abcT BRWaXccT \PRWT]
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class Logische01 { public static void main(String[] args) { String text; text = new String("Hallo "); System.out.println(text); text = text.concat("Welt"); } } ÎQd]V id\ ?a^VaP\\ ;^VXbRWT ES\\ AWS ROa >`]U`O[[ OcaTºV`S\ a]ZZbS SWUS\bZWQV RS` BSfb 6OZZ] ESZb OcaUSUS PS\ eS`RS\ :SWRS` TSVZb RWS ESZb eSWZ RS` >`]U`O[[WS`S` dS`aSVS\bZWQV ]RS` c\eWaaS\R \WQVb PSROQVb VOb ROaa RWS 0STSVZS aS_cS\bWSZZ OcaUSTºV`b eS`RS\ eS\\ S` \WQVba O\RS`Sa d]`aWSVb 9]``WUWS`S\ AWS ROa >`]U`O[[ c\R TºV`S\ AWS Sa Oca :rac\UaVW\eSWa( 2WS @SWVS\T]ZUS RS` 0STSVZS W[ ?cSZZbSfb abW[[b \WQVb 2Oa /cTTW\RS\ d]\ Z]UWaQVS\ 4SVZS`\ W\ >`]U`O[[S\ USVr`b hc RS\ aQVeWS`WUabS\ c\R OcTeÉ\RWUabS\ /cTUOPS\ W[ A]TbeO`S3\beWQYZc\Ua^`]hSaa ;O\ \S\\b RWSaS\ D]`UO\U BSabS\ 6W\hc Y][[b ROaa PSW[ BSabS\ d]\ SWUS\S\ >`]U`O[[S\ SW\ ^agQV]Z]UWaQVSa >`]PZS[ hc ºPS`eW\RS\ Wab( ;O\ a]ZZ VS`OcaTW\RS\ eSZQVS 4SVZS` ROa SWUS\S >`]U`O[[ S\bVÉZb e] [O\ R]QV dWSZ SVS` \OQVeSWaS\ [rQVbS ROaa Sa TSVZS`T`SW Wab DWSZZSWQVb VWZTb T]ZUS\RS ESWaVSWb( ES\\ RS` 4SVZS` \WQVb RO Wab e] [O\ WV\ acQVb RO\\ Wab S` e]O\RS`a ;O\QV[OZ eW`R OcQV RS` 0SU`WTT 2SPcUUW\U Tº` RWS 4SVZS`acQVS c\R PS`SW\WUc\U PS\cbhb OZa PcU eW`R SW\ 1][^cbS`TSVZS` PShSWQV\Sb 3W\ ES`YhScU b]]Z hc[ 2SPcUUS\ \S\\b [O\ 2SPcUUS`>`]U`O[[ 2O[Wb YO\\ SW\ >`]U`O[[ Y]\b`]ZZWS`b c\R aQV`WbbeSWaS [Wb SW\hSZ\S\ 6OZbS^c\YbS\ heWaQVS\ RS\ AQV`WbbS\ OcaUSTºV`b eS`RS\ 3W\ 2SPcUUS` Wab [SWabS\a 0SabO\RbSWZ SW\S` 3\beWQYZc\Uac[USPc\U 723 "
(( merker2.doc
Stand: 22.12.2005 13:39:00 ))
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#
(( merker2.doc
Stand: 22.12.2005 13:39:00 ))
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(( merker2.doc
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Stand: 22.12.2005 13:39:00 ))
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(( merker2.doc
Stand: 22.12.2005 13:39:00 ))
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RS[ PW\É`S\ 7\VOZb \]QV [Wb RS` VSfORShW[OZS\ 0ShSWQV\c\U RSa 7\VOZba eW`R RS` >`]U`O[[WS`S` W[ >`]U`O[[ \]`[OZS`eSWaS O`PSWbS\ ?a^VaP\\ 0bRXX ) 0aQTXcT] \Xc ST\ 1dRWbcPQT] 0 X\ 9PeP?a^VaP\\ public class Ascii01 { public static void main(String args[]) { char zeichen = 'A'; System.out.println(zeichen); } } 3a Wab OcQV [rUZWQV O\abSZZS RSa HSWQVS\a RSaaS\ >ZObh\c[[S` W\ RS` BOPSZZS RSa /A1771]RSa OcahcUSPS\ ?a^VaP\\ 0bRXX !) 0dbVTQT] STa ?[Pci]d\\Ta TX]Tb ITXRWT]b public class Ascii02 { public static void main(String args[]) { char zeichen = 'A'; System.out.println((byte)zeichen); } } AWS eS`RS\ OPS` W\ RS\ \OQVT]ZUS\RS\ 0SWa^WSZS\ aSVS\ ROaa Tº` W\bS`\ObW]\OZS >`]U`O[[S USYS\\hSWQV\Sb Rc`QV [SV`S`S A^`OQVS\ c\bS`aQVWSRZWQVS A]\RS`hSW QVS\ YcZbc`SZZS 0Sa]\RS`VSWbS\ PSW RS` 2O`abSZZc\U d]\ HOVZS\ ]RS` 2Obc[aO\UO PS\ cae Sa VÉcTWU \]beS\RWU Wab HSWQVS\ c[hcT]`[S\ ]RS` W\RWdWRcSZZ hc W\bS` ^`SbWS`S\ 2Ohc aW\R RSbOWZZWS`bS 9S\\b\WaaS RS` 1]RWS`c\UaT]`[S\ c\R RS` dS`eS\ RSbS\ HSWQVS\Q]RSa S`T]`RS`ZWQV 2SaeSUS\ a]ZZ ROa \ÉQVabS >`]U`O[[ RS[]\ab`WS`S\ eWS RS` >`]U`O[[WS`S` a] e]VZ RS\ PW\É`S\ 7\VOZb OZa OcQV RWS VSfORShW[OZS @S^`ÉaS\bObW]\ SW\Sa 0gbSa Oca USPS\ YO\\ ?a^VaP\\ 0bRXX ") 1X]ÊaTa d]S WTgPSTiX\P[Ta FTac TX]Tb ITXRWT]b public class Ascii03 { public static void main(String args[]) { char zeichen = 'A'; System.out.println(Integer.toBinaryString(zeichen)); System.out.println(Integer.toHexString(zeichen)); } } 2WS S`abS\ ! HSWQVS\ RSa /A1771]RSa aW\R Tº` AbScS`hSWQVS\ Q]\b`]Z QVO`OQbS` `SaS`dWS`b SbeO Tº` RWS AbScS`c\U SW\Sa 2`cQYS`a 2WSaS c\R`cQYPO`S\ 9]\b`]ZZhSW
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(( merker2.doc
Stand: 22.12.2005 13:39:00 ))
" "
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d\fP]ST[] public class Ascii06 { public static void main(String args[]) { String bits = "5A"; System.out.println((char)Integer.parseInt(bits, 16)); } }
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(( merker2.doc
Stand: 22.12.2005 13:39:00 ))
" 8]U^a\PcX^]T] \PbRWX]T[[ SPabcT[[T]
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(( merker2.doc
Stand: 22.12.2005 13:39:00 ))
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(( merker2.doc
Stand: 22.12.2005 13:39:00 ))
" 8]U^a\PcX^]T] \PbRWX]T[[ SPabcT[[T]
?a^VaP\\ 0bRXX ') 1XcZ^\QX]PcX^] X\ 0aQTXcbb_TXRWTa U¶a SXT IPW[ !& public class Ascii08 { public static void main(String args[]) { int zahl = 270; System.out.println(Integer.toBinaryString(zahl)); } } 4º` RWS `SW\ PW\É`S 1]RWS`c\U a^WSZb RWS /A177BOPSZZS YSW\S @]ZZS RS\\ Sa eW`R VWS` \WQVb SW\ SW\hSZ\Sa HSWQVS\ a]\RS`\ RWS HOVZ OZa 5O\hSa dS`aQVZºaaSZb /ca RS` BO PSZZS /PP ! ! YO\\ [O\ h 0 OPZSaS\ ROaa RWS 2ShW[OZhOVZ $# `SW\ PW\É` eWS T]ZUb Q]RWS`b eW`R( c\R PWbbS PSOQVbS\ AWS ROaa aWS RO[Wb US\Oc a] Q]RWS`b eW`R eWS RS` 5`]zPcQVabOPS / ÎQd]V
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http://www.unicode.org
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(( merker2.doc
Stand: 22.12.2005 13:39:00 ))
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(( merker2.doc
Stand: 22.12.2005 13:39:00 ))
" 8]U^a\PcX^]T] \PbRWX]T[[ SPabcT[[T]
4]`[ Kdffff e]PSW ffff RS` VSfORShW[OZS ES`b Wab RS\ ROa HSWQVS\ W[ C\WQ]RS VOb RS` 1]RS^]W\b 2S` >`ÉTWf Jc abSVb Tº` C\WQ]RS 7[ \OQVT]ZUS\RS\ >`]U`O[[ a]ZZ SW\ C\WQ]RSHSWQVS\ PSO`PSWbSb eS`RS\ ROa OcQV [Wb SW\S[ \]`[OZS\ 4]\b O\UShSWUb eS`RS\ YO\\( ROa >`]hS\bhSWQVS\ /\US \][[S\ c\aS`S BOabObc` S\bVÉZb RWSaSa HSWQVS\ \WQVb RO\\ Yr\\bS Sa W[ >`]U`O[[ S`hScUb eS`RS\ 2Oa HSWQVS\ VOb W[ C\WQ]RS RS\ 1]RS^]W\b # ?a^VaP\\ D]XR^ST ) D]XR^STITXRWT] X\ ?a^VaP\\ TaiTdVT] public class Unicode01 { public static void main(String args[]) char c = '\u0025'; System.out.println(c); } }
{
2Oa HSWQVS\ Wab SW\ /A177HSWQVS\ Sa ZWSUb W[ 0S`SWQV RS` S`abS\ & HSWQVS\ c\R R]`b Wab RS` C\WQ]RS WRS\bWaQV [Wb RS[ /A1771]RS 3beOa ^`]PZS[ObWaQVS` eW`R ROa /`PSWbS\ [Wb HSWQVS\ RWS hc[ S`eSWbS`bS\ /A1771]RS USVr`S\ OZa] W[ 0S`SWQV & 44 ZWSUS\ 6WS` eW`R SW\ 3\Q]RW\U \]beS\RWU c\R ROTº` eW`R SW\S C[ aSbhc\UabOPSZZS SW\USaSbhb 2WS \OQVT]ZUS\RS\ 0SWa^WSZS aW\R A^ShWOZTÉZZS RWS Tº` 3W\abSWUS` hc\ÉQVab eS\WUS` 0SRScbc\U VOPS\ c\R RSaVOZP \WQVb c\PSRW\Ub O[ /\TO\U Rc`QVUSO`PSWbSb eS`RS\ [ºaaS\ 8SR]QV eW`R SW\ >`]U`O[[WS`S` W\ RS` >`OfWa W[[S` eWSRS` OcT >`]PZS[S ab]zS\ RWS [Wb RS` 1]RWS`c\U d]\ HSWQVS\ 3\Q]RW\U hc bc\ VOPS\ 7\aPSa]\RS`S PSW[ W\bS`\ObW]\OZS\ 2ObS\OcabOcaQV PSW 7\bS`\SbO\eS\Rc\US\ PSW[ /`PSWbS\ [Wb 6B;: c\R F;: Wab RWSaSa BVS[O eWQVbWU 7[ 0SRO`TaTOZZ YO\\ RWSaSa BVS[O OZa] \OQVUSaQVZOUS\ eS`RS\
0G\G+TIUJOTMY;:, ;:, [TJ/95 2S` C\WQ]RS aSZPab Wab ZSRWUZWQV SW\S BOPSZZS W\ RS` XSRSa HSWQVS\ SW\S >ZObh\c[[S` 1]RS^]W\b VOb 2O[Wb Wab heO` RWS 0SRScbc\U SW\RScbWU TSabUSZSUb OPS` RS` 1]RS ^]W\b aOUb \]QV \WQVba RO`ºPS` Oca eWS RWS HSWQVS\ W[ 1][^cbS` ]RS` OcT SW\S[ 2ObS\b`ÉUS` eW`YZWQV OPUSPWZRSb eS`RS\ 2WS SW\TOQVabS 4]`[ eÉ`S Sa eS\\ XSRSa HSWQVS\ W\ 0gbSa Phe ! ]RS` " 0gbSa PSW[ S`eSWbS`bS\ C\WQ]RS USa^SWQVS`b eº`RS 2Oa Wab OPS` h 0 W[[S` RO\\ c\STTSYbWd eS\\ RWS 2ObS\ hc[ 5`]zbSWZ W[ 0S`SWQV d]\ Jc PWa Jc 44 ZWSUS\ eSWZ ROTº` SW\ 0gbS Oca`SWQVS\ eº`RS /ca RWSaS[ 5`c\R ec`RS\ RWS dS`aQVWSRS\S\ DS`aW]\S\ RSa D\WdS`aOZ 1VO`OQbS` ASb C`O\aT]`[ObW]\ 5]`[Ob CB4 S\be]`TS\ EÉV`S\R 8OdO W\bS`\ [Wb RS[ CB4 $ 4]`[Ob O`PSWbSb PSW RS[ OZZS HSWQVS\ W\ $ PWb dS`aQVZºaaSZb eS`RS\ YO\\ Tº` RWS /caZOUS`c\U RS` 2ObS\ OcT SW\S[ 2ObS\b`ÉUS` SW\ O\RS`Sa 4]`[Ob h 0 CB4& US
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(( merker2.doc
Stand: 22.12.2005 13:39:00 ))
" %
D]XR^ST
eÉVZb eS`RS\ 2WSaSa 4]`[Ob ^`]RchWS`b Y][^OYbS 2]Yc[S\bS Tº` S\UZWaQVa^`OQVWUS BSfbS 2S` B`O\aT]`[ObW]\ad]`UO\U eW`R 3\Q]RW\U US\O\\b 2S`hSWb aW\R R`SW 3\Q]RW\Ua W[ 3W\aObh( CB4& CB4 $ c\R CB4! 2WS HOVZS\ & $ ]RS` ! USPS\ O\ eWSdWSZ 0Wba abO\RO`R[ÉzWU Tº` RWS A^SWQVS`c\U SW\Sa HSWQVS\a US\][[S\ eS`RS\ DC5 % 8OdO O`PSWbSb W\bS`\ OcaaQVZWSzZWQV [Wb RS[ CB4 $3\Q]RW\U 2Oa PSRScbSb ROaa SW\ \]`[OZSa HSWQVS\ W\\S`VOZP RS` 8D; [Wb $ PWb dS`aQVZºaaSZb eW`R ES\\ ROa \WQVb `SWQVb b`WTTb ROa AgabS[ PSa]\RS`S D]`YSV`c\US\ c[ U`rzS`S 3W\VSWbS\ hc PWZRS\ R V RO\\ eW`R SW\ HSWQVS\ Oca\OV[aeSWaS W\ ! ]RS` " 0gbSa dS`aQVZºaaSZb c\R S\ba^`SQVS\R USYS\\hSWQV\Sb 2Oa Wab `SZObWd OcTeÉ\RWU OPS` [O\ USVb ROd]\ Oca ROaa Sa aWQV ROPSW c[ /ca\OV[S\ VO\RSZb DC5' ES\\ RWS hc a^SWQVS`\RS\ HSWQVS\ hc[ 5`]zbSWZ RS\ eSabSc`]^ÉWaQVS\ A^`OQVS\ S\babO[[S\ Wab RS` CB4 $1]RS \Obº`ZWQV RWS `SW\abS >ZObhdS`UScRc\U RS\\ RO\\ `SWQVb 0gbS ^`] HSWQVS\ Oca 2O`c[ ec`RS RS` CB4&AbO\RO`R RSTW\WS`b 2WSaSa 3\Q]RW\U YO\\ h 0 O\USUSPS\ eS`RS\ PSW[ AQV`SWPS\ d]\ BSfbS\ OcT SfbS`\S 2O bS\b`ÉUS` ]RS` PSW[ /cabOcaQV [Wb O\RS`S\ AgabS[S\ 7\\S`VOZP RS` 8D; PZSWPb Sa PSW[ CB4 $3\Q]RW\U Tº` RWPa c\R BcaX]VBg^S\ aWSVS 9O^WbSZ " ZSRWUZWQV Tº` RS\ 2ObS\OcabOcaQV YO\\ SbeOa O\RS`Sa O\USUSPS\ eS`RS\ 8B>''$( ;PcX]
0SW RS` 7\abOZZObW]\ RSa 829 Wab SW\S 2STOcZbC[aSbhbOPSZZS OPVÉ\UWU d]\ RS[ :É\ RS`Q]RS TSabUSZSUb e]`RS\ 7\ ESabSc`]^O Wab RWSa 7A=&&#' :ObW\/Z^VOPSb 2WS aS BOPSZZS Wab eSWbUSVS\R WRS\bWaQV [Wb RS\ S`abS\ #$ HSWQVS\ RS` C\WQ]RSBOPSZZS 3W\S /ca\OV[S Wab h 0 ROa 3c`]hSWQVS\ 7[ 2STOcZb1VO`OQbS`aSb 7A=&&#' VOb ROa 3c`]hSWQVS\ RWS >ZObh\c[[S` & W[ C\WQ]RS ROUSUS\ RS\ 1]RS^]W\b /1 EW` eS`RS\ \c\ YZÉ`S\ eOa ^OaaWS`b eS\\ [Wb RWSaS[ HSWQVS\ USO`PSWbSb eW`R ?a^VaP\\ D]XR^ST !) ITXRWT] PdvTaWP[Q STb 0B2882^ST
public class Unicode02 { public static void main(String args[]) char c = '\u20AC'; System.out.println(c); } }
{
0SW RS` /caTºV`c\U RWSaSa >`]U`O[[a h 0 W\ SW\S` 2=A0]f c\bS` ;AEW\R]ea eW`R ROa 3c`]hSWQVS\ \WQVb O\UShSWUb 2Oa ZWSUb RO`O\ ROaa ;WQ`]a]Tb R]`b [Wb SW\S[ O\RS`S\ 1VO`OQbS`aSb O`PSWbSb [Wb 1>&# /PS` eS\\ AWS RWS /caUOPS RSa >`] U`O[[a D]XR^ST ! c[ZSWbS\ W\ SW\S 2ObSW [Wb RS[ 1][[O\R) YPeP D]XR^ST ! - !'
(( merker2.doc
Stand: 22.12.2005 13:39:00 ))
" 8]U^a\PcX^]T] \PbRWX]T[[ SPabcT[[T]
P cgc c\R RWSaS 2ObSW RO\\ [Wb SW\S[ VSfORShW[OZS\ 3RWb]` O\hSWUS\ PSY][[S\ AWS T]ZUS\RS\ 2ObSWW\VOZb O\UShSWUb(
/PP ! "( 7\VOZb RS` /caUOPSRObS\ c[USZSWbSb W\ SW\S 2ObSW 2WS 2ObSW S\bVÉZb OZa] ' 2 / 2Oa aW\R RWS R`SW VSfORShW[OZS\ >ZObh\c[[S`\ Tº` ROa 3c`]hSWQVS\ Tº` 1@ c\R Tº` :4 W[ S`eSWbS`bS\ /A1771]RS 2O[Wb Wab PSeWSaS\ ROaa SW\S Ocb][ObWaQVS C[aSbhc\U S\Q]RW\U abObbUSTc\RS\ VOb( W\\S`VOZP RS` 8D; UWZb RWS C\WQ]RSDS`aQVZºaaSZc\U CB4 $ PSW[ AQV`SWPS\ ec`RS ROa HSWQVS\ Jc /1 c[USaSbhb W\ RS\ /A177ES`b & S\ba^`SQVS\R RS\ 7A=&&#' 1]RWS``SUSZ\ ÎQd]VT] ?a^VaP\\ D]XR^ST ! ÎQd]V ( AbO`bS\ AWS ROa >`]U`O[[ S`\Scb Oca SW\S` 3W\UOPSOcTT]`RS`c\U 2=A 0]f 5SPS\ AWS ROhc T]ZUS\RS\ 0STSVZ SW\( java Unicode02 > test.html 2ORc`QV eW`R RWS /caUOPS c[USZSWbSb W\ SW\S 6B;:2ObSW 2WSaS Yr\\S\ AWS RO\\ W\ SW\S[ 0`]eaS` O\hSWUS\ ES\\ R]`b OZa 1]RWS`c\U ESabSc`]^ÉWaQV 7A= USeÉVZb ec`RS [ºaabS ROa 3c`]hSWQVS\ O\UShSWUb eS`RS\ >`]PWS`S\ AWS OcQV SW\S O\RS`S 1]RWS`c\U W[ 7\bS`\Sb 3f^Z]`S` Rc`QV /`][WZZSHSWQVS\ RO`USabSZZb BSabS\ AWS eWS RWSaSa HSWQVS\ d]\ RS\ c\bS` aQVWSRZWQVS\ >`]U`O[[S\ RO`USabSZZb eW`R O^WS` RO`USabSZZb eS`RS\ 2Ohc eS`RS\ RWS 4]\ba [Wb WV`S\ c\bS`aQVWSRZWQVS\ AQV`WTbO`bS\ SW\USaSbhb C\R hc[ `]U`O[[ D]XR^ST " eS`RS\ 7\T]`[ObW]\S\ RSa 2ObS\bg^a QhcT OZa CB4&1]RS7\T]`[ObW]\S\ W\bS`^`SbWS`b c\R W\ SW\S\ Ab`W\U c[USeO\RSZb c\R RO\OQV eWSRS` hc`ºQY 2OPSW eSQVaSZb ROa 3\Q]RW\U d]\ CB4& \OQV CB4 $ `]U`O[[ \]QV \WQVb Y][^ZSbb dS`abO\RS\ eS`RS\ Sa RWS\b OcaaQVZWSzZWQV RS` 2]Yc[S\bObW]\ c\R YO\\ a^ÉbS` O[ 3\RS RSa 0cQVSa PSW 0SRO`T OZa ;cabS` dS`eS\RSb eS`RS\ "
(( merker2.doc
Stand: 22.12.2005 13:39:00 ))
" %
D]XR^ST
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public class Unicode03 { public static void main (String args[]) throws Exception { // ASCII als nach Unicode konvertieren byte[] ascii = {'a', 'b', 'c'}; String str = new String(ascii, "ISO-8859-1"); System.out.println(str); // Unicode (UTF-16) nach UTF-8 konvertieren byte[] utf8 = str.getBytes("UTF8"); for (int i=0; i
9OTJGRRK1USVGZOHOROZoZYVXUHRKSKJ[XIN;TOIUJKMKRYZ% ES\\ OZZS 1][^cbS`agabS[S c\R >`]U`O[[S [Wb RS[ C\WQ]RS O`PSWbS\ eº`RS\ c\R OcQV OZZS d]`VO\RS\S\ 2ObS\PSabÉ\RS W[ C\WQ]RS USa^SWQVS`b eÉ`S\( XO A]ZO\US Sa XSR]QV \]QV /A1777\T]`[ObW]\S\ UWPb( \SW\ 4º` RWS 7\bS`^`SbObW]\ d]\ /A177 7\T]`[ObW]\S\ Wab Sa S`T]`RS`ZWQV RS\ PSW RS` 9]RWS`c\U PS\cbhbS\ AbO\RO`R hc YS\ \S\ h 0 7A= &&#' 2SaeSUS\ S`ZOcPS\ BSQV\]Z]UWS\ RWS RS\ C\WQ]RS PS\cbhS\ eWS F;: ]RS` 8OdO RWS /\UOPS SW\S` 1]RS^OUS 2WSaSa 3\Q]RW\U a^WSZb SW\S S\b aQVSWRS\RS @]ZZS PSW W\bS`\ObW]\OZS\ /\eS\Rc\US\ c\R PSW[ 2ObS\OcabOcaQV 7\ 8OdO UWPb Sa SW\S UO\hS @SWVS d]\ 9ZOaaS\ RWS aWQV [Wb RS` :]YOZWaWS`c\U OZa] OcQV [Wb RS` /caeOVZ RS` 3\Q]RW\UBOPSZZS PSTOaaS\ /PS` RWS /`b RS` 1]RWS`c\U /A177 301271 C\WQ]RS c\R RWS 2O`abSZZc\U RS` HSW QVS\aÉbhS Rc`QV dS`aQVWSRS\S 4]\ba aW\R \WQVb RWS SW\hWUS\ 6W\RS`\WaaS PSW[ 2O bS\OcabOcaQV heWaQVS\ RS\ 1][^cbS`\ 5^[VT]ST 5aPVT] bX]S idbÊci[XRW id Z[ÊaT] SP\Xc TX]T UTW[TaUaTXT ETabcÊ]SX Vd]V ifXbRWT] ?Pac]Ta] SXT bXRW PdU eTabRWXTST]T] ?[PccU^a\T] QTUX]ST] \»V[XRW Xbc) •
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•
ES\\ 2ObSWS\ OcaUSbOcaQVb eS`RS\ aW\R 7\T]`[ObW]\S\ ºPS` ROa 2ObSWT]`[Ob \]beS\RWU 8S \OQV 0Sb`WSPaagabS[ UWPb Sa Ab`SO[]`WS\bWS`bS 2ObSWY]\hS^bS e] "
(( merker2.doc
Stand: 22.12.2005 13:39:00 ))
" 8]U^a\PcX^]T] \PbRWX]T[[ SPabcT[[T]
RWS 7\bS`^`SbObW]\ SdS\bcSZZS` AbScS`hSWQVS\ Rc`QV ROa >`]U`O[[ S`T]ZUS\ [caa ]RS` @SQ]`R 0Z]QY4]`[ObS PSW RS\S\ ROa 0Sb`WSPaagabS[ RWS Ab`cYbc` S`YS\\b •
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•
ES`RS\ BSfbRObS\ 7\T]`[ObW]\S\ Oca 2ObS\PO\YS\ ]PXSYb]`WS\bWS`bS\ /\eS\ Rc\US\ aS`WOZWaWS`bS 7\abO\hS\ ]RS` ;cZbW[SRWORObS\ eWS Br\S ]RS` 0WZRS` OcaUSbOcaQVb- /ZZSW\ RWS 2O`abSZZc\U SW\Sa HSWZS\eSQVaSZa W\ BSfbRObSWS\ eW`R c\bS`aQVWSRZWQV Q]RWS`b( W\ ;AEW\R]ea Rc`QV RWS /A1771@ :4HSWQVS\ W\ C\Wf \c` Rc`QV SW\ :4HSWQVS\ c\R W[ /^^ZSAgabS[ c C \c` Rc`QV SW\ 1@HSWQVS\
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7[ /`PSWbaa^SWQVS` c\R OcT SfbS`\S\ 2ObS\a^SWQVS`\ SW\Sa 1][^cbS`a TW\RS\ aWQV \WS[OZa HSWQVS\ ]RS` 2ShW[OZhOVZS\ a]\RS`\ W[[S` \c` 0Wb[cabS` 2WSaS eS`RS\ W\bS`^`SbWS`b O\VO\R d]\ 1]RSbOPSZZS\ 2WSaS BOPSZZS\ S\bVOZbS\ @SUSZ\ Tº` RWS Hc ]`R\c\U d]\ HSWQVS\ hc PW\É`S\ HOVZS\ 8SRS[ HSWQVS\ Wab SW\S SW\RScbWUS >ZObh \c[[S` hcUSeWSaS\ RWS RO\\ PW\É` dS`aQVZºaaSZb eW`R 3a UWPb dS`aQVWSRS\S 1]RS bOPSZZS\( /A177 301271 ]RS` C\WQ]RS 7\ 8OdO eS`RS\ RWS ES`bS d]\ RWPa c\R BcaX]VDO`WOPZS\ W\bS`\ OZa C\WQ]RS CB4 $3\Q]RW\U USa^SWQVS`b /cQV :WbS`OZS aWSVS 9O^WbSZ # Yr\\S\ C\WQ]RSHSWQVS\ S\bVOZbS\ /czS`RS[ Yr\\S\ 9][[S\bO`S c\R 7RS\bWTWS` Oca C\WQ]RSHSWQVS\ hc aO[[S\USaSbhb aSW\ 2O a]e]VZ RWS 2ObSWagabS[S OZa OcQV RWS 3W\ c\R /caUOPSUS`ÉbS a]eWS RWS >`] U`O[[WS`b]]Za VScbS \]QV \WQVb Rc`QVUÉ\UWU [Wb C\WQ]RS O`PSWbS\ Wab W[[S` RO\\ eS\\ RWS 2ObS\ RWS 8OdO DW`bcSZZS ;OaQVW\S 8D; dS`ZOaaS\ SW\S 9]\dS`bWS`c\U \rbWU 2Oa UZSWQVS UWZb Tº` ROa 3W\ZSaS\ RS` 2ObS\ W\ RWS 8D; 2WS B`O\aT]`[ObW]\ d]\ 0gbSQ]RWS`c\US\ W\ C\WQ]RS Wab \c` [rUZWQV eS\\ hcaÉbhZW QVS 7\T]`[ObW]\S\ ºPS` RWS dS`eS\RSbS 1]RS^OUS hc` DS`TºUc\U abSVS\ 2S` ?cSZZbSfb SW\Sa 8OdO>`]U`O[[Sa YO\\ C\WQ]RS S\bVOZbS\ S\beSRS` RW`SYb [Wb USSWU\SbS\ 3RWb]`S\ SW\USUSPS\ ]RS` OZa a] US\O\\bS 3aQO^SAS_cS\h Jcffff e] PSW ffff RWS 1]RS^]W\bHOVZ RSa HSWQVS\a Wab
"
(( merker2.doc
Stand: 22.12.2005 13:39:00 ))
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(( merker2.doc
Stand: 22.12.2005 13:39:00 ))
# :[PbbT] d]S P]STaT Ch_T] QTbRWaTXQT] STR[PaPcX^]
*KQRGXGZOUTYGT]KOY[TM
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0SWa^WSZ Tº` SW\S 2ObS\RSYZO`ObW]\(
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text;
;Wb RWSaS` /\eSWac\U eW`R RS[ 1][^WZS` [WbUSbSWZb ROaa d][ 2ObS\bg^ BcaX]V SW\ =PXSYb PS\rbWUb eW`R ROa c\bS` RS[ 0ShSWQV\S` cTgc OR`SaaWS`b eS`RS\ YO\\ 2S` 0ShSWQV\S` cTgc eW`R OcQV OZa @STS`S\hdO`WOPZS PShSWQV\Sb RS\\ S` YO\\ SW\S @STS `S\h OcT SW\ PSabW[[bSa BcaX]V=PXSYb S\bVOZbS\ 2S` 2ObS\bg^ BcaX]V Wab W\ SW\S` [WbUSZWSTS`bS\ 9ZOaaS RS` AbO\RO`R0WPZW]bVSY SfOYb PSaQV`WSPS\ 2]`b abSVb e]`Oca RWSaS` 2ObS\bg^ PSabSVb SW\ BcaX]V Wab Oca SW\hSZ\S\ HSWQVS\ hcaO[[S\USaSbhb c\R eSZQVS DS`O`PSWbc\Ua[rUZWQVYSWbS\ RS[ >`]U`O[ [WS`S` hc` DS`TºUc\U abSVS\ h 0 YO\\ [O\ BcaX]V OcaUSPS\ dS`UZSWQVS\ Y]^WS`S\ c\R Y]\YObS\WS`S\ OZa] heSW Ab`W\Ua hcaO[[S\TOaaS\ hc SW\S[ SW\hWUS\ cae 3W\S 0Sa]\RS`VSWb Wab ROaa PSW RS` 2SYZO`ObW]\ [SV`S`S 0ShSWQV\S` O\USUSPS\ eS` RS\ Yr\\S\ h 0 double gehalt, stundenlohn, pension, rente; ;Wb RWSaS` 2SYZO`ObW]\ eS`RS\ dWS` 0ShSWQV\S` PSYO\\b US[OQVb ROPSW Wab RS` 2O bS\bg^ \c` SW\[OZ O\USUSPS\ 7\ RS` /cThÉVZc\U eS`RS\ RWS 0ShSWQV\S` eWS Tº` /cThÉVZc\US\ W\ 8OdO US\S`SZZ ºPZWQV Rc`QV 9][[O USb`S\\b 4º` XSRS RWSaS` dWS` DO`WOPZS\ UWZb ROaa RS` 2ObS\bg^ S^dQ[T Wab /ZZS`RW\Ua eW`R RWSaS AQV`SWPeSWaS \WQVb S[^T]VZS\ eSWZ RWS :SaPO`YSWb RSa ?cSZZbSfbSa RORc`QV ZSWRSb 2WS 2SYZO`ObW]\aO\eSWac\U YO\\ hcaÉbhZWQV SW\S 9ZOcaSZ hc[ 7\WbWOZWaWS`S\ S\bVOZbS\ 2WSaS 9ZOcaSZ RS` 7\WbWOZWhS` PSabSVb Oca RS[ HceSWac\Ua]^S`Ob]` + c\R SW\S[ /caR`cQY RS` RS\ /\TO\UaeS`b a^ShWTWhWS`b h 0
int zahl = 4700;
""
(( merker2.doc
Stand: 22.12.2005 13:39:00 ))
# !
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ÎQd]V ! id\ ?a^VaP\\ 3TZ[PaPcX^] 0WbbS ºPS`^`ºTS\ AWS eWS RS` 1][^WZS` `SOUWS`b eS\\ AWS dS`acQVS\ RS\ T]ZUS\RS\ 0STSVZ SW\hcTºUS\( text = text + 5; "#
(( merker2.doc
Stand: 22.12.2005 13:39:00 ))
# :[PbbT] d]S P]STaT Ch_T] QTbRWaTXQT] STR[PaPcX^]
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public class Deklaration02 { public static void main(String[] args) { char c = 'A'; System.out.println(c); } } 7\ RS` R`WbbS\ HSWZS eW`R RWS DO`WOPZS R d][ 2ObS\bg^ RWPa RSTW\WS`b d]S UZSWQVhSWbWU W\WbWOZWaWS`b R V Sa eW`R WV` SW\ /\TO\UaeS`b hcUSeWSaS\ ÎQd]V id\ ?a^VaP\\ 3TZ[PaPcX^] ! BSabS\ AWS RWS @SOYbW]\ RSa 1][^WZS`a eS\\ AWS dS`acQVS\ RWS DO`WOPZS Q [Wb RS\ PSWRS\ HSWQVS\ /0 hc W\WbWOZWaWS`S\ 3a Y][[b RWS 4SVZS`[SZRc\U( c\QZ]aSR QVO`OQbS` ZWbS`OZ eSWZ \OQV RS[ S`abS\ HSW QVS\ ROa OPaQVZWSzS\RS 6]QVY][[O TSVZb 3W\S DO`WOPZS d][ 2ObS\bg^ RWPa YO\\ \c` SW\ SW\hSZ\Sa HSWQVS\ a^SWQVS`\ S 3Ta 2^\_X[Ta ¶QTafPRWc SXT ETaPaQTXcd]V ch_XbXTacTa 3PcT] D]` SW\S[ HcU`WTT OcT RS\ ES`b SW\S` DO`WOPZS\ ºPS`^`ºTb RS` 1][^WZS` a]eSWb [rUZWQV ]P RWS DO`WOPZS RSYZO`WS`b Wab c\R ]P SW\ Y]``SYbS` 7\VOZb d]`VO\RS\ Wab A] [caa d]` RS` S`abS\ 0S\cbhc\U SW\ ^OaaS\RS` ES`b hcUSeWSaS\ aSW\ S\beSRS` Rc`QV SW\S 7\WbWOZWaWS`c\U ]RS` Rc`QV SW\S ES`bShceSWac\U "$
(( merker2.doc
Stand: 22.12.2005 13:39:00 ))
# !
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"%
(( merker2.doc
Stand: 22.12.2005 13:39:00 ))
# :[PbbT] d]S P]STaT Ch_T] QTbRWaTXQT] STR[PaPcX^]
8KLKXKT`Z_VKT
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char buchstabe;
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String text = new String("ABC");
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(( merker2.doc
Stand: 22.12.2005 13:39:00 ))
# "
ATUTaT]ich_T]
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public class Deklaration01 { public static void main(String[] args) { String text; //Referenzvariable erzeugen text = new String("Hallo "); // Objekt erzeugen System.out.println(text); // Objektwert ausgeben } } 0SW[ AbO`bS\ RWSaSa >`]U`O[[a USaQVWSVb W[ A^SWQVS` T]ZUS\RSa( 7[ S`abS\ AQV`Wbb eW`R SW\ >ZObh `SaS`dWS`b Tº` RWS @STS`S\hdO`WOPZS cTgc 2WSaS DO`WOPZS Wab d][ Bg^ BcaX]V R V aWS YO\\ OcT SW\ =PXSYb [Wb RS\ /bb`WPcbS\ c\R DS`O`PSW bc\Ua[rUZWQVYSWbS\ RWS W\ RS` 9ZOaaS BcaX]V PSaQV`WSPS\ aW\R dS`eSWaS\ 2c`QV RWS aS 2STW\WbW]\ VOb RWS @STS`S\hdO`WOPZS cTgc OPS` ]^RW ZTX]T] 8]WP[c ES`b 7[ heSWbS\ AQV`Wbb eW`R [Wb RS[ AQVZºaaSZe]`b ]Tf ROa Ab`W\U]PXSYb aSZPab S`hScUb /czS`RS[ PSY][[b ROa =PXSYb SW\S\ /\TO\UaeS`b \É[ZWQV 6OZZ] hcUSeWSaS\ C\R UO\h eWQVbWU RWS A^SWQVS`OR`SaaS RSa =PXSYba eW`R W\ RWS @STS`S\hdO`WOPZS cTgc ºPS`b`OUS\ 2WS T]ZUS\RS U`OTWaQVS 2O`abSZZc\U a]ZZ RWSa dS`RScbZWQVS\(
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(( merker2.doc
Stand: 22.12.2005 13:39:00 ))
# :[PbbT] d]S P]STaT Ch_T] QTbRWaTXQT] STR[PaPcX^]
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(( merker2.doc
Stand: 22.12.2005 13:39:00 ))
# #
B_TiXP[UP[[) ?aX\XcXeT 3PcT]ch_T]
*KQRGXGZOUTSOZVXOSOZO\KT*GZKTZ_VKT 3W\TOQVS DO`WOPZS aW\R YSW\S =PXSYbS) aWS eS`RS\ RW`SYb `STS`S\hWS`b R V RS` dS`SW\ PO`bS 7RS\bWTWS` Wab SW\ >ZObhVOZbS` Tº` RS\ ES`b RS` DO`WOPZS\ 5O\h O\RS`a ROUSUS\ RWS 2SYZO`ObW]\ SW\Sa =PXSYba( 2S` 7RS\bWTWS` Tº` SW\ =PXSYb S\bVÉZb ZSRWUZWQV SW\S /R`SaaS OZa DS`eSWa OcT RWS SWUS\bZWQVS\ =PXSYbTSZRS` BSQV\WaQV OcaUSR`ºQYb( 7\ SW \S[ ;OaQVW\S\PSTSVZ UWPb Sa YSW\S ag[P]ZWaQVS\ `]U`O[[ hSWUb eWS SW\S DO`WOP ZS d][ SW\TOQVS\ Bg^ RSYZO`WS`b c\R RO\OQV ^S` ES`bShceSWac\U [Wb SW\S[ ES`b USTºZZb eW`R ?a^VaP\\ 3TZ[PaPcX^] ") 4X]UPRWT 3PcT]ch_T] STZ[PaXTaT] d]S eTaPaQTXcT] public class Deklaration03 { public static void main(String[] args) { int zahl1; zahl1 = 100; System.out.println(zahl1); } } ;Wb RS` /\eSWac\U int zahl1; eW`R RWS DO`WOPZS iPW[ RSYZO`WS`b 2S` 1][^WZS` `SaS`dWS`b RS\ PS\rbWUbS\ A^SWQVS`^ZObh OPVÉ\UWU d][ 2ObS\bg^ 7\ RWSaS[ 0SWa^WSZ Wab OZa Bg^ X]c O\USUSPS\ RWS /PYº`hc\U Tº` 7\bSUS` S\UZ 5O\hhOVZ 2WS A^`OQV a^ShWTWYObW]\ d]\ 8OdO ZSUb TSab ROaa Tº` RS\ 2ObS\bg^ X]c W[[S` " 0gbSa W[ A^SWQVS` O\USZSUb eS`RS\ C\R RWS W\bS`\S @S^`ÉaS\bObW]\ RS` ES`bS RWSaSa =PXSYba Wab RO[Wb OcQV TSabUSZSUb \É[ZWQV `SW\ PW\É` A][Wb eW`R RWS 2ShW[OZhOVZ W[ /`PSWbaa^SW QVS` eWS T]ZUb RO`USabSZZb ]V\S 0S`ºQYaWQVbWUc\U RSa D]`hSWQVS\a(
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(( merker2.doc
Stand: 22.12.2005 13:39:00 ))
# :[PbbT] d]S P]STaT Ch_T] QTbRWaTXQT] STR[PaPcX^]
2WS SW\USPOcbS\ 2ObS\bg^S\ aW\R ROa 4c\RO[S\b SW\S` >`]U`O[[WS`a^`OQVS 2Sa eSUS\ eS`RS\ eW` PSd]` eW` c\a W\ RS\ \OQVT]ZUS\RS\ 9O^WbSZ\ [Wb aSZPab RSTW \WS`bS\ 2ObS\bg^S\ OZa] [Wb RS\ 9ZOaaS\ PSTOaaS\ hc\ÉQVab RWS OQVb 0OaWaRObS\bg ^S\ PSa^`SQVS\ 0SW RS` 2SYZO`ObW]\ SW\S` SW\TOQVS\ DO`WOPZS\ eW`R RS` A^SWQVS`^ZObh Tº` SW\S\ [rU ZWQVS\ ES`b UZSWQV `SaS`dWS`b 0SW RS` 2SYZO`ObW]\ SW\S` @STS`S\hdO`WOPZS\ ROUSUS\ eW`R ZSRWUZWQV RS` >ZObh Tº` RWS /R`SaaS `SaS`dWS`b RO\OQV Wab SW\ heSWbS` AQV`Wbb RWS 7\abO\hWWS`c\U [Wb ]Tf S`T]`RS`ZWQV RO[Wb SW\ =PXSYb S\babSVb 6WS`hc SW\ 6W\eSWa( 7\ SW\WUS\ O\RS`S\ >`]U`O[[WS`a^`OQVS\ eW`R heWaQVS\ 2SYZO`ObW]\ c\R 2STW\WbW]\ ab`S\U c\bS`aQVWSRS\ /Za 2SYZO`ObW]\ eW`R RS` D]`UO\U PShSWQV\Sb RS` SW\S\ \ScS\ 0ShSWQV\S` h 0 Tº` SW\S DO`WOPZS PSYO\\b [OQVb c\R c\bS` 2STW\WbW]\ eW`R RO\\ \WQVb \c` RWS 2SYZO`ObW]\ a]\RS`\ OcQV RWS A^SWQVS`OZZ]YObW]\ Tº` RWS DO`WOPZS dS` abO\RS\ 8OdO c\bS`aQVSWRSb \WQVb heWaQVS\ RWSaS\ PSWRS\ 0SU`WTTS\ /cT RS\ \ÉQVabS\ ASWbS\ eW`R XSRS` 2ObS\bg^ RSbOWZZWS`b PSa^`]QVS\ 2WS 0SWa^WSZ^`] U`O[[S VOPS\ W[[S` RS\ UZSWQVS\ /cTPOc 2O[Wb AWS SW\ DS`abÉ\R\Wa Tº` RWS Ab`cY bc` c\R RWS eWQVbWUabS\ A^`OQVSZS[S\bS RWSaS` W[[S` UZSWQV OcTUSPOcbS\ >`]U`O[[S PSY][[S\ S`ZÉcbS`\ eW` hc\ÉQVab SW\ ;cabS`^`]U`O[[ ?a^VaP\\ Ch_T] ) 4X] ch_XbRWTb 43E?a^VaP\\ bXTWc X] 9PeP b^ Pdb)
import java.util.Scanner; public class Typen01 { public static void main(String[] args) { Scanner eingabe = new Scanner(System.in); int zahl; zahl = eingabe.nextInt(); zahl = zahl + 50; System.out.println("Ergebnis ist: " + zahl); } } 2Oa >`]U`O[[ VOb RWS bg^WaQVS Ab`cYbc` dWSZS` 32D>`]U`O[[S( 3W\UOPS DS`O`PSW bc\U /caUOPS Hc\ÉQVab eS`RS\ RWS PS\rbWUbS\ @Saa]c`QS\ PSYO\\b US[OQVb RS YZO`WS`b RO\\ eS`RS\ 2ObS\ TX]VT[TbT] W[ /`PSWbaa^SWQVS` eTaPaQTXcTc c\R RWS 3`USP\WaaS PdbVTVTQT] 2O[Wb ROa 0SWa^WSZ^`]U`O[[ \WQVb hc c[TO\U`SWQV eW`R S\bVÉZb Sa YSW\S`ZSW >`ºTc\US\ OcQV YSW\S 4]`[OZ^`ºTc\US\ RWS aWQVS`abSZZS\ ROaa RS` 0SRWS\S` OcQV eW`YZWQV \c` 2ObS\ RSa UST]`RS`bS\ Bg^a SW\USPS\ YO\\ 2WSaS T]`[OZS >`ºTc\U a]ZZbS aSZPabdS`abÉ\RZWQV W\ SW\S[ ^`OfWa`SZSdO\bS\ >`]U`O[[ d]` VO\RS\ aSW\ 7[ 3W\hSZ\S\ S\bVÉZb ROa >`]U`O[[ T]ZUS\RS /\eSWac\US\( •
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#
(( merker2.doc
Stand: 22.12.2005 13:39:00 ))
# #
B_TiXP[UP[[) ?aX\XcXeT 3PcT]ch_T]
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2STW\WbW]\ RSa 3W\UOPSUS`Éba( Scanner eingabe = new Scanner(System.in);
2STW\WbW]\ RSa A^SWQVS`^ZObhSa Tº` SW\S DO`WOPZS( int zahl;
3W\ZSaS\ SW\Sa ES`bSa d][ RSTW\WS`bS\ 3W\UOPSUS`Éb( zahl = eingabe.nextInt();
DS`É\RS`c\U RSa DO`WOPZS\W\VOZba Rc`QV /RRWbW]\( zahl = zahl + 50;
/caUOPS RSa 3`USP\WaeS`bSa( System.out.println("Ergebnis ist: " + zahl);
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(( merker2.doc
Stand: 22.12.2005 13:39:00 ))
# :[PbbT] d]S P]STaT Ch_T] QTbRWaTXQT] STR[PaPcX^]
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# # ! 3Ta 3PcT]ch_ X]c 2S` eWQVbWUabS 5O\hhOVZS\bg^ Wab X]c ROa Wab RWS /PYº`hc\U Tº` 7\bSUS` S\UZ UO\hS HOVZ 2O[Wb eW`R TSabUSZSUb ROaa RWSaS` A^SWQVS`^ZObh ]da Tº` RWS A^SWQVS`c\U d]\ UO\hS\ HOVZS\ US\cbhb eS`RS\ YO\\ ROaa ROTº` W[[S` " 0gbSa W[ /`PSWbaa^SWQVS` hc` DS`TºUc\U abSVS\ c\OPVÉ\UWU d]\ RS` >ZObbT]`[ c\R d]\ RS` ;OaQVW\S\O`QVW bSYbc` c\R ROaa RWS ! PWba `SW\ PW\É` [Wb RS` AbSZZS\eS`bWUYSWb d]\ S` >]bS\hS\ W\bS`^`SbWS`b eS`RS\ ESWbS`VW\ Wab Rc`QV RS\ 2ObS\bg^ TSabZSUb eSZQVS =^S`ObW]\S\ [Wb RWSaS` DO`WOPZS\ S`ZOcPb aW\R h 0 `SQV\S\ OPS` YSW\ Y]\YObS\WS`S\ ?a^VaP\\ 8]cTVTa ) 0aQTXcT] \Xc ST\ 3PcT]ch_ X]c import java.util.Scanner; public class Integer01 { public static void main(String[] args) { Scanner eingabe = new Scanner(System.in); int zahl; // Deklaration zahl = eingabe.nextInt(); // Einlesen System.out.println("Eingelesen wurde: " + zahl); } } #"
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Stand: 22.12.2005 13:39:00 ))
# #
B_TiXP[UP[[) ?aX\XcXeT 3PcT]ch_T]
ÎQd]VT] id\ ?a^VaP\\ 8]cTVTa ÎQd]V ( 0WbbS bSabS\ AWS ROa >`]U`O[[ W\RS[ AWS hc\ÉQVab SW\S\ PSZWSPWUS\ 7\bS US`eS`b SW\USPS\ 2O\\ Wab OZZSa W\ =`R\c\U ÎQd]V !( BSabS\ AWS RO\OQV [Wb SW\S[ \WQVb\c[S`WaQVS\ ES`b h 0 [Wb 0cQVabO PS\ ]RS` [Wb SW\S[ USP`]QVS\S\ /\bSWZ S\beSRS` W\ O[S`WYO\WaQVS` AQV`SWPeSWaS PSW RS` O\abSZZS RSa 9][[O SW\ >c\Yb SW\USbW^^b eW`R h 0 # ]RS` OcQV RWS RScbaQVS AQV`SWPeSWaS 2O\\ S`hScUb RWS 8D; SW\S\ :OcThSWbTSVZS` 3fQS^bW]\ ÎQd]V ") BSabS\ AWS XSbhb ROa >`]U`O[[ W\RS[ AWS SW\S \SUObWdS 5O\hhOVZ SW\US PS\ /QVbc\U( ROa D]`hSWQVS\ [caa d]` RS` HOVZ abSVS\ OZa] h 0 #
# # ! ! 3Ta 3PcT]ch_ QhcT
2Oa \ÉQVabS >`]U`O[[ S`eO`bSb d][ 0SRWS\S` ES`bS d][ 2ObS\bg^ QhcT 2WSa Wab SPS\TOZZa SW\ \c[S`WaQVS` 2ObS\bg^ EWS RWS BOPSZZS " hSWUb Wab RS` VrQVabS ES`b W\ SW\S` 0gbSDO`WOPZS\ % 3`ZÉcbS`c\U( 3W\S QhcTDO`WOPZS S\bVÉZb W[[S` SW\ D]` hSWQVS\PWb RSaeSUS\ abSVS\ Tº` RWS HOVZ aSZPab \c` % PWba hc` DS`TºUc\U 2Oa UWPb & ;rUZWQVYSWbS\ PSUW\\S\R [Wb RS` 2ShW[OZhOVZ [OfW[OZ RO\\ % ^]aWbWd ]RS` [W\W[OZ % \SUObWd ?a^VaP\\ 1hcT ) 0aQTXcT] \Xc ST\ 3PcT]ch_ QhcT import java.util.Scanner; public class Byte01 { public static void main(String[] args) { Scanner eingabe = new Scanner(System.in); byte zahl; // Deklaration zahl = eingabe.nextByte(); // Eingabe System.out.println("Eingegeben wurde: " + zahl); } } ÎQd]V id\ ?a^VaP\\ 1hcT ÎQd]V ( BSabS\ AWS ROa >`]U`O[[ hc\ÉQVab [Wb SW\S` Y]``SYbS\ \c[S`WaQVS\ 3W\ UOPS h 0 & c\R RO\OQV [Wb SW\S[ ES`b RS` OczS`VOZP RSa ES`bSPS`SWQVa SW\S` QhcTDO`WOPZS\ ZWSUb h 0 & ]RS` SW\S[ \WQVb\c[S`WaQVS\ ES`b ÎQd]V !( 3`ZOcPb RWSaS` 2ObS\bg^ RWS 3W\UOPS SW\S` \SUObWdS\ HOVZ h 0 #- ÎQd]V "( DS`acQVS\ AWS aSZPababÉ\RWU SW\S\ [^]V2ObS\bg^ hc PS\cbhS\ :rac\Ua VW\eSWaS( 2Ohc Wab W\ HSWZS # RS` 2ObS\bg^ OcT [^]V hc É\RS`\ c\R W\ RS` HSWZS $ ZOcbSb RS` :SaSPSTSVZ(
zahl = eingabe.nextLong();
##
(( merker2.doc
Stand: 22.12.2005 13:39:00 ))
# :[PbbT] d]S P]STaT Ch_T] QTbRWaTXQT] STR[PaPcX^]
*OK*GZKTZ_VKTLXJOK-RKOZQUSSG@GNRKTLRUGZOTMVUOTZ HOVZS\ [Wb
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! #
+ ;O\bWaaS # 3f^]\S\b + ! # ;O\bWaaS ! 3f^]\S\b + ;O\bWaaS " 3f^]\S\b
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S% + 3% +
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!%#'3 !%#' 3! !%#'S
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#$
(( merker2.doc
Stand: 22.12.2005 13:39:00 ))
# #
B_TiXP[UP[[) ?aX\XcXeT 3PcT]ch_T]
8OdO YS\\b heSW c\bS`aQVWSRZWQVS 5ZSWbY][[OBg^S\ U[^Pc c\R S^dQ[T AWS c\bS` aQVSWRS\ aWQV W\ RS` /\hOVZ A^SWQVS`abSZZS\ RWS hc` DS`TºUc\U abSVS\( •
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•
S^dQ[T VOb R]^^SZb a] dWSZS \É[ZWQV $" PWba ROd]\ " aWU\WTWYO\bS 2ShW[OZabSZ ZS\
2Oa T]ZUS\RS >`]U`O[[ a^SWQVS`b RS\ 3W\UOPSeS`b W\ SW\S` DO`WOPZS\ d][ 2ObS\bg^ S^dQ[T 2O[Wb Wab Sa Tº` RWSaS DO`WOPZS W\ RS` :OUS USP`]QVS\S HOVZS\ [Wb 9][[O abSZZS\ hc ZSaS\ c\R hc dS`O`PSWbS\ ?a^VaP\\ 3^dQ[T ) 0aQTXcT] \Xc ST\ 3PcT]ch_ S^dQ[T import java.util.Scanner; public class Double01 { public static void main(String[] args) { Scanner eingabe = new Scanner(System.in); double zahl; // Deklaration zahl = eingabe.nextDouble(); // Einlesen System.out.println("Eingegeben wurde: " + zahl); } } ÎQd]VT] id\ ?a^VaP\\ 3^dQ[T
ÎQd]V ) 4º` RWS 3W\UOPS d]\ 5ZSWbY][[OhOVZS\ UWPb Sa [SV`S`S ;rUZWQVYSWbS\( S\beSRS` eW`R RWS AbO\RO`RRO`abSZZc\U USeÉVZb h 0 #!" ]RS` Sa eW`R RWS eWaaS\ aQVOTbZWQVS <]bObW]\ dS`eS\RSb h 0 %3# 0WbbS bSabS\ AWS PSWRS DO`WO\bS\ /QVbc\U( 2Oa >`]U`O[[ Wab O\US^Oaab O\ RWS RScbaQVS AQV`SWPeSWaS R V Sa eW`R SW\ 9][[O S`eO`bSb c\R YSW\ 2ShW[OZ^c\Yb ÎQd]V !) Ò\RS`\ AWS W[ ?cSZZbSfb RS\ 2ObS\bg^ RS` DO`WOPZS\ iPW[ W\ U[^Pc :r ac\UaVW\eSWa( 2S\YS\ AWS RO`O\ ROaa aWQV OcQV RS` ;SbV]RS\\O[S É\RS`b d]\ ]Tgc3^dQ[T OcT ]Tgc5[^Pc BSabS\ AWS ROa >`]U`O[[ [Wb RS\ T]ZUS\RS\ dWS` 5ZSWb Y][[OhOVZS\( #3 ! S ! 3& 2WS 5ZSWbY][[O2O`abSZZc\U VOb \SPS\ RS[ D]`bSWZ RS` Y][^OYbS\ 2O`abSZZc\U Rc`QV 0SaSWbWUc\U d]\ ºPS`TZºaaWUS\ `]hSaa]`S\ aQV\SZZS` RO[Wb O`PSWbS\ Yr\\S\ OZa [Wb PW\É`S\ 5O\hhOVZS\ ]RS` [Wb PW\É` Q]RWS`bS\ 2ShW[OZhOVZS\ RWSaS a] US\O\\bS\ 012HOVZS\ eS`RS\ eW` a^ÉbS` US\OcS` PSVO\RSZ\ /PS` /QVbc\U( 2c`QV RS\ ESQVaSZ RSa AbSZZS\eS`bagabS[a d][ HSV\S``SQV\S\ hc` HeSWS`RO`abSZZc\U Yr\\S\ aWQV C\US\OcWUYSWbS\ S`USPS\ 2S` 5`c\R Wab RWS PS U`S\hbS AbSZZS\O\hOVZ RWS Tº` 0`cQVhOVZS\ hc` DS`TºUc\U abSVb HeO` Wab ROa 0W\É` agabS[ \WQVb [SV` ]RS` eS\WUS` US\Oc OZa ROa 2ShW[OZagabS[ OPS` Sa S\ba^`WQVb SPS\ \WQVb c\aS`S` 2S\YeSWaS 7[ 9O^WbSZ % UWPb Sa ROhc eSWbS`S 6W\eSWaS #%
(( merker2.doc
Stand: 22.12.2005 13:39:00 ))
# :[PbbT] d]S P]STaT Ch_T] QTbRWaTXQT] STR[PaPcX^]
*KX*GZKTZ_VHUURKGT 3W\S /caaOUS YO\\ eOV` ]RS` TOZaQV aSW\ C[ SW\S\ RWSaS` PSWRS\ EOV`VSWbaeS`bS a^SWQVS`\ hc Yr\\S\ Wab W\ 8OdO RS` 2ObS\bg^ Q^^[TP] SW\USPOcb 2WSaS` Bg^ YS\\b OZa] \c` RWSaS PSWRS\ ES`bS RWSa Wab aSW\ ES`bSPS`SWQV 2WS PSWRS\ [rUZWQVS\ EOV`VSWbaeS`bS eS`RS\ UP[bT c\R cadT US\O\\b ?a^VaP\\ 1^^[TP] ) 0aQTXcT] \Xc ST\ 3PcT]ch_ Q^^[TP] public class Boolean01 { public static void main (String args[]) { boolean aussage = false; System.out.println("Aussage ist: " + aussage); System.out.println("d.h. sie ist nicht: " + !aussage); } } 2Oa >`]U`O[[ 1^^[TP] YPeP S`hScUb SW\S 0]]ZSaQVS DO`WOPZS c\R W\WbWOZWaWS`b aWS [Wb RS[ /\TO\UaeS`b UP[bT 2WSaS` eW`R W[ S`abS\ /caUOPSPSTSVZ c\dS`É\RS`b OcaUS USPS\ W[ heSWbS\ _aX]c[]/cT`cT XSR]QV eW`R RS` EOV`VSWbaeS`b Rc`QV DS`eS\Rc\U RSa /ca`cTShSWQVS\ c[USYSV`b Oca UP[bT eW`R cadT ?a^VaP\\ 1^^[TP] !) 4X][TbT] TX]Tb FPWaWTXcbfTacTb
import java.io.*; import java.util.Scanner; public class Boolean02 { public static void main(String[] args) { Scanner eingabe = new Scanner(System.in); boolean wahr; wahr = eingabe.nextBoolean(); // Eingabe System.out.println("Ergebnis ist: " + wahr); // Ausgabe } } ÎQd]V id\ ?a^VaP\\ 1^^[TP] ! BSabS\ RWS ROa >`]U`O[[ W\RS[ AWS XSeSWZa SW\[OZ T]ZUS\RS ES`bS SW\USPS\( b`cS TOZaS c\R B@C3 c\R 4O:aS ;O\ aOUb cadT c\R UP[bT aW\R SW\USPOcbS :WbS`OZS c\R aWS [ºaaS\ SfOYb a] USaQV`WS PS\ eS`RS\ /PS`( RWS 5`]z ]RS` 9ZSW\aQV`SWPc\U a^WSZb Pdb]PW\bfTXbT YSW\S @]ZZS RS\\ RWS ;SbV]RS ]Tgc1^^[TP] Wab a] USaQV`WSPS\ ROaa aWS RS\ SW\USUSPS \S\ Ab`W\U Ocb][ObWaQV W\ 9ZSW\PcQVabOPS\ c[eO\RSZb 3W\USaSbhb eW`R RS` Q^^[TP]2ObS\bg^ Tº` RWS A^SWQVS`c\U d]\ HcabÉ\RS\ h 0 \OQV DS`UZSWQVS\ 0]]ZSaQVS DO`WOPZS\ Yr\\S\ a] OZa AQVOZbS` RWS\S\ Tº` ROa 4SabVOZbS\ d]\ DS`UZSWQVaS`USP\WaaS\ d]\ RS\S\ RO\\ eSWbS`S /PZÉcTS OPVÉ\UWU US[OQVb eS` RS\ 2WS AbScS`PSTSVZS aWSVS 9O^WbSZ & O`PSWbS\ OZZS [Wb P]]ZSaQVS\ ES`bS\ #&
(( merker2.doc
Stand: 22.12.2005 13:39:00 ))
# #
B_TiXP[UP[[) ?aX\XcXeT 3PcT]ch_T]
*KX*GZKTZ_VINGX 2S` HSWQVS\bg^ RWPa Wab RS` SW\hWUS ^`W[WbWdS 2ObS\bg^ RS` [Wb SW\S` dS`SW\PO`bS\ 1]RWS`c\UabOPSZZS O`PSWbSb R V eÉV`S\R RWS 0WbY][PW\ObW]\S\ W\ RS\ dWS` 5O\hhOV ZS\bg^S\ OZa 2ShW[OZhOVZS\ W\bS`^`SbWS`b eS`RS\ eW`R RS` 7\VOZb SW\S` RWPa DO`WOPZS\ OZa SW\ SW\hSZ\Sa HSWQVS\ W\bS`^`SbWS`b 7\ 8OdO eW`R W\bS`\ Tº` XSRSa HSW QVS\ Oca RS[ C\WQ]RS RWS dS`SW\PO`bS >ZObh\c[[S` Q]RS^]W\b USa^SWQVS`b eS\\ RS` 2ObS\bg^ RWPa dS`SW\PO`b eW`R 7[ C\WQ]RS Wab Tº` XSRSa HSWQVS\ RWS 1]RWS`c\U TSabUSZSUb O\RS`a OZa PSW HOVZS\ e] \WQVb RWS HWTTS`\hSWQVS\ SW\hSZ\ dS`aQVZºaaSZb eS`RS\ a]\RS`\ e] RS` HOVZS\eS`b OZa 5O\hSa c[US`SQV\Sb eW`R W\ SW\S 2cOZhOVZ [Wb RS` AbSZZS\eS`bWUYSWb 4º` XSRSa HSWQVS\ eS`RS\ W\ 8OdO heSW 0gbSa PSZSUb D]`hSWQVS\ UWPb Sa PSW[ 2ObS\ bg^ RWPa \WQVb 2O[Wb ZWSUb RS` VSfORShW[OZS ES`bSPS`SWQV RSa 2ObS\bg^a RWPa heW aQVS\ Jc \WSR`WUabS` ES`b c\R Jc4444 VrQVabS` ES`b 2WS RW`SYbS 3W\UOPS SW\Sa C\WQ]RShSWQVS\a Wab ºPS` RWS BOabObc` BhbcT\ X] \WQVb a] ]V\S eSWbS`Sa [rUZWQV RS\\ e] UWPb Sa BOabObc`S\ [Wb SW\WUS\ BOcaS\R C\WQ]RS hSWQVS\- 2SaVOZP VOPS\ RWS 8OdO3\beWQYZS` S\baQVWSRS\ ROaa SW\S[ >`]U`O[[ hc \ÉQVab \c` RS` \c[S`WaQVS ES`b RSa HSWQVS\a ºPS`USPS\ eW`R eS\\ Sa d]\ RS` BOabObc` ZWSab 9]\Y`Sb eW`R RS[ >`]U`O[[ RS` 1]RS^]W\b Oca RS` C\WQ]RSBOPSZZS USZWSTS`b 2WSaS` ES`b [caa hc\ÉQVab W\ SW\S` X]cDO`WOPZS\ S[^TO\US\ eS`RS\ c\R YO\\ RO\\ XS \OQV 0SRO`T W\bS`^`SbWS`b eS`RS\ 2WSaS D]`USVS\aeSWaS UWZb OcQV Tº` VS`Yr[[ZWQVS /A177HSWQVS\ RWS W[ C\WQ]RS OZa C\bS`[S\US S\bVOZbS\ aW\R ?a^VaP\\ 2WPaPRcTa ) 0aQTXcT] \Xc ST\ 3PcT]ch_ RWPa public class Character01 { public static void main(String[] args) throws Exception { int z; z = System.in.read(); // Liefert den Codepoint char c = (char)z; // Interpretation als (Unicode-)Zeichen System.out.println("Ergebnis ist: " + c); } }
ÎQd]V id\ ?a^VaP\\ 2WPaPRcTa BSabS\ AWS ROa >`]U`O[[ W\RS[ AWS SW\ PSZWSPWUSa HSWQVS\ RSa /A1771]RSa h 0 RS\ 0cQVabOPS\ / ]RS` O ^S` BOabObc` SW\USPS\ ÍPS`^`ºTS\ AWS eWS ROa >`]U`O[[ `SOUWS`b eS\\ AWS SW\ HSWQVS\ RSa S`eSWbS`bS\ /A1771]RS h 0 SW\S\ RScbaQVS\ C[ZOcb SW\USPS\ =TTS\aWQVbZWQV Wab RWSa \WQVb a] ]V\S eSWbS`Sa [rUZWQV AWS eS`RS\ W[ 9O^WbSZ $ :rac\US\ Tº` RWSaSa >`]PZS[ YS\\S\ ZS`\S\ 2S` 9]^T RS` ;SbV]RS S\bVÉZb RWS 9ZOcaSZ cWa^fb 4gRT_cX^] 2O[Wb eW`R R]Yc [S\bWS`b ROaa W\\S`VOZP RS` ;SbV]RS SW\ :OcThSWbTSVZS` 3fQS^bW]\ OcTb`SbS\ YO\\ RS` \WQVb OPUSTO\US\ c\R a^ShWSZZ PSVO\RSZb eW`R a]\RS`\ c\PSVO\RSZb Rc`QVUS #'
(( merker2.doc
Stand: 22.12.2005 13:39:00 ))
# :[PbbT] d]S P]STaT Ch_T] QTbRWaTXQT] STR[PaPcX^]
`SWQVb eW`R O\ RS\ /cT`cTS` RWSaS` ;SbV]RS 2O Sa aWQV W\ RWSaS[ 4OZZ c[ RWS \PX] ;SbV]RS VO\RSZb eW`R SW\ SdS\bcSZZ OcTb`SbS\RS` :OcThSWbTSVZS` d]\ RS` 8D; PSO` PSWbSb \]`[OZS`eSWaS PSRScbSb RWSa >`]U`O[[OPP`cQV ES\\ RWS 9ZOcaSZ TSVZb TºV`b ROa hc T]ZUS\RS[ C[eO\RZc\UaTSVZS`( ...unreported exception java.io.IOException; must be caught or declared to be thrown... /cT RS` 0OaWa d]\ SW\hSZ\S\ HSWQVS\ RWPaBg^ Yr\\S\ eSWbS`S BSfbbg^S\ USPWZRSb eS`RS\ A] UWPb Sa W\ 8OdO RWS 9ZOaaS\ BcaX]V c\R BcaX]V1dUUTa RWS SW\ Y][T]`bOPZSa /`PSWbS\ [Wb HSWQVS\YSbbS\ ab`W\Ua S`[rUZWQVS\
=XGVVKX1RGYYKT 7\ 8OdO UWPb Sa Tº` XSRS\ ^`W[WbWdS\ 2ObS\bg^ SW\S Y]``Sa^]\RWS`S\RS 9ZOaaS OZa] Tº` RS\ Bg^ RWPa RWS 9ZOaaS 2WPaPRcTa Tº` RS\ Bg^ QhcT RWS 9ZOaaS 1hcT cae 2WS 9ZOa aS\ eS`RS\ E`O^^S`9ZOaaS\ US\O\\b AWS Yr\\S\ O\abSZZS RS` SW\TOQVS\ 2ObS\bg ^S\ PS\cbhb eS`RS\ <]beS\RWU YO\\ RS` 3W\aObh d]\ E`O^^S`9ZOaaS\ aSW\ eS\\ =PXSYbdO`WOPZS PS\r bWUb eS`RS\ OZa] SW\TOQVS 2ObS\bg^S\ \WQVb S`ZOcPb aW\R h 0 PSW ;SbV]RS\OcT`cTS\ ]RS` eS\\ hcaÉbhZWQVS DS`O`PSWbc\Ua[rUZWQVYSWbS\ US\cbhb eS`RS\ a]ZZS\ ?a^VaP\\ FaP__Ta ) 4X]T] 8]cTVTafTac P[b >QYTZc TaiTdVT] public class Wrapper01 { public static void main (String[] args) Integer zahl = new Integer(25); System.out.println(zahl + 3); } }
{
2Oa >`]U`O[[ FaP__Ta ! hSWUb eWS [Wb 6WZTS SW\S` ;SbV]RS RS` E`O^^S`9ZOaaS 2WPaPRcTa OPUST`OUb eS`RS\ YO\\ ]P Sa aWQV PSW SW\S[ HSWQVS\ c[ SW\S\ 5`]z PcQVabOPS\ VO\RSZb ?a^VaP\\ FaP__Ta !)
public class Wrapper02 { public static void main(String[] args) { char zeichen1 = 65; if (Character.isUpperCase(zeichen1)) System.out.println("Es ist ein Großbuchstabe"); } }
$
(( merker2.doc
Stand: 22.12.2005 13:39:00 ))
# $
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.
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int zahl; String text;
// primitiver Datentyp // Referenz-Datentyp
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$
(( merker2.doc
Stand: 22.12.2005 13:39:00 ))
# :[PbbT] d]S P]STaT Ch_T] QTbRWaTXQT] STR[PaPcX^]
•
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$
(( merker2.doc
Stand: 22.12.2005 13:39:00 ))
$
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(( merker2.doc
Stand: 22.12.2005 13:39:00 ))
$ A0< eTafP[cT]) EPaXPQ[T d]S >QYTZcT TaiTdVT]
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double gehalt;
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(( merker2.doc
Stand: 22.12.2005 13:39:00 ))
$ !
?aX\XcXeT EPaXPQ[T]
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{
ÎQd]VT] id\ ?a^VaP\\ EPaXPQ[T] ÎQd]V ( EO\RSZ\ AWS ROa >`]U`O[[ c[ c\R TºV`S\ AWS Sa Oca 4]`[OZ Wab OZZSa W\ =`R\c\U OPS` Sa ^OaaWS`b \Obº`ZWQV \WQVba Ò\RS`\ AWS ROa >`]U`O[[ a] ROaa RS` ES`b RS` DO`WOPZS\ VTWP[c OcT BhbcT\ ^dc OcaUSUSPS\ eW`R c\R dS`acQVS\ AWS ROa >`]U`O[[ c[hceO\RSZ\ 2WS 4SVZS`[SZRc\U ZOcbSb aW\\US[Éz( 2WS DO`WOPZS Wab \WQVb W\WbWOZWaWS`b ÎQd]V !) Ò\RS`\ AWS OZa] ROa >`]U`O[[ S`\Scb W\RS[ AWS 7V` Ec\aQVUSVOZb OZa 7\WbWOZES`b W\ RWS DO`WOPZS aQV`SWPS\ =P\T] XST]cXUXTa U¶a EPaXPQ[T] 2WS `]U`O[[WS`S` T`SW eÉVZPO` /caUSaQVZ]aaS\ aW\R OZZS`RW\Ua RWS AQVZºaaSZer`bS` RS` A^`OQVS RS\\ RWSaS VOPS\ SW\S TSabUSZSUbS 0SRScbc\U 2WS :É\US Wab PSZWSPWU OZa HSWQVS\ Wab TOab XSRSa C\WQ]RShSWQVS\ S`ZOcPb \c` RWS S`abS AbSZZS [caa SW\ 0cQVabOPS aSW\ 3[^TSVZc\US\ Tº` RWS `]PZS[S PSW[ /\hSWUS\ ]RS` /caR`cQYS\ RSa ?cSZZbSfba UWPb a]ZZbS\ RWS 0ShSWQV\S` YSW\S HSWQVS\ OczS`VOZP RSa `SW\S\ /A1771]RSa S\bVOZbS\ /cQV RScbaQVS C[ZOcbS aW\R hc dS`[SWRS\ /PVÉ\UWU d]\ RS` >]aWbW]\ e] SW\S DO`WOPZS RSYZO`WS`b Wab c\bS`aQVSWRSb [O\ \]QV RWS AQ]^S 2Oa Wab RWS AWQVbPO`YSWb RS` 2SYZO`ObW]\ R V aWS PSaQV`SWPb e] RWS DO `WOPZS US\cbhb eS`RS\ YO\\ c\R e] \WQVb 2WSa Wab SW\ BVS[O ROa W[ 9O^WbSZ $ S` ZÉcbS`b eW`R $#
(( merker2.doc
Stand: 22.12.2005 13:39:00 ))
$ A0< eTafP[cT]) EPaXPQ[T d]S >QYTZcT TaiTdVT]
=KXZK`[]KOY[TMGT`]U`O[[WS`S` SW\S\ 7\WbWOZeS`b PSY][[S\ PSd]` aWS US\cbhb eS`RS\ Yr\\S\ DO`WOPZS\ RWS ;WbUZWSRS` SW\S` 9ZOa aS aW\R eS`RS\ OczS`VOZP d]\ ;SbV]RS\ RSYZO`WS`b c\R RWSaS DO`WOPZS\ eS`RS\ Ocb][ObWaQV W\WbWOZWaWS`b 2Ohc W\ a^ÉbS`S\ 9O^WbSZ\ [SV` 7[ >`]U`O[[ EPaXPQ[T] aW\R OZZS R`SW DO`WOPZS\ Z]YOZ 2SaVOZP [ºaaS\ aWS Sf^ZW hWb SW\S\ ES`b OZa /\TO\UaeS`b PSY][[S\ 2Oa YO\\ S`T]ZUS\ •
S\beSRS` PS`SWba PSW RS` 2SYZO`ObW]\ W\RS[ ROa 5ZSWQVVSWbahSWQVS\ c\R ROVW\ bS` RS` USeº\aQVbS 7\WbWOZeS`b SW\USb`OUS\ eS`RS\
•
]RS` a^ÉbS` hc` :OcThSWb RSa >`]U`O[[a Rc`QV SW\S HceSWac\U [Wb RS` SW\ ES`b W\ RWS DO`WOPZS USaQV`WSPS\ eW`R
?a^VaP\\ EPaXPQ[T] !) 8]XcXP[XbXTaT] e^] [^ZP[T] EPaXPQ[T] public class Variablen02 { public static void main(String[] args) char zeichen = 'x'; double gehalt = 2000.00; boolean vorhanden= true; System.out.println(vorhanden); } }
{
ÎQd]V id\ ?a^VaP\\ EPaXPQ[T] ! Ò\RS`\ AWS ROa >`]U`O[[ eWS T]ZUb( 4ºV`S\ AWS ZTX]T 7\WbWOZWaWS`c\U PSW RS` 2SYZO `ObW]\ Oca a]\RS`\ Q]RWS`S\ AWS abObbRSaaS\ SW\S ES`bShceSWac\U 2WS /caUOPS RSa >`]U`O[[a dS`É\RS`b aWQV RORc`QV \WQVb a]\RS`\ \c` ROa DS`VOZ bS\( XSbhb eW`R RS` ES`b \WQVb PS`SWba hc` C[eO\RZc\UahSWb SW\USb`OUS\ a]\RS`\ S`ab hc` :OcThSWb 0SW XSRS` ES`bShceSWac\U ºPS`^`ºTb RS` 1][^WZS` ]P RS` USaS\RSbS ES`b Y][^ObWPSZ Wab hc RS[ 2ObS\bg^ RS` 3[^TÉ\US`dO`WOPZS\ HceSWac\UaY][^O bWPWZWbÉb $$
(( merker2.doc
Stand: 22.12.2005 13:39:00 ))
$ !
?aX\XcXeT EPaXPQ[T]
;»bd]Vbe^abRW[PV) ?a^VaP\\ EPaXPQ[T] ") FTacTidfTXbd]V P] EPaXPQ[T] public class Variablen03 { public static void main(String[] args) char zeichen; double gehalt; boolean vorhanden; zeichen = 'x'; gehalt = 2000; vorhanden = true; System.out.println(vorhanden); } }
{
2S` DO`WOPZS\\O[S abSVb Tº` RS\ ES`b RS` DO`WOPZS\ 2Oa VSWzb eS\\ W\ SW\S[ 0S TSVZ RS`
Aystem.out.println(vorhanden);
2c`QV RWSaS /\eSWac\U eW`R RS` OYbcSZZS 7\VOZb RSa A^SWQVS`PS`SWQVa [Wb RS[ 7RS\ bWTWS` e^aWP]ST] S`[WbbSZb c\R OcT RS` AbO\RO`ROcaUOPSSW\VSWb OcaUSUSPS\ ;O\ aOUb RS` /caR`cQY e^aWP]ST] eW`R OcaUSeS`bSb SdOZcWS`b c\R [Wb RS[ 3`USP\Wa eW`R RO\\ RWS USeº\aQVbS =^S`ObW]\ VWS`( _aX]c[] OcaUSTºV`b 2Oa T]ZUS\RS >`]U`O[[ CPdbRWT] a]ZZ RS\ 7\VOZb RWS ES`bS RS` DO`WOPZS\ i c\R i! bOcaQVS\ c\R RO\OQV O[ 0WZRaQVW`[ OcaUSUSPS\ ?a^VaP\\ CPdbRWT] ) CPdbRWT] STa FTacT e^] ! EPaXPQ[T] import java.util.Scanner; public class Tauschen01 { public static void main(String[] args) { Scanner eingabe = new Scanner(System.in); int z1; int z2; System.out.println("Bitte 2 Zahlen eingeben"); z1 = eingabe.nextInt(); z2 = eingabe.nextInt(); System.out.println("Zahl1 = " + z1 + " Zahl2 = " + z2); int hilfsvariable = z1; z1 = z2; z2 = hilfsvariable; System.out.println("Zahl1 = " + z1 + " Zahl2 = " + z2); } } $%
(( merker2.doc
Stand: 22.12.2005 13:39:00 ))
$ A0< eTafP[cT]) EPaXPQ[T d]S >QYTZcT TaiTdVT]
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8KLKXKT`\GXOGHRKT
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String text;
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(( merker2.doc
Stand: 22.12.2005 13:39:00 ))
$ "
ATUTaT]iePaXPQ[T]
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text = new String("Merker");
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public class String02 { public static void main(String[] args) String str1 = new String("Java"); String str2 = new String("buch"); String ergebnis; ergebnis = str1.concat(str2); System.out.println(ergebnis); } }
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String str1 = new String("Java"); $'
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Stand: 22.12.2005 13:39:00 ))
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String str1; str1 = new String("Java");
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String text = "Hallo";
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String text; ... text = "Hallo";
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import java.awt.*; class Point01 { %
(( merker2.doc
Stand: 22.12.2005 13:39:00 ))
$ "
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public static void main(String[] args) { Point p; p = new Point(5,3); System.out.println(p.toString()); } } 2Oa >`]U`O[[ ?^X]c RSTW\WS`b RWS @STS`S\hdO`WOPZS ^ S`hScUb [Wb ]Tf SW\ =PXSYb d][ Bg^ ?^X]c [Wb RS\ ES`bS\ # c\R ! c\R `cTb O\aQVZWSzS\R RWS ;SbV]RS c^BcaX]V OcT RO[Wb RWS ES`bS ºPS` BhbcT\ ^dc OZa Ab`W\U O\UShSWUb eS`RS\
=KXZ`[]KOY[TMHKO8KLKXKT`Z_VKT ES\\ SW\S @STS`S\hdO`WOPZS dS`O`PSWbSb eS`RS\ a]ZZ [caa aWS OZa ES`b S\beSRS` ]d[[ S\bVOZbS\ eS\\ Tº` aWS \]QV YSW\ =PXSYb SfWabWS`b ]RS` SW\S @STS`S\h c[ SW\ =P XSYb hc S``SWQVS\ 2OPSW Yr\\S\ Rc`QVOca [SV`S`S @STS`S\hdO`WOPZS OcT ROaaSZPS =PXSYb dS`eSWaS\ ?a^VaP\\ ?^X]c !) IfTX ATUTaT]iT] PQTa ]da >QYTZc import java.awt.*; public class Point02 { public static void main(String[] args) { Point p1 = new Point(5,3); Point p2; p2 = p1; // Wertezuweisung System.out.println(p2.toString()); } } A] eWS ^`W[WbWdS\ DO`WOPZS\ SW\ ES`b hcUSeWSaS\ eS`RS\ YO\\ a] Wab RWSa OcQV Tº` @STS`S\hdO`WOPZS\ S`ZOcPb /ZZS`RW\Ua UWZb Tº` PSWRS DO`WOPZS\O`bS\( RWS ES`bS [ºaaS\ Y][^ObWPSZ aSW\ R V aWS [ºaaS\ hc RS[ 3[^TÉ\US` ^OaaS\ <WQVb S`ZOcPb h 0 Wab RWS HceSWac\U SW\Sa ^`W[WbWdS\ Bg^a O\ SW\S\ @STS`S\hbg^ RS\\ RWSaS DO`WOPZS\ aW\R \WQVb idfTXbd]VbeTacaÊV[XRW 3W\S` @STS`S\hdO`WOPZS\ YO\\ \c` SW\ ES`b hc USeWSaS\ eS`RS\ RS` RS[ 9ZOaaS\bg^ S\ba^`WQVb [Wb RS[ aWS RSTW\WS`b e]`RS\ Wab ÎQd]V id\ ?a^VaP\\ ?^X]c ! ÎQd]V ( ÍPS`ZSUS\ AWS hc\ÉQVab bVS]`SbWaQV RWS /caeW`Yc\U T]ZUS\RS` >`] U`O[[É\RS`c\U( ESWaS\ AWS RS` DO`WOPZS\ ^ c\[WbbSZPO` d]` RS[ /caUOPSPSTSVZ ]d[[ hc Rc`QV( p1 = null;" 9O\\ ^ b`]bhRS[ Y]``SYb OcaUSUSPS\ eS`RS\- ÍPS`^`ºTS\ AWS RWSa ^`OYbWaQV ÎQd]V !) DS`acQVS\ AWS RO\OQV RWS ES`bS RSa =PXSYba _ OcahcUSPS\ :rac\Ua VW\eSWa( 3a [ºaabS T]ZUS\RS 4SVZS`[SZRc\U Y][[S\( Exception in thread "main" java.lang.NullPointerException". %
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Stand: 22.12.2005 13:39:00 ))
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%
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Stand: 22.12.2005 13:39:00 ))
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ATUTaT]iePaXPQ[T]
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Stand: 22.12.2005 13:39:00 ))
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final double MWST;
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final double MWST = 19.0;
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public class Konstanten01 { public static void main(String[] args) { final double MWST; MWST = 19.5; System.out.println(MWST); } } ES\\ RS` ES`b RS` 9]\abO\bS\ SW\[OZ TSababSVb YO\\ S` RO\OQV \WQVb [SV` []RWTW hWS`b eS`RS\ \c` Rc`QV Ò\RS`c\U RSa ?cSZZbSfbSa [Wb O\aQVZWSzS\RS` C[eO\R Zc\U E] ZWSUb RS` AW\\- Hc\ÉQVab SW\[OZ eW`R Rc`QV ROa AQVZºaaSZe]`b UX]P[ dS` VW\RS`b ROaa SW\S dS`aSVS\bZWQVS ;]RWTWYObW]\ RSa A^SWQVS`W\VOZba S`T]ZUb /czS`RS[ eW`R RWS :SaPO`YSWb S`VrVb RS\\ RS` 0SU`WTT ;EAB Wab OcaaOUSTÉVWUS` OZa RWS HOVZ & C\R hcaÉbhZWQV eW`R W[[S` RO\\ RWS EO`bc\UaT`Sc\RZWQVYSWb dS`PSaaS`b eS\\ RS` ES`b O\ [SV`S`S\ AbSZZS\ W[ >`]U`O[[ PS\cbhb eW`R RS\\ PSW SdS\bcSZZS\ Ò\ RS`c\US\ [caa \c` O\ SW\S` AbSZZS []RWTWhWS`b eS`RS\ ?a^VaP\\ :^]bcP]cT] !) :»]]T] :^]bcP]cT]fTacT VTÊ]STac fTaST].
public class Konstanten02 { public static void main(String[] args)
{
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Stand: 22.12.2005 13:39:00 ))
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Stand: 22.12.2005 13:39:00 ))
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(( merker2.doc
Stand: 22.12.2005 13:39:00 ))
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Stand: 22.12.2005 13:39:00 ))
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(( merker2.doc
Stand: 22.12.2005 13:39:00 ))
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(( merker2.doc
Stand: 22.12.2005 13:39:00 ))
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Arbeiten mit Float-Literalen public class Literal08 { public static void main(String[] args) float d1 = 5e-3f; System.out.println(d1); } }
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(( merker2.doc
Stand: 22.12.2005 13:39:00 ))
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(( merker2.doc
Stand: 22.12.2005 13:39:00 ))
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import java.io.*; public class Stream01 { public static void main(String[] args) throws Exception { InputStreamReader eingabe = new InputStreamReader(System.in); int zeichen = eingabe.read(); System.out.println(zeichen); } }
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Stand: 22.12.2005 13:39:00 ))
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(( merker2.doc
Stand: 22.12.2005 13:39:00 ))
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// Kommentarzeile (das erste Zeichen wird gelesen) import java.io.*; public class Stream02 { public static void main(String[] args) throws Exception { InputStream eingabe = new FileInputStream("Stream02.java"); int zeichen = eingabe.read(); System.out.println(zeichen); } }
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(( merker2.doc
Stand: 22.12.2005 13:39:00 ))
% 4X]VPQT d]S 0dbVPQT SdaRWU¶WaT] X ^^_TaPcX^]
;TZKXYINOKJROINK/TZKXVXKZGZOUTJKX+OTMGHK 2Oa >`]U`O[[ BcaTP\ ! ZWSab 2ObS\ SW\ 7[ >`]U`O[[ [caa S\baQVWSRS\ eS`RS\ eWS RWS SW\USZSaS\S 0WbY][PW\ObW]\ W\bS`^`SbWS`b eS`RS\ a]ZZ ;Wb SW\TOQVS\ ;WbbSZ\ YO\\ RS` SW\USZSaS\S X]cES`b h 0 OZa SW\ C\WQ]RSHSWQVS\ QVO`OQbS` W\bS`^`SbWS`b eS`RS\ 2WSa RS[]\ab`WS`b ROa \OQVT]ZUS\RS >`]U`O[[ ?a^VaP\\ BcaTP\ ") 8]cTa_aTcPcX^] STa 4X]VPQT P[b RWPa import java.io.*; public class Stream03 { public static void main(String[] args) throws Exception { InputStreamReader eingabe = new InputStreamReader(System.in); int zeichen = eingabe.read(); System.out.println((char)zeichen); } }
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Stand: 22.12.2005 13:39:00 ))
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BcaTP\:^]iT_c
?a^VaP\\ BcaTP\ #) C2? 8?ETaQX]Sd]V P[b 4X]VPQTbca^\ import java.net.*; import java.io.*; public class Stream04 { public static void main(String[] args) throws Exception { ServerSocket ss = new ServerSocket(1500); Socket s = ss.accept(); DataInputStream ein = new DataInputStream(s.getInputStream()); int zahl = ein.read(); System.out.println(zahl); } }
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(( merker2.doc
Stand: 22.12.2005 13:39:00 ))
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import java.util.Scanner; public class TryCatch01 { public static void main(String[] args) { int zahl; Scanner eingabe = new Scanner(System.in); String str = eingabe.next(); // Erstes Wort lesen try { zahl = Integer.parseInt(str); // Konvertieren in Ganzzahl } catch (NumberFormatException e) { System.out.println("Es wurde keine Ganzzahl eingegeben"); System.exit(8); } System.out.println("Der eingegebene Text ist ok"); } }
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Stand: 22.12.2005 13:39:00 ))
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eTJKXTJKY*KROSOZKXJKY(KMXKT`[TMY`KOINKTY`[S'[LZXKTTKTJKX(KMXOLLK 2WS 9ZOaaS BRP]]Ta PWSbSb RS[ >`]U`O[[WS`S` RWS ;rUZWQVYSWb RS\ 2SZW[WbS` B`S\\hSWQVS\ XS \OQV AWbcObW]\ hc É\RS`\ 2Oa B`S\\hSWQVS\ Tº` SW\hSZ\S B]YS\ YO\\ Rc`QV /cT`cT RS` ;SbV]RS dbT3T[X\XcTa USÉ\RS`b eS`RS\ ASV` VÉcTWU eS`RS\ RWS SW\hSZ\S\ 0SU`WTTS RS` 3W\UOPSRObS\ Rc`QV 9][[O OPUSb`S\\b c\R ROa T]ZUS\RS >`]U`O[[ hSWUb SW\S :rac\U Tº` RWSaS /cTUOPS\abSZZc\U ?a^VaP\\ BRP]]Ta #) Ó]STa] STb 1TVaT]id]VbiTXRWT]b import java.util.Scanner; public class Scanner04 { public static void main(String[] args) { Scanner eingabe = new Scanner(System.in); eingabe.useDelimiter(","); // Delimiter aendern String str = eingabe.next(); // Komplettes Wort lesen int zahl1 = eingabe.nextInt(); // Ganzzahl lesen double zahl2 = eingabe.nextDouble(); // E-Format z.B. 5e3 lesen System.out.printf("%s | %d | %f", str, zahl1,zahl2); } }
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(( merker2.doc
Stand: 22.12.2005 13:39:00 ))
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import java.util.Scanner; public class Scanner05 { public static void main(String[] args) { Scanner eingabe = new Scanner(System.in); String zeilenende = System.getProperty("line.separator"); eingabe.useDelimiter(zeilenende); // Delimiter aendern String zeile1 = eingabe.next(); // Komplettes Zeile lesen String zeile2 = eingabe.next(); // nächste Zeile lesen System.out.printf("%s %s", zeile1, zeile2); } }
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(( merker2.doc
Stand: 22.12.2005 13:39:00 ))
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3W\ AbObS[S\b [Wb RS\ 0ShSWQV\S`\ BhbcT\ ^dc PSeW`Yb ROaa RWS 9ZOaaS BhbcT\ USZO RS\ eW`R 7\ RS[ bcPcXR4SZR ^dc abSVb SW\S @STS`S\h OcT RWS OYbcSZZS AbO\RO`R /caUOPSSW\VSWb 3W\ C[ZSWbS\ Wab XSRS`hSWb [rUZWQV eWS ROa T]ZUS\RS >`]U`O[[ hSWUb ?a^VaP\\ ATSXaTRc ) D\[TXcT] STa BcP]SPaS0dbVPQT X] 3PcTX import java.io.*; public class Redirect01 { public static void main(String[] args) throws Exception { System.setOut(new PrintStream(new FileOutputStream("a.txt"))); System.out.println("Der Text wird umgeleitet in Datei"); } }
'XHKOZKTSOZVXOTZRT[TJVXOTZ 2Oa 3`USP\Wa SW\S` /caUOPS [Wb RS\ dS`aQVWSRS\S\ _aX]c Phe U^a\Pc;SbV]RS\ Wab W[[S` SW\ Ab`W\U Ch_XbXTacT 3PcT] eWS X]c ]RS` U[^Pc eS`RS\ d]` RS` SWUS\bZWQVS\ /caUOPS Ocb][ObWaQV W\ SW\S Ab`W\U@S^`ÉaS\bObW]\ c[USeO\RSZb ?a^VaP\\ ?aX]c ) 0dbVPQT e^] 9PeP3PcT]ch_T] PdU 2^]b^[T public class Print01 { public static void main(String args[]){ int monat = 5; float gehalt = 2123.45f; String s1 = "Im Monat "; String s2 = "haben Sie "; System.out.print(s1 + monat + " "); System.out.print(s2 + gehalt + " "); System.out.println("verdient"); } } 2S` /caUOPSab`][ YO\\ OZa] Oca SW\S` 9][PW\ObW]\ d]\ PSZWSPWUS\ 8OdO2ObS\bg^S\ PSabSVS\ 2WS ^`W[WbWdS\ 2ObS\bg^S\ eS`RS\ Ocb][ObWaQV W\ SW\S\ Ab`W\U c[USeO\ ''
(( merker2.doc
Stand: 22.12.2005 13:39:00 ))
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public class Format01 { public static void main(String args[]) { float gehalt = 2000.00f; System.out.format("%f \n", gehalt); System.out.format("%e \n", gehalt); System.out.format("%g \n", gehalt); } } ÎQd]V id\ ?a^VaP\\ 5^a\Pc 3`aSbhS\ AWS RS\ ;SbV]RS\\O[S U^a\Pc Rc`QV _aX]cU
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(( merker2.doc
Stand: 22.12.2005 13:39:00 ))
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import java.io.*; public class Format02 { public static void main(String args[]) { int zahl = 90; System.out.format("%1$d / %`]U`O[[ a] ROaa OZa B`S\\hSWQVS\ \WQVb SW\ AQV`ÉUab`WQV a]\RS`\ SW\ 9][[O OcaUSUSPS\ eW`R Hc[ /PaQVZcaa a]ZZ SW\ 0SWa^WSZ RWS /caUOPS d]\ :WbS`OZS\ c\R bg^WaWS`bS\ DO`WOPZS\ RS[]\ab`WS`S\ ?a^VaP\\ 5^a\Pc ") 5^a\PcXTad]V \Xc ;XcTaP[T] d]S ch_XbXTacT] EPaXPQ[T] import java.io.*; public class Format03 { public static void main(String args[]) { int monat1 = 5; float gehalt1 = 2123.45f; String s1 = "Im Monat "; String s2 = "haben Sie "; String s3 = "%s %02d %s %4.2f verdient\n"; System.out.format(s3, s1, monat1, s2, gehalt1); System.out.format(s3, s1, 11, s2, 983f); } }
(( merker2.doc
Stand: 22.12.2005 13:39:00 ))
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import java.io.*; public class Datei01 { public static void main(String[] args) throws Exception { OutputStream aus = new FileOutputStream("test1.dat"); DataOutput datenAus = new DataOutputStream(aus);
(( merker2.doc
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datenAus.writeInt(4700); datenAus.writeUTF("Merker"); datenAus.writeUTF("Steinfurt"); } } 2Oa >`]U`O[[ 3PcTX PS\cbhb RWS 9ZOaaS 3PcP>dc_dcBcaTP\ 2WSaS S\bVÉZb Tº` OZZS SW\USPOcbS\ 8OdO2ObS\bg^S\ SWUS\S /caUOPS[SbV]RS\ h 0 Tº` 5O\hhOVZS\ RWS ;SbV]RS faXcT8]c /czS`RS[ Yr\\S\ C\WQ]RSHSWQVS\ SW\hSZ\ [Wb faXcT2WPa ]RS` OZa Ab`W\U [Wb faXcT2WPab OcaUSUSPS\ eS`RS\ 2OPSW PSZSUb XSRSa HSWQVS\ heSW 0gbSa W\ RS` /caUOPSRObSW FPb QTSTdcTc DC5. 7[ >`]U`O[[ 3PcTX PS\cbhS\ eW` RWS ;SbV]RS faXcTDC5 Tº` RWS Ab`W\U/caUOPS c\R RWS VOb SW\S 0Sa]\RS`VSWb( C[ W\ RS` /caUOPSRObSW >ZObh hc a^O`S\ eW`R XSRSa C\WQ]RShSWQVS\ \OQV PSabW[[bS\ DS`TOV`S\ b`O\aT]`[WS`b PSd]` Sa W\ RS\ /caUOPS ab`][ USaQV`WSPS\ eW`R 2OPSW USZbS\ T]ZUS\RS B`O\aT]`[ObW]\a`SUSZ\( •
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import java.io.*; public class Datei02 { public static void main(String[] args) throws Exception { InputStream ein = new FileInputStream("test1.dat"); DataInput datenEin = new DataInputStream(ein); int plz = datenEin.readInt(); String kdname = datenEin.readUTF(); String ort = datenEin.readUTF(); System.out.println(plz + " " + kdname + " " + ort); } } ÎQd]VT] id\ ?a^VaP\\ 3PcTX ! ÎQd]V ( Ò\RS`\ AWS hc\ÉQVab ROa AQV`SWP>`]U`O[[ 3PcTX YPeP a] OP ROaa SW\S heSWbS /R`SaaS W\ RWS 2ObSW USaQV`WSPS\ eW`R ÎQd]V !( 2O\OQV a]ZZ OcQV ROa :SaS>`]U`O[[ 3PcTX ! YPeP a] USÉ\RS`b eS`RS\ ROaa RWSaS heSWbS /R`SaaS SW\USZSaS\ c\R O\UShSWUb eW`R
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Stand: 22.12.2005 13:39:00 ))
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Stand: 22.12.2005 13:39:00 ))
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CP-1252: ®
CP-850: «
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Stand: 22.12.2005 13:39:00 ))
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import java.io.*; public class Konvert02 { public static void main(String[] args) throws Exception { BufferedReader eingabe = new BufferedReader( new InputStreamReader(new FileInputStream( "Stream01.txt"), "CP1252")); BufferedWriter ausgabe = new BufferedWriter( new OutputStreamWriter(new FileOutputStream( "Stream02.txt"), "UTF-16")); int zeichen = eingabe.read(); ausgabe.write(zeichen); zeichen = eingabe.read(); ausgabe.write(zeichen); zeichen = eingabe.read(); ausgabe.write(zeichen); zeichen = eingabe.read(); System.out.println((char)zeichen); ausgabe.close(); } } 7\ RS[ >`]U`O[[ :^]eTac ! a]`US\ RWS 0`ºQYS\YZOaaS\ 8]_dcBcaTP\ATPSTa Phe >dc_dcBcaTP\ATPSTa Tº` ROa 3\Q]RW\U d]\ &PWb/A177 \OQV CB4 $ C\WQ]RS 2Oa 3`USP\Wa RWSaS` 9]\dS`bWS`c\U abSVb W\ RS` 2ObSW BcaTP\ ! cgc 2WSaS 2ObSW Wab W\aUS aO[b 0gbSa U`]z \SPS\ RS\ 0gbSa XS HSWQVS\ S\bVÉZb aWS OcQV SW\ AbScS`hSW QVS\ ÎQd]VT] id\
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Stand: 22.12.2005 13:39:00 ))
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ausgabe.write((char)zeichen);
2Oa 3`USP\Wa RWSaS` /caUOPS Wab RS` R]^^SZbS >TSWZ ZOcb 1VO`OQbS`aSb 1>&# ÎQd]V "( >`ºTS\ AWS eWS aWQV RS` 2ObSWW\VOZb RS` /caUOPSRObSW dS`É\RS`b eS\\ AWS Tº` RWS /caUOPS abObb CB4 $ RS\ 1VO`OQbS`aSb CB4& PS\cbhS\ ÎQd]V #( ;caa Tº` RWS 3W\UOPSRObSW RS` 1VO`OQbS`aSb 1> # heW\US\R O\USUSPS\ eS`RS\ ]RS` Wab RWSa RWS AbO\RO`RO\\OV[S- 9O\\ OZa] RWS /\UOPS S\bTOZZS\- 2Oa \ÉQVabS >`]U`O[[ eW`R RS\ 7\VOZb RS` 2ObSW BcaTP\ ! cgc OZa dWS` C\WQ]RS HSWQVS\ W\bS`^`SbWS`S\ c\R RWSaS eWSRS` hc`ºQYTºV`S\ W\ /A1772ObS\ ?a^VaP\\ :^]eTac ") 4X][TbT] e^] # D]XR^STiTXRWT] d]S X] 0B288 d\fP] ST[] import java.io.*; public class Konvert03 { public static void main(String[] args) throws Exception { BufferedReader eingabe = new BufferedReader( new InputStreamReader(new FileInputStream( "Stream02.txt"), "UTF-16")); BufferedWriter ausgabe = new BufferedWriter( new OutputStreamWriter(new FileOutputStream( "Stream03.txt"), "8859_1")); int zeichen = eingabe.read(); ausgabe.write(zeichen); zeichen = eingabe.read(); ausgabe.write(zeichen); zeichen = eingabe.read(); ausgabe.write(zeichen); zeichen = eingabe.read(); ausgabe.write(zeichen); ausgabe.close(); } } 2Oa 3`USP\Wa \OQV /caTºV`c\U RSa >`]U`O[[a :^]eTac " abSVb W\ RS` 2ObSW BcaTP\ " cgc /ca RS\ 0gbSa RS` 3W\UOPSRObSW ec`RS\ eWSRS` RWS " 0gbSa RWS OcQV aQV]\ RWS 2ObSW BcaTP\ cgc VObbS 8Sbhb Yr\\bS\ eW` W\ SW\S[ eSWbS`S\ >`]U`O[[ RWSaS " 0gbSa OZa 7\bSUS`eS`b W\bS` ^`SbWS`S\ c\R O[ 0WZRaQVW`[ OZa 2ShW[OZhOVZ %" OcaUSPS\(
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Stand: 22.12.2005 13:39:00 ))
% #
3PcTXeTaPaQTXcd]V
?a^VaP\\ :^]eTac #) 8]cTa_aTcXTaT] e^] # 0B2881hcTb P[b 8]cTVTafTac import java.io.*; public class Konvert04 { public static void main(String[] args) throws Exception { InputStream ein = new FileInputStream("Stream03.txt"); DataInput eingabe = new DataInputStream(ein); int zeichen = eingabe.readInt(); System.out.println(zeichen); } }
(KOYVOKRVXUMXGSSKLX+TIUJOTM[TJ)NGXGIZKXYKZ Hc` DS`bWSTc\U RWSaSa BVS[Oa T]ZUS\ \]QV heSW 0SWa^WSZS RWS hSWUS\ a]ZZS\ eWS eWQVbWU RS` `WQVbWUS 3W\aObh RSa 3\Q]RW\U;SQVO\Wa[ca Wab 2Oa S`abS 0SWa^WSZ UWPb SW\S\ BSfb Oca ]V\S PSa]\RS`S 6W\eSWaS hc SW\S[ 3\Q] RW\U) W[ heSWbS\ 0SWa^WSZ eW`R SW\ W\RWdWRcSZZSa 3\Q]RW\U Sf^ZWhWb O\USUSPS\ ?a^VaP\\ 4]R^ST ) 0aQTXcT] \Xc BcP]SPaS4]R^SX]V import java.io.*; public class Encode01 { public static void main(String[] args) throws Exception { Writer writer = new FileWriter("ausgabe.txt"); writer.write("Java\u1234"); writer.close(); } } `]U`O[[a S\bVÉZb RWS /caUOPSRObSW # 0gbSa ]Pe]VZ ROa ZSbhbS HSWQVS\ SW\ C\WQ]RSHSWQVS\ Wab !" Wab RS` 1]RS^c\Yb Tº` ROa >`][WZZS HSWQVS\ 2WS 2ObSW S\bVÉZb O\ RWSaS` AbSZZS SW\ - 4`OUShSWQVS\ c\R ROa Wab ROa AbO\RO`RhSWQVS\ Tº` OZZS C\WQ]RSeS`bS RWS \WQVb W[ /A1771]RS S\bVOZbS\ aW\R 2WS Y]``SYbS /caUOPS d]\ C\WQ]RSHSWQVS\ RWS \WQVb W[ 0S`SWQV RS` & /A177 HSWQVS\ ZWSUS\ S`T]`RS`b RWS OcaR`ºQYZWQVS /\UOPS SW\S` 3\Q]RW\UBOPSZZS HcaÉbh ZWQV [caa RWS /caUOPSYZOaaS USÉ\RS`b eS`RS\ 2Oa \OQVT]ZUS\RS >`]U`O[[ RS []\ab`WS`b eWS PSZWSPWUS C\WQ]RShSWQVS\ W\ SW\S 2ObSW OcaUSUSPS\ eS`RS\ Yr\\S\ ?a^VaP\\ 4]R^ST !) 0aQTXcT] \Xc X]SXeXSdT[[T\ 4]R^SX]VBRWT\P SdaRW 0]VPQT STb 2WPaPRcTabTcb import java.io.*; public class Encode02 { public static void main(String[] args) throws Exception { FileOutputStream fos = new FileOutputStream("aus.txt"); '
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Stand: 22.12.2005 13:39:00 ))
% 4X]VPQT d]S 0dbVPQT SdaRWU¶WaT] X ^^_TaPcX^]
Writer writer = new OutputStreamWriter(fos, "UTF-8"); writer.write("testing\u2030"); writer.close(); } }
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writer.write(0x0078);
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Stand: 22.12.2005 13:39:00 ))
% #
3PcTXeTaPaQTXcd]V
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Stand: 22.12.2005 13:39:00 ))
% 4X]VPQT d]S 0dbVPQT SdaRWU¶WaT] X ^^_TaPcX^]
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Stand: 22.12.2005 13:39:00 ))
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zahl = 25 a + 5 / b a > 3
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zahl = 25; System.out.println(a+ 5 / b); boolean b = a > 3;
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Stand: 22.12.2005 13:39:00 ))
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class Ausdruck01 i public static void main(String[] args) { double gehalt = 2000; gehalt = gehalt * 1.15 - 8; System.out.println("Das neue Gehalt ist: " + gehalt); } } 6W\eSWa( 7\ RS` S`abS\ HSWZS TSVZb RS` ;]RWTWS` _dQ[XR ROa PSRScbSb ROaa RS` HcU`WTT OcT RWSaS 9ZOaaS PSU`S\hb Wab OcT ROa >OQYOUS eSWbS`S 3`ZÉcbS`c\US\ aWSVS $ % ! 2WS HSWZS " S\bVÉZb SW\S\ hcaO[[S\USaSbhbS\ /caR`cQY 3` PSabSVb Oca =^S`O\RS\ c\R Oca =^S`Ob]`S\ 2WS =^S`Ob]`S\ aW\R RWS PSWRS\ Ag[P]ZS c\R 2WS =^S`O\ RS\ aW\R VTWP[c $ c\R ' 3W\ >_TaPc^a Wab SW\ a^ShWSZZSa Ag[P]Z ]RS` SW\S 9][PW\ObW]\ d]\ [SV`S`S\ Ag[P]ZS\ ROa SW\S PSabW[[bS /YbW]\ dS`O\ZOaab h 0 SW\S /RRWbW]\ Rc`QV ROa >ZcahSWQVS\ ]RS` SW\ DS`UZSWQV d]\ ES`bS\ Rc`QV 5`rzS` ]RS` 9ZSW\S`hSWQVS\ , * fPb a]ZZ USbO\ eS`RS\- 3W\ >_TaP]S Wab SW\S DO`WOPZS SW\S 9]\abO\bS ]RS` SW\ :WbS`OZ [Wb RS[ USO`PSWbSb eW`R f^\Xc a]ZZ SbeOa US[OQVb eS`RS\- 4X] 0dbSadRZ WPc TX]T] 3PcT]ch_
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# %
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(( merker2.doc
Stand: 22.12.2005 13:39:00 ))
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gehalt * 1.15 - 8
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class Ausdruck02 { public static void main(String[] args) { // int z1 = (int)1.23 * 100; // Zuerst 1.23 in int konvertieren int z1 = (int) (123 * 100); // Zuerst multiplizieren System.out.println(z1); } }
#
(( merker2.doc
Stand: 22.12.2005 13:39:00 ))
& 0dbSa¶RZT eTabcTWT] Tg_aTbbX^]
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class Arithmetik01 { public static void main(String[] args) { float a = 25.7f; float b = 5f; short x = 212; int y = 148; System.out.println("x System.out.println("x System.out.println("x System.out.println("a
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class Arithmetik02 { public static void main(String[] args) { int y = 15; System.out.println(y % 4); } } $
(( merker2.doc
Stand: 22.12.2005 13:39:00 ))
& !
0aXcW\TcXbRWT >_TaPc^aT]
ATRW]T] \Xc QhcT ^STa RWPa3PcT]ch_T] 3beOa c\USerV\ZWQV Wab aWQVS`ZWQV ROaa OcQV [Wb DO`WOPZS\ RS` 2ObS\bg^S\ QhcT ]RS` RWPa US`SQV\Sb eS`RS\ YO\\ BSQV\WaQV Wab RWSa YSW\S 0Sa]\RS`VSWb RS\\ OcQV RWS aS 2ObS\ eS`RS\ PW\É` RO`USabSZZb c\R heO` OPVÉ\UWU d]\ RS` >]aWbW]\ RSa HSWQVS\a W[ C\WQ]RS /cQV eS\\ Sa eOV`aQVSW\ZWQV \c` W\ /ca\OV[STÉZZS\ aW\\d]ZZ Wab @SQVS\]^S`ObW] \S\ OcT RWSaS 2ObS\bg^S\ O\hceS\RS\ a]ZZ ROa \ÉQVabS 0SWa^WSZ SW\S [rUZWQVS /\ eS\Rc\U RS[]\ab`WS`S\ 2OPSW PS\cbhS\ eW` SW\ a] US\O\\bSa 7\Y`S[S\b 2WSa S` VrVb RS\ 7\VOZb SW\S` \c[S`WaQVS\ DO`WOPZS\ c[ aWSVS c\É`S =^S`Ob]`S\ ?a^VaP\\ ITXRWT] ) ATRW]T] \Xc RWPaEPaXPQ[T] public class Zeichen01 { public static void main(String args[]) char zeichen = 'A'; System.out.println(++zeichen); } }
{
2S` YZSW\abS 2ObS\bg^ [Wb RS[ W\ 8OdO US`SQV\Sb eS`RS\ YO\\ Wab X]c R V aQV[OZS `S Bg^S\ eS`RS\ hc X]c Y]\dS`bWS`b ?a^VaP\\ 1hcT ) 4aVTQ]XbePaXPQ[T WPc UP[bRWT] 3PcT]ch_ public class Byte01 { public static void main(String args[]) { byte b1 = 10; byte b2 = 11; byte erg = b1 + b2; System.out.println(erg); } } ES\\ AWS dS`acQVS\ RWSaSa >`]U`O[[ c[hceO\RSZ\ UWPb Sa SW\S 4SVZS`[SZRc\U _^bbXQ[T [^bb ^U _aTRXbX^] U^d]S X]c aT`dXaTS QhcT AW\\US[Éz PSRScbSb ROa ROaa OZa 3`USP\Wa RS` /RRWbW]\ W\ RS` HSWZS # SW\ 7\bSUS`eS`b USTc\RS\ ec`RS RSaVOZP [caa OcQV RWS 3`USP\WadO`WOPZS [W\RSabS\a RS\ Bg^ X]c VOPS\ ÎQd]VT] id\ ?a^VaP\\ 1hcT ÎQd]V ) 0WbbS É\RS`\ AWS ROa >`]U`O[[ a] ROaa ROa `WQVbWUS 3`USP\Wa OcaUS USPS\ eW`R ÎQd]V !) ÍPS`ZSUS\ AWS ]P ROa ]PWUS >`]U`O[[ TSVZS`T`SW c[USeO\RSZb eS`RS\ YO\\ eS\\ RS` 2ObS\bg^ OZZS` R`SW DO`WOPZS\ d]\ QhcT \OQV RWPa USÉ\RS`b eW`R :r ac\UaVW\eSWa( 3W\S RWPaDO`WOPZS Wab 0gbS ZO\U SW\S X]cDO`WOPZS Wab " 0gbS ZO\U ÍPS`^`ºTS\ AWS ROa 3`USP\Wa 7V`S` 2S\YO`PSWb %
(( merker2.doc
Stand: 22.12.2005 13:39:00 ))
& 0dbSa¶RZT eTabcTWT] Tg_aTbbX^]
ATRW]T] \Xc 6[TXcZ^\\P3PcT]ch_T] ES\\ PSW UO\hhOVZWUS\ 2ObS\bg^S\ SW\S 2WdWaW]\ Rc`QV _TaPcX^]T] \Xc 6[TXcZ^\\PIPW[T] public class Gleitkomma01 { public static void main(String[] args) { double zahl1 = 15.21; double zahl2 = 0.0; double erg = zahl1 / zahl2; System.out.println("Ergebnis ist: " + erg); } } DO`WOPZS d][ Bg^ 5ZSWbY][[O YS\\S\ \SPS\ X]UX]Xch \]QV SW\S\ O\RS`S\ a^ShWSZ ZS\ ES`b( \WQVb RSTW\WS`b Phe YSW\S HOVZ <]bO
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(( merker2.doc
Stand: 22.12.2005 13:39:00 ))
& !
0aXcW\TcXbRWT >_TaPc^aT]
7\bS`\ eS`RS\ RWS @SQVS\d]`UÉ\US\ \c` [Wb RS[ 2ObS\bg^ X]c ]RS` U`rzS` OcaUS TºV`b 2Oa VSWzb YZSW\S` OZa " 0gbS USVb \WQVb ES\\ RWS =^S`O\RS\ d][ c\bS` aQVWSRZWQVS\ Bg^ aW\R eW`R [W\RSabS\a W\ RS\ X]cBg^ Y]\dS`bWS`b 2WSaS` D]`UO\U eW`R OcQV OZa ]d\TaXR _a^\^cX^] PShSWQV\Sb ?a^VaP\\ 1hcT !) =d\TaXR ?a^\^cX^] QTX d]cTabRWXTS[XRWT] 3PcT]ch_T] public class Byte02 { public static void main(String args[]) byte z1 = 10; z1 = z1 + 5; System.out.println(z1); } }
{
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;ToXKGXOZNSKZOYINK5VKXGZUXKT 8OdO=^S`Ob]`S\ dS`ZO\US\ S\beSRS` SW\ heSW ]RS` R`SW =^S`O\RS\ 2WS PWaVS` PS a^`]QVS\S\ O`WbV[SbWaQVS\ =^S`Ob]`S\ aW\R a] US\O\\bS QX]ÊaT RgORWaQVS =^S`O b]`S\ aWS abSVS\ heWaQVS\ heSW =^S`O\RS\ 2O`ºPS` VW\Oca UWPb Sa d]ÊaT []\ORW aQVS =^S`Ob]`S\ RWS \c` SW\S\ =^S`O\RS\ S`T]`RS`\ C\R Sa UWPb a]UO` SW\S\ =^S `Ob]` RS` R`SW =^S`O\RS\ S`T]`RS`b RS\ 0SRW\Uc\Ua]^S`Ob]` aWSVS c\bS` 7T0STSVZ 2WSaS` eW`R cT]Êa b`WORWaQV US\O\\b C\É`S =^S`Ob]`S\ dS`ZO\US\ OZa] \c` SW\S\ =^S`O\RS\ 0SW RS\ O`WbV[SbWaQVS\ 0STSVZS\ UWPb Sa heSW c\bS`aQVWSRZWQVS /ca^`É Uc\US\ RS` c\É`S\ =^S`Ob]`S\( Tº` RWS D]`hSWQVS\RO`abSZZc\U c\R Tº` RWS 7\Y`S [S\bPWZRc\U E^aiTXRWT] ;Wb RS[ ;W\cahSWQVS\ YO\\ OZa] \WQVb \c` RWS 2WTTS`S\h heWaQVS\ heSW =^S`O\RS\ S`[WbbSZb eS`RS\ Sa YO\\ OcQV OZa c\É`S` =^S`Ob]` c\[WbbSZPO` d]` SW\S[ =^S`O\ RS\ abSVS\ 2O\\ VOb Sa RWS 0SRScbc\U SW\Sa D]`hSWQVS\a ?a^VaP\\ 0aXcW\TcXZ $) 0aQTXcT] \Xc E^aiTXRWT] public class Arithmetik05 { public static void main(String args[]) byte z1 = -10; long z2 = -11; long erg = z1 + -z2; System.out.println(erg); } }
{
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(( merker2.doc
Stand: 22.12.2005 13:39:00 ))
& 0dbSa¶RZT eTabcTWT] Tg_aTbbX^]
8]ZaT\T]c 3TZaT\T]c 4º` RWS /RRWbW]\ c\R AcPb`OYbW]\ UWPb Sa OPUSYº`hbS AQV`SWPeSWaS\ /cQV RWSaS S` T]`RS`\ \c` SW\S\ =^S`O\RS\ c\R eS`RS\ RSaVOZP SPS\TOZZa OZa c\É`S =^S`Ob]`S\ PShSWQV\Sb 3a VO\RSZb aWQV c[ ROa 7\Y`S[S\b W\Q`S[S\b S\UZ HceOQVa c\R ROa 2SY`S[S\b 2c`QV RS\ =^S`Ob]` eW`R RS` 7\VOZb SW\S` DO`WOPZS\ c[ S`VrVb 3W\ bg^WaQVSa 3W\aObhUSPWSb Wab RWS AQVZSWTS\PWZRc\U PSW RS` :OcTdO`WOPZS\ `OcT ]RS` `c\bS`UShÉVZb eS`RS\ aWSVS 9O^WbSZ & # ! ?a^VaP\\ 8]ZaT\T]c ) 0aQTXcT] \Xc 8]ZaT\T]c class Inkrement01 { public static void main(String[] args) { int zahl = 0; zahl++; // Kurzschreibweise für: zahl = zahl + 1; System.out.println(zahl); } } 2S` /caR`cQY iPW[* Wab SW\S Y][^ZSbbS /\eSWac\U RS\\ S` eW`R OPUSaQVZ]aaS\ [Wb SW\S[ AS[WY]Z]\ 3` VOb RWSaSZPS EW`Yc\U eWS RWS SbeOa OcaTºV`ZWQVS`S /\eSW ac\U iPW[ , iPW[ * 2c`QV RS\ =^S`Ob]` eW`R RS` 7\VOZb SW\S` DO`WOPZS\ c[ `SRchWS`b ?a^VaP\\ 3TZaT\T]c ) 0aQTXcT] \Xc 3TZaT\T]c class Dekrement01 { public static void main(String[] args) { int zahl = 0; zahl--; // Kurzschreibweise für: zahl = zahl - 1; System.out.println(zahl); } } ?aT ^STa ?^bcUXg 0SW[ /`PSWbS\ [Wb 7\Y`S[S\b Phe 2SY`S[S\b=^S`Ob]`S\ Wab \]QV SW\S eWQVbWUS 0Sa]\RS`VSWb hc PSOQVbS\ 0SWRS =^S`Ob]`S\ Yr\\S\ a]e]VZ W\ >`ÉTWf OZa OcQV W\ RS` >]abTWf<]bObW]\ dS`eS\RSb eS`RS\( >`ÉTWf hOVZ hOVZ
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Stand: 22.12.2005 13:39:00 ))
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TWfDS`aW]\ eW`R RWS DO`WOPZS hcS`ab dS`É\RS`b c\R RO\\ PS\cbhb W\ RS` >]abTWf DS`aW]\ eW`R aWS S`ab PS\cbhb c\R RO\\ c[ []RWTWhWS`b >`OYbWaQVS /caeW`Yc\U VOb RWSaS C\bS`aQVSWRc\U \c` RO\\ eS\\ ROa 6]QVhÉVZS\ ]RS` @c\bS`hÉVZS\ W\ SW\S[ hcaO[[S\USaSbhbS\ /caR`cQY S`T]ZUb ?a^VaP\\ 3TZaT\T]c !) ?aÊUXg=^cPcX^] class Dekrement02 { public static void main(String[] args) { int a = 1; System.out.println(--a); } } ÎQd]VT] id\ ?a^VaP\\ 3TZaT\T]c ! ÎQd]V ( Ò\RS`\ AWS ROa >`]U`O[[ 3TZaT\T]c ! YPeP a] ROaa S`ab RS` OYbcSZZS DO `WOPZS\eS`b OcaUSUSPS\ c\R RO\OQV RWS @SQVS\]^S`ObW]\ OcaUSTºV`b eW`R ÎQd]V !( /\US\][[S\ AWS VOPS\ RS\ hcaO[[S\USaSbhbS\ /caR`cQY ( P RO\\ eW`R hcS`ab SW\S OcT RS\ ES`b RS` DO`WOPZS\ P ORRWS`b c\R S`ab RO\OQV RWS 2WdWaW]\ Rc`QVUSTºV`b 0WbbS bSabS\ AWS RWSaS /\eSWac\U [Wb RS[ >`]U`O[[ 3TZaT \T]c ! ÎQd]V "( 2OUSUS\ eW`R W\ RS[ hcaO[[S\USaSbhbS\ /caR`cQY ' O hcS`ab RWS 2WdWaW]\ Rc`QVUSTºV`b c\R O\aQVZWSzS\R P c[ S`VrVb 0WbbS bSabS\ AWS RWSaS /\ eSWac\U [Wb RS[ >`]U`O[[ 3TZaT\T]c ! c\R dS`UZSWQVS\ AWS RWS 3`USP\WaaS 2Oa T]ZUS\RS >`]U`O[[ RS[]\ab`WS`b SW\S ÉV\ZWQVS /cTUOPS\abSZZc\U 3a hSWUb \]QV SW\[OZ RWS /caeW`Yc\US\ RS` c\bS`aQVWSRZWQVS\ AQV`SWPeSWaS\ PSW[ 7\Y`S[S\bWS`S\ C\R d]` OZZS[ [OQVb Sa RScbZWQV ROaa RWSaS /caR`ºQYS aQVeS` dS`abÉ\RZWQV aW\R c\R RSaeSUS\ PSaaS` dS`[WSRS\ eS`RS\ a]ZZbS\ ?a^VaP\\ 8]ZaT\T]c !) 0dbSa¶RZT bRWfTa eTabcÊ]S[XRW ]XRWc T\_U^W[T] public class Inkrement02 { public static void main(String args[]) { int x = 1; int y = 7 * ++x; // Präfix, Erst erhöhen, dann rechnen System.out.println(y); int z = 7 * x++; // Postfix Erst rechnen, dann erhöhen. System.out.println(z); } }
0SWRS ;cZbW^ZWYObW]\S\ ZOcbS\ % R V W\ PSWRS\ 4ÉZZS\ Wab ROa 3`USP\Wa " B`]bh RS[ Wab RWS EW`Yc\U c\bS`aQVWSRZWQV
(( merker2.doc
Stand: 22.12.2005 13:39:00 ))
& 0dbSa¶RZT eTabcTWT] Tg_aTbbX^]
ÎQd]V id\ ?a^VaP\\ 8]ZaT\T]c ! ÍPS`ZSUS\ AWS eSZQVS\ 7\VOZb RWS DO`WOPZS\ f O[ >`]U`O[[S\RS VOb ÍPS`^`ºTS\ AWS 7V`S ÍPS`ZSUc\U RORc`QV W\RS[ AWS ROa >`]U`O[[ c[ S\ba^`SQVS\RS /caUOPS O\eSWac\US\ S`UÉ\hS\ 1TXb_XT[ id\ =TQT]TUUTZc
2WS 7\Y`S[S\b Phe 2SY`S[S\b=^S`Ob]`S\ VOPS\ \]QV SW\S eSWbS`S 0Sa]\RS`VSWb( aWS PSeW`YS\ SW\S\ <SPS\STTSYb EÉV`S\R SW\ /caR`cQY \]`[OZS`eSWaS ZSRWUZWQV SW\S\ ES`b S`[WbbSZb OPS` YSW\S\ DO`WOPZS\eS`b dS`É\RS`b Sa aSW RS\\ [O\ PS\cbhb OcaR`ºQYZWQV RS\ =^S`Ob]` + Tº` SW\S ES`bShceSWac\U VOPS\ RWS PSa^`]QVS\S\ =^S`Ob]`S\ c\R SW\S heSWTOQVS /caeW`Yc\U( hc[ SW\S\ eW`R RORc`QV SW\ \ScS` ES`b S``SQV\Sb c\R OczS`RS[ a] UO\h \SPS\PSW OZa HcaObhSTTSYb RWSaS` ES`b OcQV RS` PSbSWZWUbS\ DO`WOPZS\ hcUSeWSaS\ ?a^VaP\\ 3TZaT\T]c ") FXT fXaZc STa =TQT]TUUTZc- public class Dekrement03 { public static void main(String args[]) int a = 0; System.out.println(a + 1); System.out.println(a++); } }
{
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(( merker2.doc
Stand: 22.12.2005 13:39:00 ))
& !
0aXcW\TcXbRWT >_TaPc^aT]
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EW` eS`RS\ RWSaS BVS[S\ W\ RS\ \OQVT]ZUS\RS\ 0SWa^WSZS\ RWaYcbWS`S\ Sa eS`RS\ TOZaQVS 0SWa^WSZS UShSWUb OPS` AWS eS`RS\ d]` OZZS[ OcQV RWS Y]``SYbS\ :rac\US\ YS\\S\ ZS`\S\ 3W\S eWQVbWUS @SUSZ UO\h hc /\TO\U( 2S` >`]U`O[[WS`S` a]ZZbS Tº` [ObVS[ObWaQVS 0S`SQV\c\US\ [Wb ES`bO\UOPS\ W\ EÉV`c\US\ h 0 3c`]0Sb`ÉUS\ W[ HeSWTSZ RWS [WbUSZWSTS`bS 9ZOaaS 1XV3TRX\P[ PS \cbhS\ c\R \WQVb [Wb ^`W[WbWdS\ 2ObS\bg^S\ O`PSWbS\ `]U`O[[ a]ZZ ROa 3`USP\Wa Oca ! [cZbW^ZWhWS`b [Wb ! S``SQV\S\ c\R OcaUSPS\ ?a^VaP\\ 0aXcW\TcXZ %) ETabdRW [TXSTa Xbc SPb 4aVTQ]Xb UP[bRW public class Arithmetik06 { public static void main(String args[]) double d2 = 1/3 * 3; System.out.println(d2); } }
{
/Za 3`USP\Wa eW`R OcaUSUSPS\ EO`c[- 2WS 5`c\R Wab( 2S` /caR`cQY eW`R d]\ ZW\Ya \OQV `SQVba SdOZcWS`b 2S` BSWZOcaR`cQY ! PSabSVb Oca 7\bSUS`eS`bS\ RSa eSUS\ Wab ROa 3`USP\Wa RWS 5O\hhOVZ C\R [cZbW^ZWhWS`b [Wb ! S`UWPb 2Oa \ÉQVabS >`]U`O[[ hSWUb SW\S [rUZWQVS :rac\U RWSaSa >`]PZS[a 8Sbhb aW\R OcQV RWS HeWaQVS\S`USP\WaaS Y]``SYb eSWZ RWS =^S`O\RS\ RSa /caR`cQYa RS\ Y]``SYbS\ 2ObS\bg^ VOPS\ ?a^VaP\\ 0aXcW\TcXZ &) ! ETabdRW YTcic Xbc P[[Tb aXRWcXV public class Arithmetik07 { public static void main(String args[])
{ !
(( merker2.doc
Stand: 22.12.2005 13:39:00 ))
& 0dbSa¶RZT eTabcTWT] Tg_aTbbX^]
double d3 = 1d / 3d * 3; System.out.println(d3); } } ÎQd]V id\ ?a^VaP\\ 0aXcW\TcXZ & ÍPS`^`ºTS\ AWS ]P ROa `WQVbWUS 3`USP\Wa OcQV hc S`hWSZS\ Wab Rc`QV T]ZUS\RS /\eSW ac\U( S^dQ[T S" , " "* - & ! " ! ÎQTa[PdU?a^Q[T\T 3W\ eSWbS`Sa >`]PZS[ YO\\ S\babSVS\ eS\\ ROa 3`USP\Wa SW\S` O`WbV[SbWaQVS\ =^S `ObW]\ [Wb 7\bSUS`eS`bS\ hc U`]z Wab Tº` RS\ USeÉVZbS\ 2ObS\bg^ 2O\\ Y][[b Sa hc[ ÍPS`ZOcT d]\ 7\bSUS`ES`bS\ ?a^VaP\\ 0aXcW\TcXZ ')
{
2Oaa W\ RWSaS[ 4OZZ RS` 1][^WZS` YSW\S EO`\c\U UWPb ]RS` a^ÉbSabS\a hc` @c\BW[S SW\ ÍPS`ZOcT4SVZS` US[SZRSb eW`R Wab SW\S ^`]PZS[ObWaQVS AQVeÉQVS W\ 8OdO 3a ZWSUb OZa] W\ RS` DS`O\be]`bc\U RSa >`]U`O[[WS`S`a ROTº` hc a]`US\ ROaa Oca`SW QVS\R A^SWQVS`^ZObh Tº` HeWaQVS\S`USP\WaaS c\R Tº` 3`USP\WadO`WOPZS\ hc` DS`Tº Uc\U abSVb ÎQd]V id\ ?a^VaP\\ 0aXcW\TcXZ ' EWS [caa ROa >`]U`O[[ USÉ\RS`b eS`RS\ RO[Wb ROa 3`USP\Wa Y]``SYb Wab- 5WPb Sa SW\S\ ^`W[WbWdS\ 2ObS\bg^ RSaaS\ ES`bSPS`SWQV U`]z US\cU Wab- :rac\UaVW\eSWa( DS`acQVS\ AWS Sa [Wb [^]V `]U`O[[ RS[]\ab`WS`b eS`RS\ ?a^VaP\\ 0aXcW\TcXZ () ÎQTa[PdU QTX 8]cTVTach_T] public class Arithmetik09 { public static void main(String args[]) long z1 = Long.MAX_VALUE; long z2 = Long.MAX_VALUE; System.out.println(z1);
{
"
(( merker2.doc
Stand: 22.12.2005 13:39:00 ))
& !
0aXcW\TcXbRWT >_TaPc^aT]
System.out.println(z2); System.out.println(z1 * z2); } } 2WS SW\USPOcbS 9]\abO\bS ;^]V <0GNE0;D4 S\bVÉZb RS\ VrQVabS\ ES`b RS\ SW\S DO`WOPZS d][ Bg^ [^]V OcT\SV[S\ YO\\ ES\\ PSWRS 6rQVabeS`bS [cZbW^ZWhWS`b eS` RS\ `SWQVb \Obº`ZWQV RS` >ZObh Tº` ROa HeWaQVS\S`USP\Wa d][ Bg^ [^]V \WQVb Oca ;»bd]V) 0aQTXcT] \Xc :[PbbT] P]bcT[[T e^] _aX\XcXeT] 3PcT]ch_T] ES\\ [Wb HOVZS\ RWSaS` 5`rzS\]`R\c\U USO`PSWbSb eS`RS\ [caa PZSWPb \c` RWS SW\S ;rUZWQVYSWb( [O\ [caa RS\ 9ZOaaS\bg^ 1XV8]cTVTa dS`eS\RS\ 7\abO\hS\ S`hScUS\ c\R ;SbV]RS\ OcT`cTS\ ?a^VaP\\ 0aXcW\TcXZ ) 2[Pbb 1XV8]cTVTa P]bcT[[T e^] [^]VCh_T] import java.math.*; public class Arithmetik10 { public static void main(String args[]) { BigInteger z1 = new BigInteger("1234567890123456"); BigInteger z2 = new BigInteger("9876543210987654"); System.out.println(z1.multiply(z2)); } } & ! " " FPad\ VXQc Tb d]eTabcÊ]S[XRWT 4aVTQ]XbbT QTX\ ÎQTa[PdU. 2Oa T]ZUS\RS >`]U`O[[ Wab Tº` RS\ <ScSW\abSWUS` \WQVb c\PSRW\Ub eWQVbWU /PS` Sa RS[]\ab`WS`b eWS RWS W\bS`\S\ /PZÉcTS PSW RS` /`WbV[SbWY aW\R c\R ZWSTS`b 3`YS\\b \WaaS Tº` RWS 7\bS`^`SbObW]\ d]\ Y`g^bWaQVS\ 3`USP\WaaS\ 2WSaS 7\T]`[ObW]\S\ Yr\\S\ OcQV hc[ `]U`O[[ DTQTa[PdU ZWSTS`b OZa 3`USP\Wa RS` /RRWbW]\ RS` PSWRS\ HOVZS\ ;WZZW]\S\ c\R & ;WZZW]\S\ "'"'$% '$ 2WS C`aOQVS ROTº` Wab ROaa ROa 3`USP\Wa hc U`]aa Wab Tº` RWS ! PWb SW\S` 7\bSUS`dO`WOPZS\ /PS` e]VS` Y][[b RWSaS aSZbaO[S HOVZ RWS hcaÉbhZWQV OcQV \]QV \SUObWd Wab- ?a^VaP\\ DTQTa[PdU ) 4aVTQ]Xb _Pbbc ]XRWc X] " QXcb 8]cTVTach_
public class Ueberlauf01 { public static void main(String args[]) int z1 = 2000000000; int z2 = 1800000000; System.out.println(z1 + z2); } }
{
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(( merker2.doc
Stand: 22.12.2005 13:39:00 ))
& 0dbSa¶RZT eTabcTWT] Tg_aTbbX^]
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(( merker2.doc
Stand: 22.12.2005 13:39:00 ))
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public class Arithmetik11 { public static void main(String args[]) double d1 = 0.17; float f1 = 0.000001f; System.out.println(d1 / f1); System.out.println(d1 * f1); } }
{
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Stand: 22.12.2005 13:39:00 ))
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import java.math.*; public class BigDecimal01 { public static void main(String args[]) { BigDecimal d1 = new BigDecimal("0.17"); BigDecimal d2 = new BigDecimal("0.000001"); System.out.println(d1.divide(d2)); System.out.println(d1.multiply(d2)); } } ÎQd]V id\ ?a^VaP\\ 1XV3TRX\P[ ÍPS`^`ºTS\ AWS ]P RWS /caUOPS RSa >`]U`O[[a OcQV [Wb T]ZUS\RS[ /caUOPSPSTSVZ [rUZWQV Wab( System.out.printf("%s", d1.divide(d2)); & ! " $ Ad]Sd]V STa 4aVTQ]XbbT 8Sbhb PZSWPb \c` \]QV SW\S 4`OUS( C\R eWS Wab Sa [Wb RS[ /cT ]RS` /P`c\RS\ RS` 2ShW[OZabSZZS\- 5S`ORS W[ /ZZbOU c\R W[ YOcT[É\\WaQVS\ 0S`SWQV eW`R [Wb SW\S` dS`SW\PO`bS\ 5S\OcWUYSWb RS` 2ShW[OZabSZZS\ VW\bS` RS[ 9][[O USO`PSWbSb 0SW[ /`PSWbS\ [Wb EÉV`c\US\ VOb ROa 3`USP\Wa \]`[OZS`eSWaS \c` heSW AbSZZS\ VW\bS` RS[ 9][[O RO\OQV eW`R OcT ]RS` OPUS`c\RSb 2WS 9ZOaaS 1XV3TRX\P[ S`ZOcPb RS[ >`]U`O[[WS`S` RWS d]ZZS 9]\b`]ZZS ºPS` RWS dS` aQVWSRS\S\ ;rUZWQVYSWbS\ RSa @c\RS\a 3a UWPb W\aUSaO[b aWSPS\ dS`aQVWSRS\S ;rU ZWQVYSWbS\ 2WSaS aW\R ºPS` YOcT[É\\WaQV `c\RS\ ROa VSWzb eS\\ RS`
(( merker2.doc
Stand: 22.12.2005 13:39:00 ))
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import java.math.BigDecimal; class BigDecimal02 { static public void main(String[] args) { BigDecimal d1 = new BigDecimal(0.17); BigDecimal d2 = new BigDecimal(0.000001); BigDecimal d3 = new BigDecimal(0.0); d3 = d1.divide(d2, 2, BigDecimal.ROUND_HALF_UP); System.out.printf("%s\n", d3); System.out.println(d3); // Alternative Ausgabe // Multiplizieren d3 = d1.multiply(d2); // Anschließend runden BigDecimal d4 = d3.setScale(2, BigDecimal.ROUND_UP); // Ergebnis ausgeben System.out.printf("%s", d4); } } 2Oa T]ZUS\RS >`]U`O[[ Wab SW\ ^`W[WbWdS` 3c`]C[`SQV\S` Sa `SQV\Sb SW\S\ 2; ES`b c[ W\ 3c`] ?a^VaP\\ 4da^ ) ATRW]T] ^W]T SPb 4aVTQ]Xb id ad]ST]
public class Euro01 { public static void main(String args[]) double dm = 100.00; double euro = dm / 1.95583; System.out.println(euro); } }
{
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(( merker2.doc
Stand: 22.12.2005 13:39:00 ))
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import java.math.*; public class Euro02 { public static void main(String args[]) { BigDecimal dm = new BigDecimal("100.00"); BigDecimal kurs = new BigDecimal("1.95583"); BigDecimal euro = dm.divide(kurs,2, BigDecimal.ROUND_HALF_UP); System.out.printf("%s", euro); } }
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import java.math.*; public class BigDecimal03 { public static void main(String[] args) { MathContext def = MathContext.DECIMAL32; BigDecimal start = new BigDecimal(100000); BigDecimal jahre = new BigDecimal(20); BigDecimal zinssatz = new BigDecimal("1.065"); // 6.5% BigDecimal total; total = zinssatz.multiply(jahre).multiply(start); System.out.println("Neues Kapital: " + total.toString()); } }
!
(( merker2.doc
Stand: 22.12.2005 13:39:00 ))
& "
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(( merker2.doc
Stand: 22.12.2005 13:39:00 ))
& 0dbSa¶RZT eTabcTWT] Tg_aTbbX^]
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public class Vergleich03 { public static void main(String[] args) { char z1 = 'a'; char z2 = 'b'; System.out.println(z1 = z2); } } ÎQd]V id\ ?a^VaP\\ ETaV[TXRW " 2Oa >`]U`O[[ UWPb RS\ 0cQVabOPS\ P Oca 3`YZÉ`S\ AWS eO`c[ RWSa a] Wab c\R Y]` `WUWS`S\ AWS ROa >`]U`O[[ a] ROaa RS` DS`UZSWQV Y]``SYb OcaUSTºV`b eW`R D]`aWQVb Wab USP]bS\ PSW[ DS`UZSWQV d]\ 5ZSWbY][[OhOVZS\ 2c`QV RS\ ESQVaSZ RSa AbSZZS\eS`bagabS[a YO\\ Sa hc C\US\OcWUYSWbS\ Y][[S\ ?a^VaP\\ ETaV[TXRW #) ETaV[TXRW e^] 6[TXcZ^\\PiPW[T]
public class Vergleich04 { public static void main(String[] args) float zahl1 = 0.1f; zahl1 = zahl1 / 0.0001f; System.out.println(zahl1 == 1000); System.out.println(zahl1); } }
{
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(( merker2.doc
Stand: 22.12.2005 13:39:00 ))
& "
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public class Vergleich05 { public static void main(String[] args) { String s1 = new String("Hallo"); String s2 = new String("Hallo"); System.out.println(s1 == s2); } } 0SWRS =PXSYbS S\bVOZbS\ RWS UZSWQVS\ 2ObS\ b`]bhRS[ eW`R OZa 3`USP\Wa RSa DS` UZSWQVa UP[bT OcaUSUSPS\ EWS Y][[b ROa- 2WS /\be]`b( 8OdO O`PSWbSb ab`S\U Z]UWaQV Sa eS`RS\ \É[ZWQV RWS PSWRS\ @STS`S\hdO`WOPZS\ b c\R b! dS`UZWQVS\
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(( merker2.doc
Stand: 22.12.2005 13:39:00 ))
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public class Vergleich06 { public static void main(String[] args) { String s1 = new String("Hallo"); String s2 = new String("Hallo"); System.out.println(s1.equals(s2)); } } 8Sbhb ZOcbSb ROa 3`USP\Wa cadT 0SWRS =PXSYbS aW\R W\VOZbZWQV UZSWQV 4OhWb( 2WS =^S`Ob]`S\ Tº` HceSWac\US\ + c\R Tº` RS\ BSab OcT 5ZSWQVVSWb ++ eW` YS\ OcT RWS ES`bS RS` =^S`O\RS\ 2Oa PSRScbSb( aW\R RWS =^S`O\RS\ @STS`S\hdO`W OPZS\ eW`YS\ aWS OcT RS\ @STS`S\heS`b 7\ RS\ [SWabS\ 4ÉZZS\ S\ba^`WQVb ROa \WQVb RS` /cTUOPS\abSZZc\U RSaVOZP [ºaaS\ Tº` @STS`S\hS\ ;SbV]RS\ OcTUS`cTS\ eS`RS\
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(( merker2.doc
Stand: 22.12.2005 13:39:00 ))
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(( merker2.doc
Stand: 22.12.2005 13:39:00 ))
& # ;^VXbRWT >_TaPc^aT]
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(( merker2.doc
Stand: 22.12.2005 13:39:00 ))
& 0dbSa¶RZT eTabcTWT] Tg_aTbbX^]
ÎQd]V U¶a QX]ÊaT ETaZ]¶_Ud]VT] 2Oa >`]U`O[[ ;^VXZ ! a]ZZ RWS T]ZUS\RS /cTUOPS ZraS\( 4º` OZZS ES`bS RWS heW aQVS\ c\R & ' ZWSUS\ a]ZZ ROa >`]U`O[[ cadT ZWSTS`\ ;»bd]Vbe^abRW[PV) ?a^VaP\\ ;^VXZ !
FTacTQTaTXRWT PQUaPVT] class Logik02 { public static void main(String[] args) { int x = 85; boolean richtigeZahl = ((x>0 && x<10) || (x>80 && x<90)); System.out.println(richtigeZahl); } }
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FTacTQTaTXRW PdbbRW[XTvT] class Logik03 { public static void main(String[] args) { int x = 85; boolean richtigeZahl = !((x>0 && x<10) || (x>80 && x<90)); System.out.println(richtigeZahl); } }
2WS SW\hWUS Ò\RS`c\U RWS \]beS\RWU Wab W[ DS`UZSWQV hc[ >`]U`O[[ ;^VXZ ! Wab RWS C[YSV`c\U RSa EOV`VSWbaeS`bSa RS` 5SaO[bOcaaOUS c\R RWSa S`T]ZUb Rc`QV 1]RWS`c\U RSa <=B=^S`Ob]`a /ca`cTc\UahSWQVS\ \WQVb hc dS`eSQVaSZ\ [Wb RS[ SW\TOQVS\ aS\Y`SQVbS\ Ab`WQV !&
(( merker2.doc
Stand: 22.12.2005 13:39:00 ))
& # ;^VXbRWT >_TaPc^aT]
2WS <SUObW]\ W\ Y][^ZSfS\ 0SRW\Uc\US\ Wab [O\QV[OZ aQVeS` dS`abÉ\RZWQV 3W\ 0SWa^WSZ Wab T]ZUS\RS @SUSZ( ES\\ OcT SW\S[ 4ZcUbWQYSb \WQVb SW\ / ]RS` SW\ 0 abSVb c\R eS\\ ROa 2Obc[ \WQVb ]RS` Wab RO\\ Wab RS` 4ZcU \WQVb USQO\QSZb EWS PWbbS- EO\\ TW\RSb RS` 4ZcU abObb- ?a^VaP\\ 0dbSadRZ ") =TVXTacT CTX[PdbbPVT] eTaZ]¶_UT] class Ausdruck03 { public static void main(String[] args) { char ticket = 'C'; int datum = 13; if (!(ticket == 'A') || !(ticket == 'B') && (datum == 11 || datum == 12)) System.out.println("Kein Flug"); else System.out.println("Flug"); } } 3W\S D\U^a\d[XTad]V W\ SW\S ^]aWbWdS /caaOUS [OQVb ROa >`]U`O[[ dS`abÉ\RZW QVS`( 2S` 4ZcU TW\RSb abObb eS\\ OcT RS[ BWQYSb / ]RS` 0 c\R OZa 2Obc[ ]RS` abSVb 3W\ UºZbWUSa BWQYSb YO\\ OZa] SW\S RS` T]ZUS\RS dWS` 9][PW\ObW]\S\ S\bVOZbS\( / / 0 ]RS` 0 /ZZS O\RS`S\ aW\R c\UºZbWU ?a^VaP\\ 0dbSadRZ #) ?^bXcXeT CTX[PdbbPVT] eTaZ]¶_UT] class Ausdruck04 { public static void main(String[] args) { char ticket = 'B'; int datum = 12; if ((ticket == 'A' || ticket == 'B') && (datum == 11 || datum == 12)) System.out.println("Flug"); else System.out.println("Kein Flug"); } } 2WS @SUSZ Tº` RWS C[T]`[c\U \S\\b [O\ RWS ST <^aVP]bRWTATVT[( Oca ((not (a or b) eW`R Oca (not (a and b)) eW`R
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(( merker2.doc
Stand: 22.12.2005 13:39:00 ))
& 0dbSa¶RZT eTabcTWT] Tg_aTbbX^]
;^VXZPdUVPQT Hc` DS`bWSTc\U RSa BVS[Oa /`PSWbS\ [Wb Z]UWaQVS\ =^S`Ob]`S\ eS`RS\ AWS XSbhb SW\ Y][^ZSbbSa 0SWa^WSZ ZraS\ 2WS 0dUVPQT]bcT[[d]V Wab eWS T]ZUb( 8cZWO ^ZO\b WV`S >O`bg 2WSaS a]ZZ OPS` \c` abObbTW\RS\ eS\\ T]ZUS\RS 0SRW\Uc\US\ S`TºZZb aW\R( ES\\ /\R`SOa / Y][[b RO\\ [caa OcQV 0S`\R0 Y][[S\ 3\beSRS` Y][[S\ /\R`SOa/ c\R 1V`WabWO\1 ]RS` Sa Y][[b YSW\S` d]\ PSW RS\ ! 3\beSRS` Y][[b 0S`\R ]RS` 1V`WabWO\ 2WS >O`bg TW\RSb \c` abObb eS\\ OZZS R`SW 0SRW\Uc\US\ S`TºZZb aW\R 2Oa VSWzb RWS R`SW BSWZ/caaOUS\ [ºaaS\ eOV` aSW\ RO[Wb RWS 5SaO[bOcaaOUS eOV` Wab 0WbbS T]` [cZWS`S\ AWS RS\ /caR`cQY c\R Q]RWS`S\ AWS O\aQVZWSzS\R SW\ 8OdO>`]U`O[[ ROa RWSaS /cTUOPS Zrab :rac\UaVW\eSWa( 3a a]ZZ ZSRWUZWQV [Wb RS\ Z]UWaQVS\ =^S`Ob]`S\ C<2 =23@ c\R <716B USO`PSWbSb eS`RS\ ;»bd]Vbe^abRW[PV U¶a SXT U^a\P[T 1TbRWaTXQd]V STa 1TSX]Vd]VT]) BSWZOcaaOUS( <716B/ =23@ / C<2 0 BSWZOcaaOUS( / C<2 1 =23@ <716B/ C<2 <716B1 ! BSWZOcaaOUS( 0 C<2 <716B1 =23@ <716B0 C<2 1 ?a^VaP\\ ;^VXZ #) ;»bd]V R^SXTac X] 9PeP class Logik04 { public static void main(String[] args) { boolean andreas = true; // Andreas kommt boolean bernd = false; // Bernd kommt nicht boolean christian = true; // Christian kommt boolean party = ((!andreas || andreas && bernd)) && ((andreas && christian) || (!andreas && !christian)) && ((bernd && !christian) || (!bernd && christian)); System.out.println(party); } }
2Oa 3`USP\Wa Wab UP[bT R V RWS >O`bg TW\RSb \WQVb abObb RS\\ PS`SWba RWS S`abS BSWZOca aOUS Wab \WQVb S`TºZZb EWQVbWU Tº` RWS 4]`[cZWS`c\U RS` :rac\U W\ 8OdO Wab ROaa RWS >`W]`WbÉb RS` =^S`Ob]`S\ PSYO\\b Wab( <=B OZa c\É`S` =^S`Ob]` PSaWbhb RWS VrQVabS >`W]`WbÉb RO\OQV UWZb RWS CD=@SUSZ( D\R e]` >RS` 2WS R`W\US\RS 3[^TSVZc\U Wab W[[S` 9ZO[[S`\ hc aSbhS\ 2O[Wb eS`RS\ SdS\bcSZ ZS C\aWQVS`VSWbS\ OcaUSaQVZ]aaS\ c\R RWS :SaPO`YSWb d]\ /caaOUS\ PSa]\RS`a W\ RWSaS` 9][^ZSfWbÉb SW\RScbWU dS`PSaaS`b "
(( merker2.doc
Stand: 22.12.2005 13:39:00 ))
& # ;^VXbRWT >_TaPc^aT]
ÎQd]V id\ ?a^VaP\\ ;^VXZ # 0WbbS É\RS`\ AWS RWS 0]]ZSO\ES`bS a] ROaa RWS >O`bg abObbTW\RS\ YO\\ :rac\Ua VW\eSWa( 8cZWO [rQVbS [Wb 0S`\R OZZSW\ aSW\ R V RWS PSWRS\ O\RS`S\ [ºaaS\ UP[bT PSY][[S\ :daibRW[dbb0dbfTacd]V BW^ac2XaRdXc4eP[dPcX^] 2WS Z]UWaQVS\ =^S`Ob]`S\ /<2 c\R jj =@ eS`RS\ OcQV OZa AV]`b1W`QcWb 3dOZcObW]\=^S`Ob]`S\ PShSWQV\Sb RS\\ RS` /caR`cQY eW`R \c` a]ZO\US OcaUSeS` bSb PWa ROa 3`USP\Wa SW\RScbWU TSababSVb 2WS 0S`SQV\c\U eW`R a]T]`b PSS\RSb eS\\ YZO` Wab eSZQVS` Z]UWaQVS ES`b aWQV S`UWPb A] YO\\ Sa ^OaaWS`S\ ROaa SW\ `SQVba abS VS\RS` BSWZOcaR`cQY \WQVb [SV` OcaUSeS`bSb eW`R eSWZ S` Tº` ROa 5SaO[bS`USP\Wa YSW\S 0SRScbc\U [SV` VOb 0SWa^WSZ( ES\\ PSW DS`Y\º^Tc\U TX] BSWZOcaR`cQY UP[bT ZWSTS`b \dbb RS` 5SaO[bOcaR`cQY OcQV UP[bT eS`RS\ SUOZ eOa \]QV O\ eSWbS `S\ BSWZOcaR`ºQYS\ T]ZUb 7[ 5SUS\aObh hc RWSaS` /`PSWbaeSWaS UWPb Sa W\ 8OdO \]QV RWS T]ZUS\RS\ Z]UWaQVS\ =^S`Ob]`S\ RWS W[[S` c\R W\ XSRS[ 4OZZ RS\ USaO[bS\ /caR`cQY OcaeS`bS\( • •
+ ROa SW\TOQVS c\R \WQVb R]^^SZbS /[^S`aO\R Tº` RWS C<2DS`Y\º^Tc\U j + RS` SW\TOQVS c\R \WQVb R]^^SZbS Ab`WQV Tº` RWS =23@DS`PW\Rc\U
2WSaS PSWRS\ =^S`Ob]`S\ eS`RS\ OcQV OZa \]\A13 \WQVbAV]`b1W`QcWb3dOZcObW]\ =^S`Ob]`S\ PShSWQV\Sb eSWZ RWS 3dOZcWS`c\U RSa /caR`cQYa \WQVb OPUSP`]QVS\ eW`R OcQV eS\\ RWS eSWbS`S /caeS`bc\U YSW\S @]ZZS [SV` Tº` ROa 5SaO[bS`USP\Wa VOb 2WSaS /`b RS` 3dOZcWS`c\U Wab \Obº`ZWQV OcTeÉ\RWUS` OZa RWS \]`[OZS\ Z]UWaQVS\ /caR`ºQYS EO`c[ YO\\ Sa b`]bhRS[ aW\\d]ZZ aSW\ [Wb RWSaS\ =^S`Ob]`S\ hc O`PSW bS\- ?a^VaP\\ BRT ) BW^ac2dc4eP[dPcX^] B24 \Xc D=3>_TaPc^a public class Sce01 { public static void main(String args[]) boolean b1 = false; long z2 = 11; System.out.println(b1 && z2++ > 5); System.out.println(z2); } }
{
/Za 3`USP\Wa eW`R OcaUSUSPS\ ROaa RS` 5SaO[bOcaR`cQY UP[bT Wab c\R ROaa RS` 7\VOZb RS` DO`WOPZS\ i! c\dS`É\RS`b PSW USPZWSPS\ Wab ÎQd]V id\ ?a^VaP\\ BRT Ò\RS`\ AWS RS\ Z]UWaQVS\ C<2=^S`Ob]` OP a] ROaa RS` /caR`cQY OcT XSRS\ 4OZZ Y][^ZSbb OcaUSeS`bSb eW`R 8Sbhb [caa RS` ES`b RS` DO`WOPZS\ i! aWQV dS`É\RS`b VO PS\ "
(( merker2.doc
Stand: 22.12.2005 13:39:00 ))
& 0dbSa¶RZT eTabcTWT] Tg_aTbbX^]
2Oa \ÉQVabS 0SWa^WSZ hSWUb SW\S ÉV\ZWQVS /cTUOPS\abSZZc\U 2c`QV RS\ Z]UWaQVS\ =^S`Ob]` jj eW`R RWS /caeS`bc\U OPUSP`]QVS\ eS\\ ROa 3`USP\Wa heSWTSZaT`SW TSab abSVb ?a^VaP\\ BRT !) BW^ac2dc4eP[dPcX^] B24 \Xc >34A>_TaPc^a public class Sce02 { public static void main(String args[]) throws Exception int a = 0; if (a==0 || (a = System.in.read()) > 0) System.out.println(a); } }
{
2WS aTPS;SbV]RS eW`R \WQVb OcaUSTºV`b eSWZ PS`SWba RS` S`abS BSWZOcaR`cQY S`TºZZb Wab PSW =23@ US\ºUb ROa ÎQd]V id\ ?a^VaP\\ BRT ! Ò\RS`\ AWS ROa >`]U`O[[ a] OP ROaa W\ XSRS[ 4OZZ OcQV RS` 3W\ZSaSd]`UO\U abObb TW\RSb
(OZ]KOYK5VKXGZUXKT
3a UWPb W\ 8OdO =^S`Ob]`S\ RWS OcT 0WbSPS\S O`PSWbS\ ]Pe]VZ \]`[OZS`eSWaS ROa 0gbS & PWba RWS YZSW\abS OR`SaaWS`PO`S 3W\VSWb Wab ;Wb 6WZTS RWSaS` PWbeSWaS\ =^S`Ob] `S\ YO\\ [O\ RWS SW\hSZ\S\ 0Wba dS`aQVWSPS\ aVWTbS\ ]RS` Z]UWaQV dS`Y\º^TS\
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(( merker2.doc
Stand: 22.12.2005 13:39:00 ))
& $
1XcfTXbT >_TaPc^aT]
System.out.println(zeichen2); System.out.println(zeichen3); } } 4º` RWS 7\bS`^`SbObW]\ RS` 3`USP\WaaS ! c\R ! eW`R RWS C\WQ]RSBOPSZZS PS\r bWUb 2S` 0cQVabOPS / eW`R eWS T]ZUb Q]RWS`b(
VSf " OZa X]cES`b `SW\ PW\É`( ! OZa X]cES`b `SW\ PW\É`( !
(OToXK
Z]UWaQVS C<2DS`Y\ºTc\U Z]UWaQVS =23@DS`Y\º^Tc\U
L Z]UWaQVS F=@DS`Y\º^Tc\U l Z]UWaQVSa <=B 3W\S`Y][^ZS[S\b OZZS PWba eS`RS\ W\dS`bWS`b 2Oa 3`USP\Wa SW\S` a]ZQVS\ PWbeSWaS\ DS`Y\º^Tc\U Wab SW\ X]cES`b + `SW\ PW\É` ?a^VaP\\ 1XcETaZ]dT_U ) 4X]iT[]T 1Xcb [^VXbRW eTaZ]¶_UT]
class BitVerknuepf01 { public static void main(String[] args) char zeichen1 = 'A'; char zeichen2 = 'B'; int erg;
{
erg = zeichen1 & zeichen2; System.out.print(erg + " = "); System.out.println((char)erg);
// UND
erg = zeichen1 | zeichen2; System.out.print(erg + " = "); System.out.println((char)erg);
// ODER
erg = zeichen1 ^ zeichen2; System.out.print(erg + " = "); System.out.println((char)erg);
// XOR
} } "!
(( merker2.doc
Stand: 22.12.2005 13:39:00 ))
& 0dbSa¶RZT eTabcTWT] Tg_aTbbX^]
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?a^VaP\\ 1XcETaZ]dT_U !) =^c>_TaPc^a U¶a :^\_[T\T]c1X[Sd]V class Bitverknuepf02 { public static void main(String[] args) byte b = 3; System.out.println(~b); } }
{
2WS /caUOPS RSa >`]U`O[[a Wab " RS\\
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S\ba^`WQVb ! 9][^ZS[S\b S\ba^`WQVb " 3`ZÉcbS`c\U aWSVS 9O^ % ! !
ÎQd]V id\ ?a^VaP\\ 1XceTaZ]dT_U ! ÎQd]V ( <]bWS`S\ AWS Tº` aWQV OcT SW\S[ 0ZObb >O^WS` eWS RWSaSa 3`USP\Wa hc AbO\RS USY][[S\ Wab :rac\UaVW\eSWa( 2S` ES`b eW`R OZa \SUObWdS HOVZ W\bS`^`SbWS`b RO \OQV ROa 9][^ZS[S\b USPWZRSb c\R RO`OcT SW\S ORRWS`b ÎQd]V !( EO`c[ eS`RS\ RWS =^S`Ob]`S\ Phe j W\ PSabW[[bS\ /\eSWac\US\ OZa Z]UWaQVS =^S`Ob]`S\ c\R W\ O\RS`S\ /\eSWac\US\ OZa PWbeSWaS DS`Y\º^Tc\Ua]^S`O b]`S\ PSVO\RSZb- :rac\UaVW\eSWa( RWSa VÉ\Ub OP d]\ RS[ 2ObS\bg^ RS` =^S`O\RS\ ""
(( merker2.doc
Stand: 22.12.2005 13:39:00 ))
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?a^VaP\\ ?aX^aXcPTc ) 1TXb_XT[ U¶a d]cTabRWXTS[XRWT ?aX^aXcÊcT] class Prioritaet01 { public static void main(String[] args) { int x = 5; int y = 9; System.out.println(x + 15 / 5); System.out.println(x != 6 && y < 8); System.out.println(x == 5 ^ y > 0); System.out.println(x < 3 || y == 5); } } ?a^VaP\\ ?aX^aXcPTc !) 1TXb_XT[ ! U¶a d]cTabRWXTS[XRWT ?aX^aXcÊcT] class Prioritaet02 { public static void main(String[] args) { System.out.println(2 + 15 / 3 < 7 && 5 < 3); } } 2S` /caR`cQY W[ >`]U`O[[ ?aX^aXcPTc ! YPeP PSabSVb Oca heSW BSWZOcaR`ºQYS\ RWS aS aW\R [Wb RS[ Z]UWaQVS\ C<2 dS`Y\º^Tb 2Oa 3`USP\Wa Wab UP[bT eSWZ RS` S`abS BSWZ OcaR`cQY ! # * % TOZaQV Wab 2c`QV RS\ 3W\aObh d]\ 9ZO[[S`\ Yr\\S\ RWSaS @SUSZ\ c[UO\US\ eS`RS\ 3a eW`R OPS` R`W\US\R S[^T]VZS\ RWS 9ZO[[S`\ OcQV hc dS`eS\RS\ eS\\ RWS \]`[OZS /caeS`bc\Ua`SWVS\T]ZUS c\dS`É\RS`b USZbS\ a]ZZ RO[Wb :SaPO`YSWb dS`PSaaS`b eW`R "#
(( merker2.doc
Stand: 22.12.2005 13:39:00 ))
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(( merker2.doc
Stand: 22.12.2005 13:39:00 ))
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(( merker2.doc
Stand: 22.12.2005 13:39:00 ))
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?a^VaP\\ ;^ZP[ ) 0aQTXcT] \Xc [^ZP[T] EPaXPQ[T] 5TW[TaWPUc public class Lokal01 { public static void main(String[] a) { int zahl1 = 10; "&
(( merker2.doc
Stand: 22.12.2005 13:39:00 ))
'
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{ int zahl2 = 5; System.out.println(zahl2++); } System.out.println(zahl1 + zahl2); } } ÎQd]VT] \Xc ?a^VaP\\ ;^ZP[ ÎQd]V ( 0WbbS Y]``WUWS`S\ AWS RS\ 4SVZS` 6W\eSWaS hc` C`aOQVS aWSVS d]`VS`WUS\ /PaObh( 0Z]QYPWZRc\U c\R Z]YOZS DO`WOPZS\ ÎQd]V !) 9ZÉ`S\ AWS Rc`QV >`]U`O[[É\RS`c\U RWS 4`OUS ]P RS` DO`WOPZS\\O[S iPW[ OcQV W\\S`VOZP RSa 0Z]QYa h 0 W\ RS` _aX]c[];SbV]RS PS\cbhb eS`RS\ RO`T 2WS 3`YS\\b\Wa Oca RWSaS\ ÍPc\US\ Wab ROaa SW\ /\eSWac\UaPZ]QY RS\ 5ºZbWUYSWba PS`SWQV d]\ DO`WOPZS\ RSTW\WS`b 7ab SW\S DO`WOPZS W\ SW\S[ 0Z]QY RSTW\WS`b a] Wab aWS \c` R]`b UºZbWU AWS YO\\ OczS`VOZP RWSaSa 0Z]QYa \WQVb O\USa^`]QVS\ eS`RS\ ;O\ \S\\b RWSaS DO`WOPZS Z]YOZS DO`WOPZS 0Z]QYa Yr\\S\ PSZWSPWU USaQVOQVbSZb eS`RS\ /ZZS`RW\Ua [ºaaS\ W\\S`VOZP SW\S` ;S bV]RS RWS 0ShSWQV\S` RS` Z]YOZS\ DO`WOPZS\ SW\RScbWU aSW\ R V SW\ SW\[OZ RSYZO`WS` bS` 0ShSWQV\S` RO`T \WQVb \]QV SW\[OZ RSYZO`WS`b eS`RS\ OcQV \WQVb W\ SW\S[ C\bS` PZ]QY
9ZK[KXGT]KOY[TMKT ;Wb 6WZTS d]\ AbScS`O\eSWac\US\ YO\\ RS` >`]U`O[[WS`S` RS\ /PZOcT RSa >`] U`O[[a abScS`\ 3a UWPb AbScS`O\eSWac\US\ Tº` DS`heSWUc\US\ XU c\R bfXcRW c\R Tº` RWS AQVZSWTS\PWZRc\U U^a fWX[T S^ AWS aW\R SPS\TOZZa hcaO[[S\USaSbhbS /\ eSWac\US\ RS\\ aWS S\bVOZbS\ O\RS`S /\eSWac\US\ RWS RO\\ S\beSRS` aSZSYbWd UO` \WQVb eSWZ RWS 0SRW\Uc\U \WQVb S`TºZZb Wab ]RS` SW\[OZ Phe [SV`[OZa OcaUS TºV`b eS`RS\ eS\\ RWS ROTº` \]beS\RWUS 0SRW\Uc\U S`TºZZb Wab /ZZS\ AbScS`O\eSWac\US\ US[SW\aO[ Wab ROaa RS` eSWbS`S /PZOcT RSa >`]U`O[[a d]\ SW\S[ /caR`cQY USabScS`b eW`R RS` d][ Bg^ Q^^[TP] aSW\ [caa ?a^VaP\\ 0]fTXbd]V ) 1^^[TbRWTa 0dbSadRZ X\ XU1TUTW[ class Anweisung01 { public static void main(String[] args) { if (5 > 3) System.out.println("5 ist groesser als 3"); } }
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(( merker2.doc
Stand: 22.12.2005 13:39:00 ))
' 0]fTXbd]VT] Z^SXTaT] bcPcT\T]cb
2S` 740STSVZ PSUW\\b [Wb RS[ AQVZºaaSZe]`b XU 2O\\ T]ZUb W\ `c\RS\ 9ZO[[S`\ SW\ /caR`cQY RS` OZa 3`USP\Wa SW\S\ P]]ZSaQVS\ ES`b ZWSTS`b XO ]RS` \SW\ 7[ 0SWa^WSZ S\bVÉZb RWS XU/\eSWac\U RO\OQV SW\S eSWbS`S /\eSWac\U \É[ZWQV RS\ /cT`cT SW\S` _aX]c[];SbV]RS 2WSaS` 0Z]QY eW`R \c` OcaUSTºV`b eS\\ RS` P]]ZSaQVS /caR`cQY cadT ZWSTS`b /cT XSRS\ 4OZZ Wab RS` USaO[bS 740STSVZ S`ab \OQV RS[ AS[WY]Z]\ PSS\ RSb 2Oa AS[WY]Z]\ aQVZWSzb VWS` ROa AbObS[S\b [Wb RS[ ;SbV]RS\OcT`cT OP Hc aO[[S\USaSbhbS /\eSWac\US\ W\ RWSaS[ 4OZZ OZa] ROa XUAbObS[S\b aSZPab eS`RS\ ]XRWc [Wb SW\S[ AS[WY]Z]\ OPUSaQVZ]aaS\ ?a^VaP\\ 0]fTXbd]V !) 0]fTXbd]VbQ[^RZ P]bcT[[T STa 4X]iT[P]fTXbd]V class Anweisung02 { public static void main(String[] args) { if (5 > 3) { System.out.println("Das Ergebnis der Prüefung ist: "); System.out.println("Fuenf ist groesser als 3"); } } } 7\ RS[ >`]U`O[[ 0]fTXbd]V ! PSabSVb RS` 8OHeSWU RS` XU/\eSWac\U Oca [SV` OZa SW\S` /\eSWac\U 2SaeSUS\ [caa SW\ /\eSWac\UaPZ]QY USPWZRSb eS`RS\ RS` Rc`QV RWS USaQVeSWTbS\ 9ZO[[S`\ hcaO[[S\USVOZbS\ eW`R 2S` USaO[bS 740STSVZ Wab \OQV RWSaS[ 0Z]QY PSS\RSb 3a eW`R O[ 3\RS YSW\ AS[WY]Z]\ USaSbhb
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class Zuweisung01 { public static void main(String[] args) { int zahl = 15; // Initialisierung System.out.println("Vorher: " + zahl); zahl = 1; // Wertezuweisung System.out.println("Nachher: " + zahl); } } @SQVba d][ 5ZSWQVVSWbahSWQVS\ abSVb RS` AS\RS` ZW\Ya d][ 5ZSWQVVSWbahSWQVS\ abSVb RS` 3[^TÉ\US` 2S` AS\RS` Wab SW\ /caR`cQY OZa] SW\S DO`WOPZS 9]\abO\bS ]RS` SW\ ;SbV]RS\OcT`cT ]RS` SW\S PSZWSPWUS 9][PW\ObW]\ RO`Oca 2S` 3[^TÉ\US` YO\\ \c` Oca SW\S` DO`WOPZS\ PSabSVS\ R V d]` RS[ 5ZSWQVVSWbahSWQVS\ abSVb RS` #
(( merker2.doc
Stand: 22.12.2005 13:39:00 ))
' !
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7RS\bWTWS` RS` DO`WOPZS\ RWS RS\ \ScS\ ES`b RSa /caR`cQYa PSY][[b 2S` PWaVS`WUS ES`b RS` DO`WOPZS\ eW`R Z^\_[Tcc S`aSbhb Rc`QV RS\ SdOZcWS`bS\ ES`b RSa /caR`cQYa Hc` EWSRS`V]Zc\U \]QV SW\[OZ RS` 6W\eSWa( SW\ /caR`cQY PS`SQV\Sb TX]T] c\R \c` SW\S\ ES`b ?a^VaP\\ IdfTXbd]V !) 4X] 0dbSadRZbfTac fXaS TeP[dXTac d]S idVTfXTbT] class Zuweisung02 { public static void main(String[] args) { int zahl = 15; System.out.println("Vorher: " + zahl); zahl = (1 + 6) / 2; System.out.println("Nachher: " + zahl); } } 8SRS` /caR`cQY VOb OZa] \c` TX]T] ES`b 7[ 0SWa^WSZ IdfTXbd]V ! YPeP Wab RWSaS` heSWTSZZ]a d][ 2ObS\bg^ X]c RS\\ OZZS =^S`O\RS\ RWSaSa AbObS[S\ba VOPS\ RS\aSZ PS\ Bg^ c\R Sa UWPb RSaeSUS\ OcQV YSW\S`ZSW /\^Oaac\Ua^`]PZS[S 2O[Wb Wab OcQV UZSWQVhSWbWU RS` 2ObS\bg^ RSa /caR`cQYa TSabUSZSUb 2WSaS` 2ObS\bg^ RSa AS\RS` /caR`cQYa [caa ºPS`SW\abW[[S\ [Wb RS[ 2ObS\bg^ RS` 3[^TÉ\US`dO`WOPZS\ EOa ^OaaWS`b OPS` eS\\ •
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RWS =^S`O\RS\ RSa /caR`cQYa c\bS`aQVWSRZWQVS 2ObS\bg^S\ VOPS\-
D]cTabRWXTS[XRWT 3PcT]ch_T] QTX BT]STa d]S 4\_UÊ]VTa 5S\S`SZZ YO\\ RS` 3[^TÉ\US` \c` 2ObS\ a^SWQVS`\ RWS [Wb aSW\S[ Bg^ ºPS`SW\ abW[[S\ 2SaeSUS\ eW`R RS` 2ObS\bg^ RSa /caR`cQYa O\ RS\ Bg^ RSa 3[^TÉ\US`a O\US^Oaab OZZS`RW\Ua \c` eS\\ RORc`QV \WQVb RWS 5STOV` PSabSVb ROaa 7\T]`[ObW] \S\ dS`Z]`S\ USVS\ W[^ZWhWbS Bg^c[eO\RZc\U /\RS`\TOZZa UWPb Sa 4SVZS` PSW RS` C[eO\RZc\U ?a^VaP\\ IdfTXbd]V ") D\fP]S[d]VbUTW[Ta fTVT] UP[bRWTa IdfTXbd]V public class Zuweisung03 { public static void main(String args[]) { int zahl1 = 10; short zahl2 = 5; zahl2 = zahl1; zahl1 = zahl2; } } #
(( merker2.doc
Stand: 22.12.2005 13:39:00 ))
' 0]fTXbd]VT] Z^SXTaT] bcPcT\T]cb
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public class Zuweisung04 { public static void main(String args[]) float s1 = 5.0; } }
{
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public class Zuweisung05 { public static void main(String args[]) { String str = "Bahnhofstr."; int nr = 125; System.out.println(str + nr); } } 0SW[ /cT`cT RS` ;SbV]RS _aX]c[] eS`RS\ heSW /`Uc[S\bS ºPS`USPS\ SW\ BcaX]V /`Uc[S\b c\R SW\ X]c/`Uc[S\b 2WS ES`bS [ºaaS\ UZSWQV\O[WU US[OQVb eS`RS\ RS\aSZPS\ Bg^ PSY][[S\ c\R RWSa USaQVWSVb Ocb][ObWaQV ]V\S Sf^ZWhWbS /\UOPS Rc`QV RS\ >`]U`O[[WS`S` eSWZ YSW\ 7\T]`[ObW]\adS`Zcab RORc`QV S\babSVb
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(( merker2.doc
Stand: 22.12.2005 13:39:00 ))
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public class Zuweisung06 { public static void main(String args[]) { int x = 1; int y = 10; x += 13; // x = x + 13; System.out.println(x); y *= y + 5; // y = y * (y + 5); System.out.println(y); } } =Pe]VZ ROa /`PSWbS\ [Wb RWSaS\ Y][PW\WS`bS\ =^S`Ob]`S\ hc SW\S` dS`Yº`hbS\ AQV`SWPeSWaS TºV`b eW`R RS` 3W\aObh \WQVb S[^T]VZS\ eSWZ RWS :SaPO`YSWb RO`c\bS` ZSWRSb 2WSa RS[]\ab`WS`b PSa]\RS`a RWS d]`ZSbhbS HSWZS RSa >`]U`O[[a IdfTX bd]V % YPeP
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public class Zuweisung07 { public static void main(String args[]) { int x = 1; int y = 10; x = y = 0; System.out.println("x= " + x + " y= " + y); } } 4º` RWSaS 1]RWS`c\U Wab SW\S eWQVbWUS 0Sa]\RS`VSWb hc PSOQVbS\( RWS @SWVS\T]ZUS RS` /caTºV`c\U Wab \WQVb eWS a]\ab OZZUS[SW\ ºPZWQV d]\ ZW\Ya \OQV `SQVba a]\RS`\ #!
(( merker2.doc
Stand: 22.12.2005 13:39:00 ))
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(( merker2.doc
Stand: 22.12.2005 13:39:00 ))
' #
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(( merker2.doc
Stand: 22.12.2005 13:39:00 ))
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public class If01 { public static void main(String args[]) throws Exception if (5 < 3) { System.out.println("5 ist kleiner 3"); } else { System.out.println("5 ist nicht kleiner als 3"); } } }
{
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(( merker2.doc
Stand: 22.12.2005 13:39:00 ))
' #
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public class If02 { public static void main(String args[]) { char c = 'A'; if (Character.isUpperCase(c)) { System.out.println("Der Zeichen " + c + " ist ein Grossbuchstabe"); } } } ?a^VaP\\ 8U ") 1TXb_XT[ U¶a ifTXbTXcXVT 850]fTXbd]V public class If03 { public static void main(String args[]) { char c = 'a'; if (Character.isUpperCase(c)) { System.out.println("Der Zeichen " + c + " ist ein Grossbuchstabe"); } else { System.out.println("Das Zeichen " + c + " ist ein Kleinbuchstabe"); } } } 2Oa T]ZUS\RS 0SWa^WSZ S\bVÉZb SW\S\ VW\bS`VÉZbWUS\ 4SVZS` 7\ RS` HSWZS ! abSVb SW\ AS[WY]Z]\ RWSaSa eW`Yb eWS SW\S :SS`O\eSWac\U c\R PSS\RSb RWS 7T/\eSWac\U ?a^VaP\\ ;TTaP]fTXbd]V ) 1T[XTQcTa PQTa bRWfTa id T]cSTRZT]STa 5TW[Ta public class Leeranweisung01 { public static void main(String[] args) { if (3>5); System.out.println("3 ist größer 5"); } } #%
(( merker2.doc
Stand: 22.12.2005 13:39:00 ))
' 0]fTXbd]VT] Z^SXTaT] bcPcT\T]cb
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public class If04 { public static void main(String args[]) { boolean fehler = false; int monat = 12; if ((!fehler) && (monat > 0) && (monat < 13)) System.out.println("Alles o.k."); else System.out.println("Fehler aufgetreten oder Monat falsch"); } }
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(( merker2.doc
Stand: 22.12.2005 13:39:00 ))
' #
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-KYINGINZKRZK/,'T]KOY[TM <]QV Y][^ZSfS` eW`R SW\S XU/\eSWac\U eS\\ W\\S`VOZP RSa 8O0Z]QYa ]RS` W\\S` VOZP RSa <SW\0Z]QYa SW\S eSWbS`S XU/\eSWac\U abSVb 2WS /cTUOPS RSa \OQVT]ZUS\ RS\ >`]U`O[[a a]ZZ Sa aSW\ heSW HOVZS\ hc dS`UZSWQVS\ ?a^VaP\\ 8U $) 8U0]fTXbd]V X]]TaWP[Q STb =TX]IfTXVTb bRW[TRWc R^SXTac public class If05 { public static void main(String args[]) { int a = 2500; int b = 1500; if (a < b) { System.out.println("a ist kleiner als b "); if (b > 1000) System.out.println("und b ist groesser als 1000"); } else { System.out.println("a ist nicht kleiner als b "); if (b > 1000) System.out.println("und b ist groesser als 1000"); } } }
2WS 74AQVOQVbSZc\U YO\\ PSZWSPWU bWST S`T]ZUS\ /ca 5`º\RS\ RS` ÍPS`aWQVbZWQVYSWb eW`R S[^T]VZS\ \WQVb [SV` OZa ]RS` ! USaQVOQVbSZbS /ZbS`\ObWdS\ W\\S`VOZP SW\Sa HeSWUSa hc Y]RWS`S\ /ca\OV[S\ Yr\\S\ a] US\O\\bS XU9OaYORS\ aSW\ PSW RS\S\ XSeSWZa W[ T[bTHeSWU eWSRS`c[ SW\S XU/\eSWac\U abSVb( ?a^VaP\\ 8U %) 8U4[bT:PbZPST] public class If06 { public static void main(String args[]) { char c1 = 'z'; char c2 = 'z'; if (c1 == ' ') System.out.println("c1 ist leer"); else if (c1 < c2) System.out.println("c1 ist kleiner c2"); else if (c1 > c2) System.out.println("c1 ist groesser c2"); else if (c1 == c2) System.out.println("c1 ist gleich c2"); } }
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(( merker2.doc
Stand: 22.12.2005 13:39:00 ))
' 0]fTXbd]VT] Z^SXTaT] bcPcT\T]cb
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public class If07 { public static void main(String args[]) { int dollar = 0; boolean kreditkarte=true; if (!kreditkarte) { if (dollar == 0) System.out.println("Weder Dollar noch Karte"); } else System.out.println("Kreditkarte vorhanden"); } } 2WS @SUSZ eWS RWS ;SV`RScbWUYSWb OcTUSZrab eW`R a]ZZbS OcQV Oca RS` AQV`SWPeSWaS S`YS\\PO` eS`RS\ `WQVbWU SW\`ºQYS\ ÎQd]V id\ ?a^VaP\\ 8U & 7\ RWSaS[ >`]U`O[[ PSabSVb RS` 8OHeSWU RSa S`abS\ 7Ta Oca \c` SW\S` /\eSWac\U 2SaeSUS\ Yr\\bS [O\ TÉZaQVZWQVS`eSWaS OcT RWS 7RSS Y][[S\ RWS USaQVeSWTbS\ 9ZO[[S`\ W\ HSWZS\ # c\R & eSUhcZOaaS\ 4]`[OZ Wab ROa W\ =`R\c\U Z]UWaQV ZSW RS` TOZaQV 2WS /caTºV`c\U ZÉcTb RO\\ \É[ZWQV \WQVb a] eWS Sa RWS 3W\`ºQYc\U S` eO`bS\ ZÉzb 0WbbS bSabS\ AWS RWSa Rc`QV S\ba^`SQVS\RS >`]U`O[[É\RS`c\U 2Oa \OQVT]ZUS\RS >`]U`O[[ 8U ' a]ZZ T]ZUS\RS /cTUOPS ZraS\( Hc\ÉQVab a]ZZ ºPS` ^`ºTb eS`RS\ ]P Sa abW[[b ROaa O YZSW\S` Wab OZa P ES\\ ROa abW[[b a]ZZ OPUST`OUb eS`RS\ ]P P , Wab c\R OPVÉ\UWU ROd]\ a]ZZ hcaÉbhZWQV OcaUSUSPS\ eS`RS\( P Wab U`rzS` ;»bd]Vbe^abRW[PV UTW[TaWPUc) public class If08 { public static void main(String args[])
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(( merker2.doc
Stand: 22.12.2005 13:39:00 ))
' #
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int a = 2500; int b = 1500; if (a < b) if (b > 1000) System.out.println("a ist kleiner b " + "und b ist groesser als 1000"); else System.out.println("a ist nicht kleiner b "); System.out.println("Programmende"); } } ÎQd]V id\ ?a^VaP\\ 8U ' 2S` :rac\Uad]`aQVZOU 8U ' YPeP Wab TOZaQV Sa eW`R ZSRWUZWQV >`]U`O[[S\RS OcaUS USPS\ 0WbbS ^`ºTS\ AWS e] RS` 4SVZS` ZWSUb c\R Y]``WUWS`S\ AWS ROa >`]U`O[[ 6W\eSWaS hc` :rac\U( 2Oa >`]PZS[ RSa RO\UZW\U SZaS YO\\ \c` d]`Y][[S\ eS\\ RWS /\eSWac\US\ \WQVb Rc`QV 0Z]QYYZO[[S`\ PSU`S\hb ec`RS\
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a > b ? x + 5 : y / 5
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public class Fragezeichen01 { public static void main(String[] args)
{ $
(( merker2.doc
Stand: 22.12.2005 13:39:00 ))
' 0]fTXbd]VT] Z^SXTaT] bcPcT\T]cb
System.out.println((6 > 5) ? 17 + 5 : 25 / 5); } } 2WS PSWRS\ \ÉQVabS\ 0SWa^WSZS hSWUS\ ROaa RS` 0SRW\Uc\Ua]^S`Ob]` SW\S Y][^OYbS /ZbS`\ObWdS Tº` SW\S\ OcaTºV`ZWQVS\ 7T0STSVZ aSW\ YO\\ ?a^VaP\\ 5aPVTiTXRWT] !) Id]ÊRWbc SXT XU0]fTXbd]V public class Fragezeichen02 { public static void main(String[] args) String text = " " ; if (6 > 5) text = "Groesser"; else text = "Kleiner/Gleich"; System.out.println(text); } }
{
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public class IfOperator02 { public static void main(String[] args) { System.out.println((6 > 5) ? "groesser" : "kleiner/gleich"); } }
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9]OZIN9ZGZKSKTZ ES\\ RS` eSWbS`S /PZOcT SW\Sa >`]U`O[[a [SV` OZa heSW ;rUZWQVYSWbS\ PWSbSb [caa SW\S XUT[bT9OaYORS ^`]U`O[[WS`b eS`RS\ RS\\ RS` 7T0STSVZ YS\\b \c` SW\S /ZbS` \ObWdS( S\beSRS` ]RS` ES\\ OPS` OZZS HeSWUS d]\ RS[ ES`b SW\S` SW\hWUS\ DO`W OPZS\ OPVÉ\US\ a] YO\\ SdbZ [Wb RS` bfXcRW/\eSWac\U USO`PSWbSb eS`RS\ 0SWa^WSZ( 3W\ >`]U`O[[ T]`RS`b d][ 0SRWS\S` SW\S\ \c[S`WaQVS\ ES`b Tº` SW\S\ PS ZWSPWUS\ ;]\Ob RSa 6OZPXOV`Sa O\ PWa $ 2WS eSWbS`S DS`O`PSWbc\U VÉ\Ub OZZSW\ d]\ RWSaS[ SW\S\ ES`b OP ?a^VaP\\ BfXcRW ) <^]PcbcTgcT U¶a SPb 7P[QYPWa \Xc XU PdbVTQT] import java.util.*;
$
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Stand: 22.12.2005 13:39:00 ))
' #
ETaifTXVd]VT] BT[TZcX^] 0dbfPW[
public class Switch01 { public static void main(String[] args) { System.out.println("Bitte geben Sie den Monat 1.Halbjahr ein: "); Scanner eingabe = new Scanner(System.in); int monat = eingabe.nextInt(); if (monat == 1) System.out.println("Januar"); else if (monat == 2) System.out.println("Februar"); else if (monat == 3) System.out.println("März"); else if (monat == 4) System.out.println("April"); else if (monat == 5) System.out.println("Mai"); else if (monat == 6) System.out.println("Juni"); else System.out.println("Falsche Eingabe"); } }
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Stand: 22.12.2005 13:39:00 ))
' 0]fTXbd]VT] Z^SXTaT] bcPcT\T]cb
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?a^VaP\\ BfXcRW !) <^]PcbcTgcT U¶a SPb 7P[QYPWa \Xc bfXcRW PdbVTQT] import java.util.*; public class Switch02 { public static void main(String[] args) { System.out.println("Bitte Monat eingeben (1.Halbjahr)"); Scanner eingabe = new Scanner(System.in); int monat = eingabe.nextInt(); switch (monat) { case 1: System.out.println("Januar"); break; case 2: System.out.println("Februar"); break; case 3: System.out.println("Maerz"); break; case 4: System.out.println("April"); break; case 5: System.out.println("Mai"); break; case 6: System.out.println("Juni"); break; default: System.out.println("Der Monat ist falsch"); } System.out.println("Programm-Ende"); } }
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Stand: 22.12.2005 13:39:00 ))
' #
ETaifTXVd]VT] BT[TZcX^] 0dbfPW[
•
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import java.util.*; public class Switch03 { public static void main(String[] args) throws Exception { System.out.println("Bitte einen Buchstaben eingeben:"); Scanner eingabe = new Scanner(System.in); byte c = eingabe.nextByte(); switch (c) { case 'A': System.out.println("a"); case 'B': System.out.println("b"); case 'C': System.out.println("c"); case 'E': System.out.println("e"); default : System.out.println ("Alle anderen Buchstaben"); } } }
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(( merker2.doc
Stand: 22.12.2005 13:39:00 ))
' 0]fTXbd]VT] Z^SXTaT] bcPcT\T]cb
switch (monat) { case 1: case 3: case 5: case 7: case 8: case 10: case 12: tage = 31; break; case 4: case 6: case 9: case 11: tage = 30; break; case 2: if ( ((jahr % 4 == 0) && !(jahr % 100 == 0)) || (jahr % 400 == 0) ) tage = 29; else tage = 28; break; } System.out.println("Anzahl der Tage = " + tage); } } 2WS ZSS`S\ RPbT9ZOcaSZ\ eW`YS\ eWS SW\ SW\aQVZWSzS\RSa =RS` A]POZR RS` /caR`cQY [Wb RS` 9]\abO\bS\ ºPS`SW\abW[[b PSUW\\b RWS /caTºV`c\U OZZS` \OQVT]ZUS\RS\ /\ eSWac\US\ PWa hc[ 3\RS RSa AeWbQVAbObS[S\ba c\R aWS eW`R \c` OPUSP`]QVS\ eS\\ SW\ QaTPZAbObS[S\b OcTb`Wbb T]d\Ch_T] X] bfXcRW0]fTXbd]V eTafT]ST] <SPS\ RS\ \]`[OZS\ 9ZOaaS\ UWPb Sa OcQV T]d\Bg^S\ RWS SPS\TOZZa W\ 9ZOaaS\ PSaQV`WSPS\ eS`RS\ Yr\\S\ 3`ZÉcbS`c\US\ aWSVS 9O^WbSZ ' 3\c[Bg^S\ eS` RS\ OcQV /cThÉVZc\Uabg^S\ US\O\\b eSWZ RWS [rUZWQVS\ ES`bS RWS SW\S DO`WOPZS RWSaSa Bg^a OcT\SV[S\ YO\\ W\ 4]`[ SW\S` /cThÉVZc\U O\USUSPS\ eS`RS\ 2O\\ YO\\ SW\S DO`WOPZS d][ T]d\Bg^ OZa RPbTES`b PS\cbhb eS`RS\ ?a^VaP\\ BfXcRW $) 0QUaPVT e^] TX]T\ T]d\Ch_ PQWÊ]VXV \PRWT] public class Switch05 { enum Wochentage {montag, dienstag, mittwoch, donnerstag, freitag, samstag, sonntag} public static void main (String[] args) { $$
(( merker2.doc
Stand: 22.12.2005 13:39:00 ))
' $
BRW[TXUT] 8cTaPcX^] FXTSTaW^[d]V ;^^_
Wochentage w = Wochentage.samstag; switch(w) { case montag: System.out.println("Wochenbeginn"); case samstag: System.out.println("Arbeitsfrei"); } } } 4OhWb( 2WS bfXcRW/\eSWac\U eW`R SW\USaSbhb eS\\ d][ ES`b SW\S` \c[S`WaQVS\ DO `WOPZS\ RWS YO\\ OcQV SW\ T]d\Bg^ aSW\ [SV`S`S /ZbS`\ObWdS\ OPVÉ\US\ D]`Oca aSbhc\U Wab( 3a eW`R RS` ES`b SW\S` UO\hhOVZWUS\ DO`WOPZS\ OPUST`OUb QhcT bW^ac RWPa ^STa X]c [^]V Wab \WQVb S`ZOcPb
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(( merker2.doc
Stand: 22.12.2005 13:39:00 ))
' 0]fTXbd]VT] Z^SXTaT] bcPcT\T]cb
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public class While01 { public static void main(String[] args) int zahl = 1; while (zahl < 5) System.out.println(zahl++); } }
{
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(( merker2.doc
Stand: 22.12.2005 13:39:00 ))
' $
BRW[TXUT] 8cTaPcX^] FXTSTaW^[d]V ;^^_
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public class While02 { public static void main(String[] args) char buchstabe = 'a'; while (buchstabe <= 'z') System.out.println(buchstabe++); } }
{
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public class While03 { public static void main(String[] args) { char buchstabe = 'a'; while (buchstabe <= 'z') { System.out.println((char)(buchstabe - 32)); buchstabe++; } } } ?a^VaP\\ FWX[T # YPeP) 4]S[^bBRW[TXUT
import java.util.*; public class While04 { public static void main(String[] args) { Scanner eingabe = new Scanner(System.in); String zeile; while (true) { System.out.println("Bitte Text eingeben:"); zeile = eingabe.next(); System.out.println("Eingegeben wurde: " + zeile); } } } 2Oa >`]U`O[[ FWX[T # YPeP ZWSab hSWZS\eSWaS d]\ BhbcT\ X] 2WS Er`bS` SW\S` 3W\ UOPShSWZS eS`RS\ OcTUSa^ZWbbSb c\R W\ XSeSWZa SW\S` SWUS\S\ HSWZS OcaUSUSPS\ ^O` aS\ RS` 3W\UOPShSWZS ESWZ RWS 0SRW\Uc\U RS` fWX[TAQVZSWTS ROa :WbS`OZ cadT S\b
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(( merker2.doc
Stand: 22.12.2005 13:39:00 ))
' 0]fTXbd]VT] Z^SXTaT] bcPcT\T]cb
VÉZb Wab aWS W[[S` eOV` 2SaeSUS\ YO\\ RWSaS 3\RZ]aaQVZSWTS \c` USeOZbaO[ c\bS` EW\R]ea [Wb 1B@:1 OPUSP`]QVS\ eS`RS\ 7[ >`]U`O[[ FWX[T $ YPeP eS`RS\ d][ 0SRWS\S` HOVZS\ O\UST]`RS`b RWS W[ >`] U`O[[ a]ZO\US OcTORRWS`b eS`RS\ PWa RWS Ac[[S RS\ ES`b d]\ S``SWQVb VOb ?a^VaP\\ FWX[T $) IPW[T] PdUbd\\XTaT] import java.util.*; public class While05 { public static void main(String[] args) { Scanner eingabe = new Scanner(System.in); int zahl; int summe = 0; while (summe < 100) { System.out.println("Bitte Zahl eingeben:"); zahl = eingabe.nextInt(); summe = summe + zahl; } System.out.println("Die Summe betraegt: " + summe); } } ?a^VaP\\ FWX[T %) ;^VXbRWTa 5TW[Ta public class While06 { public static void main(String[] args) { boolean ichBinMillionaer = false; while (ichBinMillionaer == true); { System.out.println("Ich bin Millionaer"); } } } 2Oa >`]U`O[[ UWPb eS\\ AWS Sa US\Oc a] OPbW^^S\ eWS d]`USUSPS\ RS\ BSfb Oca( Ich bin Millionaer OPS` ROa Wab USZ]US\ RS\\ RWS DO`WOPZS XRW1X]<X[[X^ ]PTa S\bVÉZb RS\ ES`b UP[bT ÎQd]V id\ ?a^VaP\\ FWX[T % DS`acQVS\ AWS aSZPababÉ\RWU RS\ 4SVZS` hc TW\RS\ c\R Y]``WUWS`S\ AWS ROa >`] U`O[[ :rac\UaVW\eSWa( 2Oa >`]U`O[[ ;TTaP]fTXbd]V YPeP W[ /PaQV\Wbb & " S\bVÉZb RS\aSZPS\ 4SVZS`
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(( merker2.doc
Stand: 22.12.2005 13:39:00 ))
' $
BRW[TXUT] 8cTaPcX^] FXTSTaW^[d]V ;^^_
*U9INRKOLK ;Wb RS` 2]/\eSWac\U eW`R SW\S TczUSabScS`bS AQVZSWTS `SOZWaWS`b 2ORc`QV YO\\ [O\ S``SWQVS\ ROaa SW\ >`]U`O[[bSWZ [W\RSabS\a SW\[OZ OcaUSTºV`b c\R RO\OQV W[[S` eWSRS` PWa SW\S 0SRW\Uc\U UP[bT S`UWPb 2WS Ag\bOf RS` 2]AQVZSWTS Wab( do { // Schleifen-Block } while (Boolescher Ausdruck); 2S` AQVZSWTS\PZ]QY eW`R OcaUSTºV`b c\R RO\OQV RS` 0]]ZSaQVS /caR`cQY SdOZcWS`b ES\\ ROa 3`USP\Wa cadT Wab PSUW\\b SW\ \ScS` 2c`QVZOcT 2S` AQVZSWTS\PZ]QY eW`R RO\\ S`\Scb OcaUSTºV`b c\R O[ 3\RS eW`R US^`ºTb ]P SW\ eSWbS`S` 2c`QVZOcT S`T]` RS`ZWQV Wab cae 2WSaS /`b RS` AQVZSWTS\PWZRc\U \S\\b [O\ TczUSabScS`b ]RS` \WQVbOPeSWaS\R RS\\ RWS >`ºTc\U S`T]ZUb ]PRW RS[ AQVZSWTS\Rc`QVZOcT 2S` 0Z]QY eW`R OcT XSRS\ 4OZZ SW\[OZ dWSZZSWQVb a]UO` [SV`[OZa Rc`QVZOcTS\
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public class Do01 { public static void main(String[] args) int zahl = 5; do System.out.println(zahl++); while (zahl < 5); } }
{
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(( merker2.doc
Stand: 22.12.2005 13:39:00 ))
' 0]fTXbd]VT] Z^SXTaT] bcPcT\T]cb
2Oa >`]U`O[[ 3^ ! YPeP VOb SW\S ÉV\ZWQVS /cTUOPS\abSZZc\U OZZS`RW\Ua a]ZZS\ XSbhb RWS HOVZS\ d]\ # OcaUSUSPS\ eS`RS\ R V d]\ # PSUW\\S\R `ºQYeÉ`ba ?a^VaP\\ 3^ !) 0dbVPQT STa IPW[T] e^] $ QXb a¶RZfÊacb public class Do02 { public static void main(String[] args) int zahl = 5; do System.out.println(zahl--); while (zahl > 0); } }
{
ÎQd]V id\ ?a^VaP\\ 3^ ! :raS\ AWS RWS /cTUOPS [Wb RS` fWX[TAQVZSWTS O\abSZZS RS` S^/\eSWac\U ;»bd]Vbe^abRW[PV
public class While99 { public static void main(String[] args) int zahl = 5; while (zahl > 0) System.out.println(zahl--); } }
{
7[ >`]U`O[[ 3^ " YPeP a]ZZ SW\S HOVZ US`ObS\ eS`RS\ 2WS HOVZ ZWSUb heWaQVS\ c\R ' 2WS `WQVbWUS /\be]`b Wab OZa :WbS`OZ W[ >`]U`O[[ TSab Q]RWS`b AWS ZOcbSb " ?a^VaP\\ 3^ ") 4X]T IPW[ aPcT] import java.util.*; public class Do03 { public static void main(String[] args) { Scanner eingabe = new Scanner(System.in); int zahl; do { System.out.println("Bitte Zahl zwischen 0-9 eingeben:"); zahl = eingabe.nextInt(); } while (zahl != 4); System.out.println("Treffer! Richtig geraten"); } }
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(( merker2.doc
Stand: 22.12.2005 13:39:00 ))
' $
BRW[TXUT] 8cTaPcX^] FXTSTaW^[d]V ;^^_
,UX9INRKOLK
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?a^VaP\\ 5^a ) Zahlen von 1 - 10 ausgeben public class For01 { public static void main(String[] args) { for (int zahl = 1; zahl < 11; zahl++) System.out.println(zahl); } } 7[ 9]^T RWSaS` AQVZSWTS abSVS\ RWS R`SW \]beS\RWUS\ /\UOPS\( •
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%!
(( merker2.doc
Stand: 22.12.2005 13:39:00 ))
' 0]fTXbd]VT] Z^SXTaT] bcPcT\T]cb
•
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2WS 4]`AQVZSWTS eW`R OcQV d]\PWaAQVZSWTS US\O\\b eSWZ RWS :OcTdO`WOPZS RS\ AbO`beS`b O\UWPb RWS bg^WaQVS`eSWaS Rc`QV 7\Y`S[S\b V]QVUShÉVZb eW`R PWa RS` 3\R eS`b S``SWQVb Wab 8] fT[RWTa ATXWT]U^[VT fXaS SXT 5^aBRW[TXUT PdbVTU¶Wac- D]` 3W\b`Wbb W\ RWS AQVZSWTS eW`R RS` AbO`beS`b TSabUSZSUb Rc`QV 7\WbWOZWaWS`c\U RS` :OcTdO`WOPZS\ 2WSa S`T]ZUb \c` SW\[OZ RO\OQV \WS eWSRS` /\aQVZWSzS\R eW`R RWS 0SRW\Uc\U ºPS`^`ºTb 7ab ROa 3`USP\Wa cadT a] eW`R S`ab RS` AQVZSWTS\PZ]QY c\R O\ aQVZWSzS\R RWS ;]RWTWYObW]\ OcaUSTºV`b 0SW UP[bT eW`R O\ ROa 3\RS RS` AQVZSWTS dS` heSWUb c\R R]`b [Wb RS[ T]ZUS\RS\ 0STSVZ eSWbS` US[OQVb A][Wb Wab RWS 4]`AQVZSWTS OcQV Y]^TUSabScS`b aWS eW`R \cZZ[OZ SW\[OZ ]RS` [SV`TOQV Rc`QVUSTºV`b 2WS AQVZSWTS\Y]\ab`cYbS aW\R OcabOcaQVPO` ?a^VaP\\ FWX[T &( U^aBRW[TXUT X\ ?a^VaP\\ 5^a TabTciT] SdaRW fWX[T public class While07 { public static void main(String[] args) { int zahl = 1; while (zahl < 11) { System.out.println(zahl); zahl++; } } } ÎQd]V id\ ?a^VaP\\ 5^a ;]RWTWhWS`S\ AWS ROa >`]U`O[[ a] ROaa \c` XSRS heSWbS HOVZ d]\ PWa OcaUSUS PS\ eW`R OZa] RWS c\US`ORS\ HOVZS\ ! # % ' ;»bd]VbWX]fTXb)
3a `SWQVb RWS 7\Y`S[S\bWS`c\U RS` :OcTdO`WOPZS\ hc É\RS`\ R V RWS AQV`WbbeSWbS d]\ OcT hc S`VrVS\ 2Oa >`]U`O[[5^a ! YPeP []RWTWhWS`b ROa >`]U`O[[ 5^a YPeP a] ROaa RWS Ac[[S RS` HOVZS\ d]\ S`[WbbSZb c\R OcaUSUSPS\ eW`R( ?a^VaP\\ 5^a !) Bd\\T STa IPW[T] e^] QXb public class For02 { public static void main(String[] args) { int sum = 0; for (int zahl = 1; zahl <= 10; zahl++) { %"
(( merker2.doc
Stand: 22.12.2005 13:39:00 ))
' $
BRW[TXUT] 8cTaPcX^] FXTSTaW^[d]V ;^^_
sum = sum + zahl; } System.out.println("Summe ist = " + sum); } } ÎQd]V
0WbbS Q]RWS`S\ AWS SW\ \ScSa >`]U`O[[ 5^a " YPeP ROa A]\RS`hSWQVS\ RSa C\WQ]RSa OcaUWPb c\R heO` RWS HSWQVS\ [Wb RS\ 1]RS^]W\ba Jc PWa Jc 4 3a a]ZZ [Wb SW\S` 4=@AQVZSWTS USO`PSWbSb eS`RS\ 2S\YS\ AWS RO`O\ ROaa OcQV [Wb RWPaBg^S\ US`SQV\Sb eS`RS\ YO\\ ;»bd]Vbe^abRW[PV public class For03 { public static void main(String[] args) { for (char c = '\u0021'; c < '\u002F'; c++) System.out.println(c); } } 5>ABRW[TXUT) 0QfTXbT]S ^STa ]XRWcPQfTXbT]S. 2Oa ZSbhbS 0SWa^WSZ a]ZZ \]QV SW\[OZ SW\RScbWU RWS 4`OUS YZÉ`S\ ]P RWS 4=@AQVZSWTS SW\S OPeSWaS\RS ]RS` SW\S \WQVbOPeSWaS\RS AQVZSWTS Wab 2Ohc aQV`SWPS\ eW` SW\ >`]U`O[[ ROa hSWUb eWS RS` /PZOcT RSa >`]U`O[[a Wab eS\\ RWS BSabPSRW\Uc\U RS` 4=@AQVZSWTS \WS[OZa S`TºZZb aSW\ YO\\ ?a^VaP\\ 5^a #) 3XT 1TSX]Vd]V Xbc ]XT TaU¶[[c
public class For04 { public static void main(String[] args) { for (int i=0; i < 0;) System.out.println("Ich werde nie ausgegeben"); System.out.println("Programmende"); } } 4OhWb( 2WS 4]`AQVZSWTS Wab SW\S Y]^TUSabScS`bS SW\S OPeSWaS\RS AQVZSWTS W\ RWSaS` 6W\aWQVb dS`UZSWQVPO` [Wb RS` fWX[TAQVZSWTS eSWZ RWS >`ºTc\U RSa P]]ZSaQVS\ /ca R`cQYa d]` 3W\b`Wbb W\ RWS AQVZSWTS S`T]ZUb 1Tb^]STaWTXcT]) •
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(( merker2.doc
Stand: 22.12.2005 13:39:00 ))
' 0]fTXbd]VT] Z^SXTaT] bcPcT\T]cb
?a^VaP\\ 5^a $) 8]XcXP[XbXTad]V PdvTaWP[Q <^SXUXZPcX^] X]]TaWP[Q public class For05 { public static void main(String[] args) { int i= 0; for (; i < 1;) { System.out.println("Ich werde einmal ausgegeben"); i++; } } } 3W\S eSWbS`S 0Sa]\RS`VSWb hSWUb ROa T]ZUS\RS >`]U`O[[ 2WS S`abS c\R RWS R`WbbS 9][^]\S\bS W[ 9]^T SW\S` 4=@AQVZSWTS Yr\\S\ Oca SW\S` /cThÉVZc\U d]\ [SV`S `S\ BSWZOcaR`ºQYS\ PSabSVS\ 2WS SW\hSZ\S\ BSWZOcaR`ºQYS eS`RS\ eWS US\S`SZZ PSW /cThÉVZc\US\ W\ 8OdO RO\\ Rc`QV 9][[O OPUSb`S\\b ?a^VaP\\ 5^a %) `]U`O[[dS`VOZbS\ eS\\ RWS PSWRS\ 0SRW\Uc\US\ [Wb RS[ C<2=^S`Ob]` dS`Y\º^Tb eS`RS\- 2Oa \ÉQVabS >`]U`O[[ hSWUb SW\S TSVZS`VOTbS >`ºTPSRW\Uc\U 2WS >`ºTc\U OcT AQVZSW TS\S\RS a]ZZbS US\S`SZZ d]\ 5O\hhOVZS\ OPVÉ\UWU US[OQVb eS`RS\ \WQVb hc S[^ TSVZS\ Wab RWS /PT`OUS SW\Sa 5ZSWbY][[OeS`ba 2WSa YO\\ hc 3\RZ]aaQVZSWTS\ TºV`S\ ?a^VaP\\ 5^a &) D]VTf^[[cT 4]S[^bbRW[TXUT fTX[ 6[TXcZ^\\PFTac d]VT]Pd public class For07 { public static void main(String[] args)throws Exception for (float i=0; i != 5.0; i=i+0.2f) { System.out.println(i); if (i > 5) break; } } } %$
(( merker2.doc
Stand: 22.12.2005 13:39:00 ))
{
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BRW[TXUT] 8cTaPcX^] FXTSTaW^[d]V ;^^_
ES\\ RWS 4]`AQVZSWTS hc` DS`O`PSWbc\U d]\ 2ObS\aO[[Zc\US\ h 0 /``Og ]RS` 1]Z ZSQbW]\ SW\USaSbhb eW`R c\R eS\\ \c` ZSaS\R OcT RWS SW\hSZ\S\ 9][^]\S\bS\ hcUS U`WTTS\ eW`R RO\\ UWPb Sa SW\S dS`SW\TOQVbS DO`WO\bS RS` 0OaWa4]`AQVZSWTS RWS a] US\O\\bS U^aTPRWAQVZSWTS AWS Rc`QVZÉcTb RWS 2ObS\aO[[Zc\U d]\ d]`\S PSUW\ \S\R ZºQYS\Z]a PWa hc[ 3\RS c\R abSZZb W[ AQVZSWTS\PZ]QY RS\ ES`b SW\S` XSRS\ 9][^]\S\bS hc` DS`TºUc\U Hc[ Y][^ZSbbS\ DS`abÉ\R\Wa aW\R /``Og9S\\b\WaaS S` T]`RS`ZWQV aWSVS 9O^WbSZ ! ?a^VaP\\ 5^a4PRW ) BT`dT]cXT[[Tb ;TbT] TX]Tb 0aaPhb class ForEach01 { public static void main(String[] args) int[] sammlung = {1,5,7,3}; for (int zahl : sammlung) System.out.println(zahl); } }
{
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(( merker2.doc
Stand: 22.12.2005 13:39:00 ))
' 0]fTXbd]VT] Z^SXTaT] bcPcT\T]cb
9INGINZKR[TM\UT9INRKOLKT 5S\Oc a] eWS 740STSVZS USaQVOQVbSZb eS`RS\ Yr\\S\ Wab OcQV SW\S AQVOQVbSZc\U d]\ AQVZSWTS\PSTSVZS\ [rUZWQV h 0 YO\\ SW\S EWSRS`V]Zc\U SW\S eSWbS`S EWSRS` V]Zc\U S\bVOZbS\ eS\\ W\\S`VOZP SW\S` U^a/\eSWac\U W[ @c[^T SW\S eSWbS`S U^a AQVZSWTS abSVb /ZZS AbScS`PSTSVZS aW\R OcQV PSZWSPWU Y][PW\WS`PO` ?a^VaP\\ 5^a ') 5^aBRW[TXUT bRWPRWcT[]
public class For08 { public static void main(String[] args) { for (int zahl1 = 1; zahl1 <= 3; zahl1++) { for (int zahl2 = 1; zahl2 <=5; zahl2++) System.out.println(zahl1 + " " + zahl2); } } } 2WS /caUOPS RSa >`]U`O[[a 5^a ' YPeP aWSVb eWS T]ZUb Oca( 1 1 2 2 3 3
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;»bd]Vbe^abRW[PV public class For09 { public static void main(String[] args) { for (int i=0; i < 3; i++) { System.out.println("Aussenschleife"); for (int j = 0; j < 2; j++) System.out.println("Innenschleife"); } } } %&
(( merker2.doc
Stand: 22.12.2005 13:39:00 ))
' %
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public class While08 { public static void main(String[] args) { int zahl1 = 1; while (zahl1 <= 3) { int zahl2 = 1; while (zahl2 <=5) { System.out.println(zahl1 + " " + zahl2); zahl2++; } zahl1++; } } } 7\aPSa]\RS`S Tº` ROa /`PSWbS\ [Wb [SV`RW[S\aW]\OZS\ /``Oga PWSbS\ USaQVOQVbSZbS 4=@AQVZSWTS\ SW\S aSV` ºPS`aWQVbZWQVS AQV`SWPeSWaS aWSVS 9O^WbSZ !( /``Oga
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(( merker2.doc
Stand: 22.12.2005 13:39:00 ))
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HXKGQ'T]KOY[TM ;Wb RS` 0`SOY/\eSWac\U eW`R RWS OYbcSZZS AQVZSWTS Y][^ZSbb PSS\RSb 2S` AQVZSWTS\ `c[^T eW`R dS`ZOaaS\ c\R RWS DS`O`PSWbc\U [Wb RS` S`abS\ /\eSWac\U ]PRW RS` AQVZSWTS T]`bUSaSbhb 2Oa T]ZUS\RS >`]U`O[[ 1aTPZ YPeP a]ZZ SW\S 7bS`ObW]\ [OfW[OZ [OZ Rc`QVTºV`S\ c\R ROPSW HOVZS\ OcTac[[WS`S\ 2WS Ac[[S RS` HOVZS\ RO`T XSR]QV RS\ ES`b \WQVb ºPS`aQV`SWbS\ 7ab RWSa RS` 4OZZ eW`R RWS AQVZSWTS d]`hSWbWU OPUSP`]QVS\ ?a^VaP\\ 1aTPZ ) 0QQadRW STa BRW[TXUT fT]] Bd\\T TaaTXRWc import java.util.*; public class Break01 { public static void main(String[] args) { int zahl; int summe = 0; Scanner eingabe = new Scanner(System.in); for (int i=0; i < 10; i++) { System.out.println("Bitte Zahl eingeben: "); zahl = eingabe.nextInt(); if ((summe + zahl) > 1000) { System.out.println("Die Summe ist > 1000"); break; } else { summe = summe + zahl; System.out.println("Summe = " + summe); } } } } Bg^WaQVSa /\eS\Rc\UaPSWa^WSZ Tº` RWS QaTPZ/\eSWac\U Wab RS` /PP`cQV SW\S` 3\R Z]aaQVZSWTS( &
(( merker2.doc
Stand: 22.12.2005 13:39:00 ))
' %
B_ad]V0]fTXbd]VT] QaTPZ R^]cX]dT
for (; true ;) { ... if (....) break; }
// Die komplette Schleife wird beendet
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IUTZOT[K'T]KOY[TM ;Wb RS` 1]\bW\cS/\eSWac\U eW`R \c` RS` OYbcSZZS AQVZSWTS\Rc`QVZOcT d]`hSWbWU PS S\RSb 3a eW`R hc[ AQVZSWTS\O\TO\U USa^`c\US\ c\R Sa eW`R SW\S S`\ScbS /caeS` bc\U RSa 0]]ZSaQVS\ /caR`cQYa S`hec\US\ 1TXb_XT[) for (int i=0; i<10; i++) ... if (....) continue; ... }
{
// 10mal die Schleife ausführen // Diesen Durchlauf abbrechen
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public class Continue01 { public static void main(String[] args) { for (int i= -10; i <11; i++) { if (i == 0) continue; // Laufende Iteration beenden System.out.println("Kehrwert von " + i + " = " + 1.0 / i); } } }
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(( merker2.doc
Stand: 22.12.2005 13:39:00 ))
' 0]fTXbd]VT] Z^SXTaT] bcPcT\T]cb
int zahl; int summe = 0; for (int i=0; i < 3; i++) { System.out.println("Aussenschleife " + i); for (int j=0; j < 4; j++) { if (i == 1) continue; System.out.println("Innenschleife " + i); } } } } ES\\ RWS /cTUOPS\abSZZc\U Sa XSR]QV dS`ZO\Ub ROaa OZZS AQVZSWTS\ OPUSP`]QVS\ eS`RS\ [ºaaS\ a] YO\\ RWSa [Wb RS[ 0SaQV`WTbS\ d]\ AQVZSWTS\ Rc`QV :OPSZ aSV` ZSWQVb `SOZWaWS`b eS`RS\
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continue hauptschleife;
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(( merker2.doc
Stand: 22.12.2005 13:39:00 ))
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(( merker2.doc
Stand: 22.12.2005 13:39:00 ))
' 0]fTXbd]VT] Z^SXTaT] bcPcT\T]cb
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2WS T]ZUS\RS\ 6W\eSWaS aW\R Tº` RS\ /\TÉ\US` \WQVb c\PSRW\Ub eWQVbWU AWS Yr\\S\ OcQV a^ÉbS` PSW 0SRO`T Rc`QVUSO`PSWbSb eS`RS\ Bg^WaQVSa 3W\aObhUSPWSb Tº` SW\S AQVZSWTS\PWZRc\U Wab ROa :SaS\ d]\ 2ObS\aO[[Zc\ US\ S\beSRS` d]\ SW\S[ SfbS`\S\ A^SWQVS` ]RS` W\\S`VOZP RSa W\bS`\S\ A^SWQVS`a h 0 Oca SW\S` 2^[[TRcX^] d]\ =PXSYbS\ 2OPSW Wab T]ZUS\RSa >`]PZS[ hc ZraS\( 6ÉcTWU Wab RWS 0SRW\Uc\U Tº` RWS EWSRS`V]Zc\U ROa D]`VO\RS\aSW\ eSWbS`S` 2ObS\ W[ 3W\ UOPSab`][ ]RS` W\ RS` 1]ZZSQbW]\ /Za] eW`R RWSaS 0SRW\Uc\U e^a RS` /caTºV`c\U RSa AQVZSWTS\`c[^Ta US^`ºTb /PS` eWS Wab RWSaS >`ºTc\U [rUZWQV eS\\ R]QV PSW[ S`abS\ 2c`QVZOcT \]QV UO` \WQVb dS`acQVb e]`RS\ Wab hc ZSaS\- 4]ZUS\RSa 0SWa^WSZ a]ZZ RWSaS >`]PZS[ObWY dS`RScbZWQVS\ ?a^VaP\\ =Tgc ) CTgc e^] BhbcT\ X] [TbT] d]S eTaPaQTXcT] import java.io.*; public class Next01 { public static void main (String[] args) throws Exception { BufferedReader in = new BufferedReader( new InputStreamReader(System.in)); String str = " "; while (str != null) { System.out.println("Bitte Text eingeben: "); str = in.readLine(); System.out.println("Verarbeitet wird; " + str); } System.out.println("Programmende"); } } &"
(( merker2.doc
Stand: 22.12.2005 13:39:00 ))
' &
;»bd]Vb\dbcTa U¶a BRW[TXUT]
2Oa >`]U`O[[ a]ZZ BSfb d][ 0WZRaQVW`[ ZSaS\ c\R OZa 3QV] eWSRS` OcaUSPS\ 2WS :SaSaQVZSWTS eW`R PSS\RSb eS\\ RWS 3W\UOPS d][ 0SRWS\S` ]d[[ Wab eS\\ OZa] YSW \S 2ObS\ USZSaS\ e]`RS\ aW\R 2WSa Wab RO\\ RS` 4OZZ eS\\ ROa >`]U`O[[ PSS\RSb eW`R ]V\S 2ObS\SW\UOPS c\bS` ;AEW\R]ea Rc`QV 1B@:1 ÎQd]V id\ ?a^VaP\\ =Tgc 0WbbS bSabS\ AWS ROa >`]U`O[[ Rc`QV 3W\UOPS SW\WUS` HSWZS\ 0SS\RS\ AWS RO\\ ROa >`]U`O[[ c\R abO`bS\ AWS Sa \Sc 5SPS\ AWS RWSa[OZ UO` \WQVba SW\ a]\RS`\ PSS\RS\ AWS Sa a]T]`b EW`R RWS 3W\UOPS ]d[[ dS`O`PSWbSb- EWS dS`VÉZb aWQV ROa >`]U`O[[ eS\\ RWS DO`WOPZS bca [Wb ]d[[ W\WbWOZWaWS`b eW`R- 2WS :rac\U W[ >`]U`O[[ =Tgc YPeP Wab \WQVb PST`WSRWUS\R eSWZ RWS EWSRS`V] Zc\UaPSRW\Uc\U bca , ]d[[ PSW[ S`abS\ 2c`QVZOcT OPUST`OUb eW`R ]Pe]VZ aWS S`ab a^ÉbS` USaSbhb eW`R Rc`QV ROa :SaS\ 4º` RWSaSa W[[S` eWSRS`YSV`S\RS >`]PZS[ ROaa SW\S /PT`OUS RS` 0SRW\Uc\U PSW[ S`abS\ 2c`QVZOcT \]QV \WQVb [rUZWQV Wab eSWZ RWS D]`OcaaSbhc\U TSVZb UWPb Sa dS` aQVWSRS\S :rac\UadO`WO\bS\ ?a^VaP\\ =Tgc !) 4abcTa ;»bd]Vbe^abRW[PV TX]T 4]S[^bbRW[TXUT import java.io.*; public class Next02 { public static void main (String[] args) throws Exception { BufferedReader in = new BufferedReader( new InputStreamReader(System.in)); String str = " "; while (true) { System.out.println("Bitte Text eingeben: "); str = in.readLine(); if (str == null) break; System.out.println("Verarbeitet wird: " + str); } System.out.println("Programmende"); } } 2WS :rac\U Tc\YbW]\WS`b Ucb R]QV eW`R aWS RORc`QV ZSWQVb c\ºPS`aWQVbZWQV eSWZ \WQVb S`YS\\PO` Wab ROaa RWS 3\RZ]aaQVZSWTS \c` d]`USbÉcaQVb Wab eSWZ Sa aSV` e]VZ SW\S YZO` hc T]`[cZWS`S\RS 0SRW\Uc\U Tº` RWS 3\baQVSWRc\U ºPS` ROa AQVZSWTS\S\RS UWPb 2S` ?cSZZbSfb a]ZZ ROa OcaR`ºQYS\ eOa RS` >`]U`O[[WS`S` PSOPaWQVbWUb 2WSaSa HWSZ eW`R VWS` \WQVb S``SWQVb
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(( merker2.doc
Stand: 22.12.2005 13:39:00 ))
' 0]fTXbd]VT] Z^SXTaT] bcPcT\T]cb
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import java.io.*; public class Next03 { public static void main (String[] args) throws Exception { BufferedReader in = new BufferedReader( new InputStreamReader(System.in)); System.out.println("Bitte Text eingeben: "); String str = in.readLine(); while (str != null) { System.out.println("Verarbeitet wird: " + str); System.out.println("Bitte Text eingeben: "); str = in.readLine(); } System.out.println("Programmende"); } } 2WSaSa >`]U`O[[ O`PSWbSb `WQVbWU 2S` /cTPOc Wab Z]UWaQV c\R dS`abÉ\RZWQV /ZZS`RW\Ua VOb Sa RS\
import java.util.Scanner; public class Next04 { public static void main (String[] args) { Scanner cons = new Scanner(System.in); String ein = null; System.out.println("Bitte Text eingeben: "); while (cons.hasNext()) { ein = cons.next(); if (ein.equals("ende")) break; System.out.println("Eingabe ist " + ein); } System.out.println("Programmende"); } } 3a UWPb SW\WUS 8OdOAbO\RO`RYZOaaS\ RWS S\bVOZbS\ Tº` RWS 7bS`ObW]\ PSa]\RS`S ;SbV] RS\ RWS ROa >`]PSZSaS\ Rc`QVTºV`S\ 7\ RWSaS[ 0SWa^WSZ Wab ROa RWS ;SbV]RS WPb =Tgc RS` 9ZOaaS BRP]]Ta AWS ZWSTS`b OZa 3`USP\Wa RSa D]`OcaZSaS\a RS\ ES`b cadT eS\\ RS` 3W\UOPSab`][ \]QV eSWbS`S 2ObS\ S\bVÉZb ]RS` UP[bT eS\\ YSW\S 2ObS\ [SV` d]`VO\RS\ aW\R &$
(( merker2.doc
Stand: 22.12.2005 13:39:00 ))
' &
;»bd]Vb\dbcTa U¶a BRW[TXUT]
?a^VaP\\ =Tgc $)
EXTacTb 1TXb_XT[ 2[Pbb 8cTaPc^a U¶a TX]T 2^[[TRcX^] QT]dc iT] import java.util.*; public class Next05 { public static void main (String[] args) { // Erstellen einer Objektsammlung im Speicher ArrayList list = new ArrayList(); list.add(new String("Erstes Objekt")); list.add(new String("Zweites Objekt")); list.add(new String("Drittes Objekt")); // Iterieren durch die Objektsammlung Iterator i = list.iterator(); while(i.hasNext()) { System.out.println(i.next()); } } } 2WS AbO\RO`RPWPZW]bVSY d]\ 8OdO S\bVÉZb dS`aQVWSRS\S 9ZOaaS\ Tº` RWS DS`eOZbc\U d]\ =PXSYbS\ W[ /`PSWbaa^SWQVS` 2WSaSa 0SWa^WSZ PS\cbhb VWS`Tº` RWS 9ZOaaS YP eP dcX[ 0aaPh;Xbc 2O\\ eW`R SW\S 7\abO\h RS` 9ZOaaS 8cTaPc^a S`hScUb C\R R]`b Wab SW\ AbO\RO`ROZU]`WbV[ca Tº` ROa 7bS`WS`S\ Rc`QV RS`O`bWUS 2ObS\aO[[Zc\US\ W\ RS\ ;S bV]RS\ WPb=Tgc c\R ]Tgc d]`^`]U`O[[WS`b ÎQd]V id\ ?a^VaP\\ =Tgc $ EO\RSZ\ AWS ROa >`]U`O[[ c[ PSW RS` C[eO\RZc\U [Wb 8 A3 # Y][[b SW\S EO`\c\U RWS XSR]QV WU\]`WS`b eS`RS\ YO\\ BSabS\ AWS ROa >`]U`O[[ Ò\RS`\ AWS Sa RO\OQV a] OP ROaa SW\ dWS`bSa =PXSYb VW\hcUSTºUb eW`R c\R RO\OQV ROa =PXSYb ºPS` RS\ 7\RSf [Wb RS` ;SbV]RS aT\^eT USZraQVb eW`R 7X]fTXbT U¶a ST] ;TWaT]ST]) 2WS 9ZOaaS 0aaPh;Xbc Wab BSWZ RSa 1]ZZSQbW]\4`O[Se]`Ya ASWb 8 A3 # aW\R RWS 1]Z ZSQbW]\ OZa ^O`O[Sb`WaWS`PO`S Bg^S\ 5S\S`WQa ^`]U`O[[WS`b 2Oa /`PSWbS\ [Wb 5S \S`WQa Wab SW\ BVS[O Tº` 4]`bUSaQV`WbbS\S c\R eW`R RSaVOZP W\ RWSaS[ 0cQV \WQVb PS VO\RSZb C[ RWS EO`\c\U PSW RS` C[eO\RZc\U hc SZW[W\WS`S\ Wab ROa >`]U`O[[ eWS T]ZUb hc É\RS`\( ?a^VaP\\ =Tgc %)
9!B4 $ aTPSh import java.util.*; public class Next06 { public static void main (String[] args) { // Erstellen einer Objektsammlung im Speicher &%
(( merker2.doc
Stand: 22.12.2005 13:39:00 ))
' 0]fTXbd]VT] Z^SXTaT] bcPcT\T]cb
ArrayList<String> list = new ArrayList<String>(); list.add(new String("Erstes Objekt")); list.add(new String("Zweites Objekt")); list.add(new String("Drittes Objekt")); // Iterieren durch die Objektsammlung Iterator<String> i = list.iterator(); while(i.hasNext()) { System.out.println(i.next()); } } } 2WS 9ZOaaS BcaX]VC^ZT]XiTa PWSbSb SPS\TOZZa ;SbV]RS\ O\ RWS ^`]PSeSWaS ZSaS\ 2WSaS bSabS\ ]P eSWbS`S B]YS\ W[ Ab`W\U dS`TºUPO` aW\R c\R ZWSTS`\ cadT ]RS` UP[bT OZa 3`USP\Wa 3`ab RO\OQV S`T]ZUb RO\\ [Wb ]TgcC^ZT] ROa SQVbS :SaS\ ?a^VaP\\ =Tgc &) 5¶]UcTb 1TXb_XT[ 2[Pbb BcaX]VC^ZT]XiTa
import java.util.*; public class Next07 { public static void main (String[] args) { String s ="Dies ist nur ein Test"; StringTokenizer st = new StringTokenizer(s); while (st.hasMoreTokens()) System.out.println(st.nextToken()); } }
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(( merker2.doc
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(( merker2.doc
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(( merker2.doc
Stand: 22.12.2005 13:39:00 ))
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(( merker2.doc
Stand: 22.12.2005 13:39:00 ))
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String str = null; try { str = new DataInputStream(System.in).readLine(); } catch (Exception e) { System.out.println(e); } return Integer.parseInt(str); } static int potenzieren(int z1, int z2) { int erg = z1; if (z2 == 0) return(1); for (; z2>1; z2--) { erg = erg * z1; } return erg; } static void ausgabe(int erg) { System.out.println("Das Ergebnis ist: " + erg); } }
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Stand: 22.12.2005 13:39:00 ))
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(( merker2.doc
Stand: 22.12.2005 13:39:00 ))
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(( merker2.doc
Stand: 22.12.2005 13:39:00 ))
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(( merker2.doc
Stand: 22.12.2005 13:39:00 ))
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Stand: 22.12.2005 13:39:00 ))
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Stand: 22.12.2005 13:39:00 ))
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(( merker2.doc
Stand: 22.12.2005 13:39:00 ))
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(( merker2.doc
Stand: 22.12.2005 13:39:00 ))
( B^UcfPaTbhbcT\T T]cfXRZT[] ?a^YTZcT aTP[XbXTaT]
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(( merker2.doc
Stand: 22.12.2005 13:39:00 ))
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(( merker2.doc
Stand: 22.12.2005 13:39:00 ))
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(( merker2.doc
Stand: 22.12.2005 13:39:00 ))
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(( merker2.doc
Stand: 22.12.2005 13:39:00 ))
( B^UcfPaTbhbcT\T T]cfXRZT[] ?a^YTZcT aTP[XbXTaT]
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f := 1
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f := f*z
z := z + 1
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public class Fakultaet { public static void main(String[] args) int z = 1; int f = 1;
{
while (z <= 4) { f = f * z; z++; } System.out.println(f); } }
(( merker2.doc
Stand: 22.12.2005 13:39:00 ))
( $
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public class Kaefer01 { public static void main(String[] args) throws Exception { for (int spinne=1; spinne<10; spinne++) for (int kaefer=1; kaefer<15; kaefer++) if ((spinne * 8) + (kaefer * 4) == 64) System.out.printf("Kaefer = %d, Spinne =%d \n", kaefer, spinne); } }
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(( merker2.doc
Stand: 22.12.2005 13:39:00 ))
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(( merker2.doc
Stand: 22.12.2005 13:39:00 ))
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(( merker2.doc
Stand: 22.12.2005 13:39:00 ))
( B^UcfPaTbhbcT\T T]cfXRZT[] ?a^YTZcT aTP[XbXTaT]
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(( merker2.doc
Stand: 22.12.2005 13:39:00 ))
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(( merker2.doc
Stand: 22.12.2005 13:39:00 ))
( B^UcfPaTbhbcT\T T]cfXRZT[] ?a^YTZcT aTP[XbXTaT]
;»bd]Vbe^abRW[PV U¶a ?a^VaP\\PQ[PdU_[P] ja Block A
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public class KleinsteZahl { public static void main(String[] args) int z1, z2, z3; z1 = 20; z2 = 11; z3 = 10;
{
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(( merker2.doc
Stand: 22.12.2005 13:39:00 ))
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(( merker2.doc
Stand: 22.12.2005 13:39:00 ))
=GYYOTJ3KZNUJKT%
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methodenkopf { Methodenblock }
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public class Methode01 { public static void main (String[] args) System.out.println(args[0]); } }
{
// Kopf // Block
(( merker2.doc
Stand: 22.12.2005 13:39:00 ))
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(( merker2.doc
Stand: 22.12.2005 13:39:00 ))
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String str = new String("Dies ist ein Satz");
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Stand: 22.12.2005 13:39:00 ))
! <XcVT[XTUTacT
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Stand: 22.12.2005 13:39:00 ))
?a^VaP\\ `]U`O[[ W\ HSWZS " ZOcbSb( generator.nextInt(50); /cQV aWS S\bVÉZb eWSRS` RWS R`SW 0SabO\RbSWZS 7\abO\h\O[S ;SbV]RS\\O[S >O`O[S bS` 2WS /cTUOPS RWSaSa ;SbV]RS\OcT`cTa Wab Sa SW\S HcTOZZahOVZ heWaQVS\ c\R # hc US\S`WS`S\ 2WSaS HOVZ eW`R \OQV /caTºV`c\U RS` ;SbV]RS OZa 3`USP\Wa hc`ºQY USZWSTS`b c\R O\ RWS AbSZZS RWSaSa /cT`cTa USaSbhb a] ROaa RO\OQV RWS ES`bShceSW ac\U O\ RWS DO`WOPZS idUP[[biPW[ S`T]ZUS\ YO\\ ÎQd]V id\ ?a^VaP\\ `]U`O[[ a] ROaa [Wb RS[ X\_^acAbObS[S\b USO`PSWbSb eW`R
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Stand: 22.12.2005 13:39:00 ))
! <XcVT[XTUTacT
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Stand: 22.12.2005 13:39:00 ))
'XHKOZKTSOZ3KZNUJKTJKXSOZMKROKLKXZKT1RGYYK3GZN 7\ RS` [WbUSZWSTS`bS\ 9ZOaaS
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Stand: 22.12.2005 13:39:00 ))
! <XcVT[XTUTacT
'XHKOZKTSOZ3KZNUJKTJKXSOZMKROKLKXZKT1RGYYK9_YZKS
3W\S VÉcTWU PS\cbhbS 9ZOaaS Wab RWS 9ZOaaS BhbcT\ AWS S\bVÉZb dS`aQVWSRS\S \ºbhZWQVS 4SZRS` c\R ;SbV]RS\ /ZZS ;S[PS` aW\R bcPcXR OZa] 9ZOaaS\[S[PS` RWS PS\cbhb eS`RS\ Yr\\S\ ]V\S d]`VS` SW\S 7\abO\h hc S`hScUS\ C[ RWSaS ;S[PS` hc `STS `S\hWS`S\ [caa RWS DO`WOPZS ]RS` RWS ;SbV]RS _cOZWTWhWS`b eS`RS\ [Wb RS[ 9ZOaaS\ \O[S\ h 0 BhbcT\ ]cb ]RS` BhbcT\ USbASQc`Wbg;O\OUS` 2Oa T]ZUS\RS >`]U`O[[ PS\cbhb RWS AgabS[YZOaaS heSW[OZ \É[ZWQV PSW[ /cT`cT RS` ;SbV]RS VTc?a^_Tach c[ RS\ 0S\cbhS`\O[S\ RSa AgabS[a hc S`[WbbSZ\ c\R RO\\ PSW RS` /caUOPS [Wb _aX]c[] ?a^VaP\\ BhbcT\ ) 0aQTXcT] \Xc STa BhbcT\2[Pbb
class System01 { public static void main(String[] args) throws Exception { String name; name = System.getProperty("user.name"); System.out.println(name); } } F^id Z»]]T] bcPcXR X\_^ac0]fTXbd]VT] VT]dcic fTaST]. 3W\S DO`WO\bS Wab RS` 3W\aObh d]\ bcPcXR7[^]`b 2ORc`QV YO\\ RS` /cT`cT d]\ abObW aQVS\ ;S[PS`\ SW\S` 9ZOaaS dS`SW\TOQVb eS`RS\ ?a^VaP\\ BhbcT\ !) BcPcXR8\_^ac Ta[PdQc d]`dP[XUXiXTacT] IdVaXUU import static java.lang.System.*; class System02 { public static void main(String[] args) throws Exception { String name; name = getProperty("user.name"); out.println(name); } } 2S` D]`bSWZ Wab RWS Yº`hS`S AQV`SWPeSWaS PSW[ @STS`S\hWS`S\ d]\ bcPcXR;S[PS`\
'XHKOZKTSOZ3KZNUJKTJKXSOZMKROKLKXZKT1RGYYK/TZKMKX
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Stand: 22.12.2005 13:39:00 ))
2c`QV RS\ 3W\aObh d]\ E`O^^S`9ZOaaS\ S`VÉZb RS` >`]U`O[[WS`S` hcaÉbhZWQVS DS`O` PSWbc\Ua[rUZWQVYSWbS\ RS\\ RWS 9ZOaaS\ S\bVOZbS\ ;SbV]RS\ RWS hcaÉbhZWQV hc RS\ SW\USPOcbS\ =^S`Ob]`S\ OcT RWSaS 2ObS\bg^S\ ]^S`WS`S\ A] S\bVÉZb RWS 9ZOaaS 8]cT VTa h 0 RWS T]ZUS\RS ;SbV]RS( static int
parseInt(String s)
Parses the string argument as a signed decimal integer.
?a^VaP\\ 8]cTVTa ) 0aQTXcT] \Xc FaP__Ta:[PbbT] public class Integer01 { public static void main (String[] args) { String str = "125"; int ergebnis = Integer.parseInt(str); System.out.println(ergebnis); } } ESWbS`S 6W\eSWaS hc E`O^^S`9ZOaaS\ TW\RS\ AWS W[ 9O^WbSZ # #
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3W\ 4OhWb Oca RS\ PWaVS`WUS\ ÍPc\US\ Wab T]ZUS\RS @SUSZ( Hc[ /cT`cT SW\S` ;SbV]RS [caa RS`S\ AWU\Obc` O`O[SbS` PSYO\\b aSW\ 0STW\RSb aWQV RWS ;SbV]RS \WQVb W\ RS`aSZPS\ 9ZOaaS a] [caa RS` /cT`cT _cOZW TWhWS`b S`T]ZUS\ R V S\beSRS` [Wb RS[ =PXSYb\O[S\ PSW 7\abO\h[SbV]RS\ ]RS` [Wb RS[ 9ZOaaS\\O[S\ PSW 9ZOaaS\[SbV]RS\ ÎQd]V id\ ?a^VaP\\ 8]cTVTa Ò\RS`\ AWS ROa >`]U`O[[ a] ROaa [Wb 6WZTS SW\S` ;SbV]RS RS` 9ZOaaS 8]cTVTa RS` VSfORShW[OZS ES`b RS` DO`WOPZS\ TaVTQ]Xb OcaUSUSPS\ eW`R ;»bd]Vbe^abRW[PV public class Integer02 { public static void main (String[] args) { String str = "125"; int ergebnis = Integer.parseInt(str); System.out.println(Integer.toHexString(ergebnis)); } }
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Stand: 22.12.2005 13:39:00 ))
"
9INGINZKRT[TJ
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object.methode1(object.methode2());
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} 6WS` VOb RWS DS`YSbbc\U W\ RS` ZSbhbS\ HSWZS RS\ T]ZUS\RS\ /cTPOc W\\S`VOZP RS` 9ZO[[S`(
object.methode1().methode2().methode3();
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(( merker2.doc
Stand: 22.12.2005 13:39:00 ))
'XHKOZKTSOZ3KZNUJKTJKXSOZMKROKLKXZKT1RGYYK6XUVKXZOKY
0Sa]\RS`a W[ >OQYOUS YPeP dcX[ aW\R SW\WUS 9ZOaaS\ S\bVOZbS\ RWS OZa a] US\O\\bS CbWZWbWSa 6WZTaYZOaaS\ PShSWQV\Sb eS`RS\ c\R RS[ >`]U`O[[WS`S` 2WS\abS Tº` VÉc TWU O\TOZZS\RS /`PSWbS\ O\PWSbS\ A] UWPb Sa RWS 9ZOaaS ?a^_TacXTb RWS Sa [Wb SW\TO QVS\ ;SbV]RS\OcT`cTS\ S`[rUZWQVb W[ A^SWQVS` 2ObS\ [Wb AcQVPSU`WTTS\ hc YS\\ hSWQV\S\ a] ROaa SW\ 2W`SYbhcU`WTT RO`OcT [rUZWQV Wab 2WS 2ObS\ eS`RS\ W\ 4]`[ d]\ heSW Ab`W\Ua USa^SWQVS`b e]PSW RS` S`abS Ab`W\U RS\ AcQVPSU`WTT AQVZºaaSZ YSg c\R RS` heSWbS Ab`W\U RS\ ROhc USVr`S\RS\ ES`b dOZcS S\bVÉZb 2WSaS /`b RS` A^SWQVS`c\U Wab Tº` dWSZS /cTUOPS\abSZZc\US\ VWZT`SWQV h 0 eS`RS\ >O `O[SbS` heWaQVS\ VSbS`]US\S\ AgabS[S\ VÉcTWU W\ RS` 9SgDOZcS4]`[ OcaUSbOcaQVb ]RS` AgabS[eS`bS W\ RWSaS` 4]`[ USa^SWQVS`b c\R OPUST`OUb h 0 W\ 3\dW`]\[S\b DO`WOPZS\ ?a^VaP\\ ?a^_TacXTb ) 0aQTXcT] \Xc :Th EP[dT?PPaT] import java.util.*; public class Properties01 { public static void main (String[] args) { Properties prop = new Properties(); prop.setProperty("name", "Roman Merker"); prop.setProperty("beruf", "Programmierer"); prop.setProperty("ort", "Steinfurt"); prop.list(System.out); } } ÎQd]V id\ ?a^VaP\\ ?a^_TacXTb 2WS 9ZOaaS ?a^_TacXTb PWSbSb Y][T]`bOPZS ;rUZWQVYSWbS\ Tº` RS\ 2W`SYbhcU`WTT OcT SW\ hSZ\S >`]^S`bWSa 2OPSW [caa ZSRWUZWQV RS` AQVZºaaSZ YSg OZa AcQVPSU`WTT O\USUSPS\ eS`RS\ 0WbbS É\RS`\ AWS ROa >`]U`O[[ a] ROaa \c` RS` E]V\]`b OcaUSUSPS\ eW`R [rUZWQVab Rc`QV SW\S\ USaQVOQVbSZbS\ ;SbV]RS\OcT`cT :rac\Uad]`aQVZOU Tº` RWS /caUOPS( System.out.println(prop.getProperty("ort"))* 2Oa T]ZUS\RS >`]U`O[[ hSWUb eWS Y][^OYb SW\ /caR`cQY Q]RWS`b eS`RS\ YO\\ RS` SW\S\ USaQVOQVbSZbS\ ;SbV]RS\OcT`cT S\bVÉZb ?a^VaP\\ ?a^_TacXTb !) 6TbRWPRWcT[cTa
!
(( merker2.doc
Stand: 22.12.2005 13:39:00 ))
"
2WS HSWZS [Wb RS[ _aX]c[]0STSVZ S\bVÉZb RS\ /cT`cT RS` abObWaQVS\ ;SbV]RS Bhb cT\ VTc?a^_TacXTb 2WSaS ;SbV]RS ZWSTS`b OZa 3`USP\Wa SW\ =PXSYb [Wb SW\S` HcaO[ [S\abSZZc\U OZZS` AgabS[SWUS\aQVOTbS\ 2O`Oca eW`R SW\S UO\h PSabW[[bS >`]^S`bg USZSaS\( [Wb VTc?a^_Tach eW`R RS` :Th ^b ]P\T USacQVb c\R RSaaS\ EP[dT [Wb _aX]c[] OcaUSUSPS\ 2WS /caTºV`c\U RWSaS` USaQVOQVbSZbS\ ;SbV]RS\ S`T]ZUb \OQVSW\O\RS` d]\ ZW\Ya PS UW\\S\R
'XHKOZKTSOZ3KZNUJKTJKXSOZMKROKLKXZKT1RGYYK*KIOSGR,UXSGZ
2Oa \ÉQVabS 0SWa^WSZ RS[]\ab`WS`b dS`aQVWSRS\S ;rUZWQVYSWbS\ Tº` ROa 4]`[ObWS`S\ c\R /caUSPS\ d]\ 2ShW[OZhOVZS\ 5ShSWUb eW`R eSZQVS ;rUZWQVYSWbS\ Sa UWPb Tº` ^`W[WbWdS Bg^S\ c\R Tº` Bg^S\ RS` 9ZOaaS 1XV3TRX\P[ ?a^VaP\\ IPW[T] ) 5^a\PcXTaT] d]S 0dbVTQT] e^] 3TiX\P[iPW[T] import java.text.DecimalFormat; import java.math.*; class Zahlen01 { public static void main(String[] args)
{
// Primitive Datentypen runden / aufbereiten double zahl1 = 0.15780003; DecimalFormat df = new DecimalFormat("##,##0.00"); System.out.println(df.format(zahl1)); // Komfortabler mit BigDecimal und MethContext BigDecimal zahl2 = new BigDecimal(0.15780003); int nachkomma = 3; MathContext mc = new MathContext(nachkomma, RoundingMode.HALF_UP); BigDecimal erg = zahl2.round(mc); System.out.println(erg); } } 4º` ROa /`PSWbS\ [Wb RS` DO`WOPZS\ iPW[! eS`RS\ \OQVSW\O\RS` R`SW ;SbV]RS\ OcT US`cTS\( hc\ÉQVab eW`R [Wb ]Tf SW\S 7\abO\h RS` 9ZOaaS
!
(( merker2.doc
Stand: 22.12.2005 13:39:00 ))
;»bd]Vbe^abRW[PV)
import java.text.DecimalFormat; import java.math.*; class Zahlen02 { public static void main(String[] args) { BigDecimal zahl1 = new BigDecimal(0.15780003); System.out.println(zahl1.round(new MathContext(3, RoundingMode.HALF_UP))); } }
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# 4XVT]T
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EOa Wab \c\ hc PSOQVbS\ eS\\ SW\S \WQVbOcaTºV`PO`S 9ZOaaS [Wb \ScS\ ;SbV]RS\ S`abSZZb c\R PS\cbhb eW`R- EW` hSWUS\ SW\WUS 0SWa^WSZS PSW RS\S\ SWUS\abÉ\RWUS OP USaQVZ]aaS\S /cTUOPS\ W\ \ScS 9ZOaaS\ OcaUSZOUS`b eS`RS\ RO[Wb aWS RO\\ d]\ RW dS`aS\ O\RS`S\ >`]U`O[[S\ US\cbhb eS`RS\ Yr\\S\ !!
(( merker2.doc
Stand: 22.12.2005 13:39:00 ))
'XHKOZKTSOZYZGZOI3KZNUJKT1RGYYKT3KZNUJKT
2WS /cTUOPS\abSZZc\U Tº` T]ZUS\RS \Sc hc S`abSZZS\RS 9ZOaaS ZOcbSb( 3a a]ZZS\ 2ObS\ d]\ BhbcT\ X] SW\USZSaS\ OZa ES`bS d][ Bg^ S^dQ[T W\bS`^`SbWS`b c\R O\ RS\ /cT`c TS` RS` ;SbV]RS ºPS`USPS\ eS`RS\ ?a^VaP\\ ;TbT]) 4X]T 7X[UbZ[PbbT \Xc TX]Ta ;TbT`]U`O[[ ZSRWUZWQV RWS C[eO\RZc\U Wab [rUZWQV 7[ heSWbS\ AQV`Wbb S`abSZZS\ eW` SW\ OcaTºV`PO`Sa >`]U`O[[ ROa RWS 2WS\abZSWabc\U RWSaS` 9ZOaaS ;TbT] \cbhb Rc`QV /cT`cT RS` ;SbV]RS [XTb3^dQ[T ?a^VaP\\ ;TbT]CTbc ) 4X][TbT] d]S 0dbVTQT] e^] 3^dQ[TFTacT] public class LesenTest01 { public static void main(String[] args) throws Exception double d = Lesen.liesDouble(); System.out.println(d); } }
{
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(( merker2.doc
Stand: 22.12.2005 13:39:00 ))
# 4XVT]T
;»bd]Vbe^abRW[PV bcPcXR`]U`O[[a VOPS\ W\ RWSaS[ 4OZZ RS\ 2ObSW\O[S\
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{
!#
(( merker2.doc
Stand: 22.12.2005 13:39:00 ))
double d = obj1.liesDouble(); System.out.println(d); } }
ÎQd]V id\ ?a^VaP\\ `]U`O[[
(( merker2.doc
Stand: 22.12.2005 13:39:00 ))
$
} } class A { int x = 5; static int addieren(int a, int b) { return a + b + x; } } ÎQd]V id\ ?a^VaP\\ `]U`O[[ a] ROaa Sa TSVZS`T`SW ZÉcTb 6W\eSWaS( 2WS ;SbV]RS RO`T \WQVb bcPcXR aSW\ eSWZ aWS OcT RWS 7\abO\hdO`WOPZS f hcU`SWTb 2WS ;SbV]RS [caa OcT US`cTS\ eS`RS\ [Wb SW\S[ 7\abO\h\O[S\ c\R \WQVb [Wb RS[ 9ZOaaS\\O[S\
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(( merker2.doc
Stand: 22.12.2005 13:39:00 ))
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(( merker2.doc
Stand: 22.12.2005 13:39:00 ))
$
ÎQd]V !( ;OQVS\ AWS RWS ES`bShceSWac\U W\ RS` ;SbV]RS PdbVTQT] hc SW\S[ 9][[S\bO` ESZQVS 4SVZS`[SZRc\U Y][[b PSW RS` C[eO\RZc\U EO`c[ Wab ROa a]- ÎQd]V ") 4ºUS\ AWS RS` \PX];SbV]RS OZa ZSbhbSa AbObS[S\b RS\ T]ZUS\RS\ /caUO PSPSTSVZ VW\hc( System.out.println("Die Variable i enthält: " + i)); EO`c[ TºV`b RWSaS` DS`acQV hc SW\S[ C[eO\RZc\UaTSVZS`- EWS YO\\ RS` 4SV ZS` c[UO\US\ eS`RS\- :rac\UaVW\eSWa( 2WS 2SYZO`ObW]\ RS` DO`WOPZS\ W RO`T \WQVb W[ 9]^T RS` 5^aAQVZSWTS d]`US\][[S\ eS`RS\ eSWZ RWSaS RORc`QV hc SW\S` Z]YOZS\ DO`WOPZS\ Tº` RWSaS\ /\eSWac\UaPZ]QY eW`R :]YOZS DO`WOPZS aW\R W[[S` RO\\ aW\\d]ZZ eS\\ HeWaQVS\S`USP\WaaS USa^SWQVS`b ]RS` bS[^]`É`S HcabÉ\RS TSabUSVOZbS\ eS`RS\ [ºaaS\ RWS \OQV /PZOcT SW\Sa 0Z]QYa \WQVb [SV` PS\rbWUb eS`RS\
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public class Methode11 { public static void main (String[] args) { A a = new A(); System.out.println(a.addieren(5,3)); System.out.println(a.addieren(15.3, 27.9)); } } class A { int addieren(int a, int b) { System.out.println("Ganzzahlen addieren"); return a + b; } double addieren(double a, double b) { System.out.println("Gleitkommazahlen addieren"); return a + b; } k EOa Wab RS` D]`bSWZ RWSaS` BSQV\WY- 2c`QV RWS ;rUZWQVYSWb ;SbV]RS\ hc ºPS`ZORS\ YO\\ RS` >`]U`O[[WS`S` UZSWQVS\ 4c\YbW]\OZWbÉbS\ RS\aSZPS\
(( merker2.doc
Stand: 22.12.2005 13:39:00 ))
eS\\ aWS d]\ dS`aQVWSRS\S\ ;SbV]RS\ OcaUSTºV`b eS`RS\ 2ORc`QV eW`R ROa >`] U`O[[ ZSaPO`S` c\R ;SbV]RS\OcT`cTS dS`abÉ\RZWQVS`
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0SW RS` /caTºV`c\U SW\S` ;SbV]RS YO\\ Sa hc :OcThSWbTSVZS`\ Y][[S\ 8S \OQV /`b RSa 4SVZS`a eW`R RS` >`]U`O[[WS`S` S\beSRS` UShec\US\ RWS @SOYbW]\ RO`OcT aSZPab hc ^`]U`O[[WS`S\ ]RS` RWS AbScS`c\U eW`R eS\\ \WQVba O\RS`Sa Q]RWS`b Wab O\ RWS 8D; ºPS`USPS\ RWS RO\\ S\ba^`SQVS\RS /YbW]\S\ Rc`QVTºV`b ?a^VaP\\ BcP]SPaS8] !) ;PdUiTXcUTW[Ta QTWP]ST[] Qif fTXcTa aTXRWT] class StandardIn02 { public static void main(String[] args) throws Exception int zeichen1 = System.in.read(); System.out.println(zeichen1); } }
{
2c`QV RWS /\UOPS throws Exception PSabW[[b RS` >`]U`O[[WS`S` ROaa SdS\ bcSZZS 4SVZS` W\ RWSaS` ;SbV]RS \WQVb W\RWdWRcSZZ PSVO\RSZb eS`RS\ a]ZZS\ a]\RS`\ O\ RWS \ÉQVabVrVS`S 3PS\S eSWbS` US`SWQVb eS`RS\ W\ RWSaS[ 4OZZ O\ RWS 8D; ÎQd]V id\ ?a^VaP\\ BcP]SPaS8] ! >`ºTS\ AWS eSZQVS 4SVZS`[SZRc\U RS` 1][^WZS` ZWSTS`b eS\\ RWS 9ZOcaSZ bV`]ea 3fQS^bW]\ W[ ?cSZZbSfb TSVZb 4OhWb( 7[ 9]^T SW\S` ;SbV]RS Yr\\S\ 7\T]`[ObW]\S\ Tº` RS\ /cT`cTS` c\R Tº` RS\ 1][^WZS` Q]RWS`b eS`RS\ 2Ohc USVr`b c\bS` PSabW[[bS\ C[abÉ\RS\ RWS 7\T]`[ObW]\ bV`]ea 3fQS^bW]\ RWS O\hSWUb ROaa \WQVb OcahcaQVZWSzS\ Wab ROaa W\\S`VOZP SW\S` ;SbV]RS SW\ :OcThSWbTSVZS` OcTb`SbS\ YO\\ RS` RO\\ OPS` \WQVb W\\S`VOZP RWSaS` ;S bV]RS OPUSTO\US\ eW`R a]\RS`\ d]\ RS[ /cT`cTS` PSVO\RSZb eS`RS\ [caa
6GXGSKZKXHKXMKHKT[TJKSVLGTMKT
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(( merker2.doc
Stand: 22.12.2005 13:39:00 ))
% ?PaP\TcTa ¶QTaVTQT] d]S T\_UP]VT]
2S` /cT`cTS` [caa RWS AQV\WbbabSZZS Tº` RS\ ;SbV]RS\OcT`cT YS\\S\ R V S` [caa \WQVb \c` RWS 2ObS\bg^S\ RWS S`eO`bSb eS`RS\ YS\\S\ S` [caa OcQV eWaaS\ O\ fT[RWTa >]aWbW]\ W\ RS` >O`O[SbS`ZWabS fT[RWTa Bg^ S`eO`bSb eW`R 0ZcdT[[T ?PaP\TcTa 0SW[ /cT`cT RS` ;SbV]RS [caa Tº` XSRS\ T]`[OZS\ >O`O[SbS` SW\ ^OaaS\RSa /`Uc [S\b ºPS`USPS\ eS`RS\ 2WS /`Uc[S\bS eS`RS\ PZcdT[[T ?PaP\TcTa US\O\\b AWS [ºaaS\ d][ Bg^ VS` ^OaaS\ c\R eS`RS\ ^]aWbW]\aUS\Oc eWS d][ 3[^TÉ\US` US T]`RS`b ºPS`USPS\ 2WS T]`[OZS\ >O`O[SbS` eW`YS\ eWS >ZObhVOZbS` Tº` RWS ES`bS RS` OYbcSZZS\ >O`O[S bS` 7\\S`VOZP RS` ;SbV]RS dS`VOZbS\ aWQV RWS T]`[OZS\ >O`O[SbS` eWS Z]YOZS DO`WOP ZS\ RWS W\WbWOZWaWS`b eS`RS\ W\RS[ RS` ES`b RS` OYbcSZZS\ >O`O[SbS` W\ RWSaS A^SW QVS`hSZZS\ Y]^WS`b eS`RS\ ?a^VaP\\ ;TTaiTX[T] )
public class Leerzeilen01 { public static void main (String[] args) { leerzeilen(5); } static void leerzeilen(int anzahl) { System.out.println("Nun werden " + anzahl + "Leerzeilen ausgegeben"); for (int i = 1; iO`O[SbS` /`Uc[S\bS Yr\\S\ PSW[ /cT`cT O\USUSPS\ eS`RS\( DO`W OPZS :WbS`OZS ]RS` /caR`ºQYS /Za 2ObS\bg^ aW\R ^`W[WbWdS c\R OcQV @STS`S\hbg^S\ [rUZWQV ÎQd]V id\ ?a^VaP\\ ;TTaiTX[T] 0WbbS É\RS`\ AWS ROa >`]U`O[[ a] OP ROaa heSW >O`O[SbS` ºPS`USPS\ eS`RS\( SW\ RWPaES`b c\R SW\ X]cES`b 2O\\ a]ZZ RWS ;SbV]RS RS\ RWPaES`b a] ]Tb OcaUSPS\ eWS W\ RS` 5O\hhOVZ O\USUSPS\ 0SWa^WSZ( EW`R OZa /`Uc[S\bS O # ºPS`USPS\ a] a]ZZ Tº\T[OZ RS` 0cQVabOPS O OcaUSUSPS\ eS`RS\
"
(( merker2.doc
Stand: 22.12.2005 13:39:00 ))
=OK]KXJKT6GXGSKZKXHKXMKHKT%
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void berechnen(int z1, int z2, String s, float z3);
0dUadU Rc`QV(
berechen(zahl1,zahl2,text,zahl3);
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2S` /cT`cT SW\S` ;SbV]RS S`T]ZUb W[[S` a] ROaa RWS ES`bS RS` >O`O[SbS` Y]^WS`b c\R RWSaS 9]^WS\ O\ RS\ /cT`cTS` ºPS`b`OUS\ eS`RS\ R V W\ RWS A^SWQVS`hSZZS RS` T]`[OZS\ >O`O[SbS` Y]^WS`b eS`RS\ 2WSaS` ;SQVO\Wa[ca eW`R 1/:: 0G D/:C3 US\O\\b 2]QV [caa [O\ ROPSW U`c\RaÉbhZWQV heWaQVS\ RS\ heSW /`bS\ d]\ 2ObS\bg^S\ ^`W [WbWdS Bg^S\ c\R @STS`S\hbg^S\ c\bS`aQVSWRS\
"
(( merker2.doc
Stand: 22.12.2005 13:39:00 ))
% ?PaP\TcTa ¶QTaVTQT] d]S T\_UP]VT]
6XOSOZO\K:_VKTGRY6GXGSKZKX
2Oa \OQVT]ZUS\RS >`]U`O[[ RS[]\ab`WS`b eWS RWS >O`O[SbS`ºPS`UOPS S`T]ZUb eS\\ Sa aWQV c[ ^`W[WbWdS 2ObS\bg^S\ VO\RSZb ?a^VaP\\
class Methode12 { public static void main (String[] args) { double zahl = 123.45; aendern(zahl); System.out.println(zahl); } static public void aendern(double zahl) { zahl = zahl + 200; System.out.println(zahl); } } /caUSUSPS\ eS`RS\ ! ! "# c\R ! "# 2Oa hSWUb ROaa RS` 7\VOZb RS` DO`WOPZS\ iPW[ aWQV W\ RS` 6Oc^b[SbV]RS \PX] \WQVb USÉ\RS`b VOb eSWZ \É[ZWQV RWS ;SbV]RS PT] STa] [Wb SW\S` 9]^WS RS` 2ObS\ O`PSWbSb
2WS 9ZOaaS ?d]Zc YPeP PWSbSb T]ZUS\RS\ AS`dWQS( AWS YO\\ RWS ES`bS Tº` SW\S >]aW bW]\ OcT SW\S` F c\R SW\S` G/QVaS a^SWQVS`\ c\R ºPS`^`ºTb PSW 0SRO`T ]P PSWRS 5O\hhOVZS\eS`bS RS\ ES`b S\bVOZbS\ 2O\\ eW`R SW\S ;SZRc\U O[ 1]\a]ZPWZR aQVW`[ OcaUSUSPS\ ?a^VaP\\ ?d]Zc ) 4\_UP]VT] e^] X]cFTacT] P[b ?PaP\TcTa public class Punkt01 { private int x; private int y; void speichern(int a, int b) { x = a; y = b; } void pruef() { if (x < 0 || y < 0) System.out.println("Der Punkt liegt ausserhalb"); else System.out.println("Der Punkt liegt im Fenster"); } }
"!
(( merker2.doc
Stand: 22.12.2005 13:39:00 ))
{
7\ RS[ d]`ZSbhbS\ AbObS[S\b eW`R RWS ;SbV]RS b_TXRWTa] OcTUS`cTS\ c\R ROPSW RWS OYbcSZZS\ >O`O[SbS` O c\R P ºPS`USPS\ 2WS OYbcSZZS\ ES`bS RS` PSWRS\ DO`WOPZS\ eS`RS\ Y]^WS`b c\R RO\\ RWSaS 2c^ZWYObS O\ ;SbV]RS b_TXRWTa] ºPS`b`OUS\ ÎQd]V id\ ?d]Zc 0WbbS É\RS`\ AWS RWS ;SbV]RS b_TXRWTa] a] OP ROaa AWS RWS DO`WOPZS O [Wb RS[ ES`b TºZZS\ ES`bShceSWac\U 4ºUS\ AWS RO\\ W[ >`]U`O[[ ?d]ZcCTbc RWS T]ZUS\RS HSWZS VW\hc c\R ºPS`^`ºTS\ AWS ROa 3`USP\Wa( System.out.println(a);
8KLKXKT`Z_VKTGRY6GXGSKZKX
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(( merker2.doc
Stand: 22.12.2005 13:39:00 ))
% ?PaP\TcTa ¶QTaVTQT] d]S T\_UP]VT]
else System.out.println("Der Punkt liegt im Fenster"); } void addieren(Punkt02 p2) { x = x + p2.x; y = y + p2.y; } } 2O\OQV É\RS`\ eW` ROa 1ZWS\b^`]U`O[[ ?d]ZcCTbc a] ROaa SW\S heSWbS 7\abO\h S`hScUb eW`R c\R RWSaS OZa >O`O[SbS` O\ RWS PSSXcX^]b;SbV]RS ºPS`USPS\ eW`R ?a^VaP\\ ?d]ZcCTbc !)
public class PunktTest02 { public static void main(String[] args) int a = 5; int b = 3; Punkt02 p = new Punkt02(); p.speichern(a, b); Punkt02 p2 = new Punkt02(); p.addieren(p2); } }
{
ÎQd]V id\ ?a^VaP\\ ?d]ZcCTbc ! 3`UÉ\hS\ AWS RWS ;SbV]RS PSSXTaT] W\ RS` 9ZOaaS ?^bXcX^] ! YPeP c[ T]ZUS\RS /\ eSWac\U( p2.x = -17; 2ORc`QV eW`R SW\ 3ZS[S\b RSa ^ =PXSYba USÉ\RS`b 2OPSW W\bS`SaaWS`b c\a PSa]\RS`a RWS 4`OUS ]P RWSaS Ò\RS`c\U OcQV W[ =`WUW\OZ]PXSYb Rc`QVUSTºV`b ec`RS >`ºTS\ AWS RSaVOZP W[ >`]U`O[[ ?^bXcX^]CTbc ! YPeP ]P RWSaS Ò\RS`c\U VWS` eW`Y aO[ USe]`RS\ Wab Rc`QV /cT`cT RS` ;SbV]RS _adTU Tº` RWSaSa =PXSYb( p2.pruef(); 3a [caa RWS 7\T]`[ObW]\ Y][[S\ 2S` >c\Yb ZWSUb OcaaS`VOZP 2O[Wb Wab T]ZUS\RSa PSeWSaS\( 0SW RS` ÍPS`UOPS d]\ 7\abO\hS\ OZa >O`O[SbS` eW`R RWS @STS`S\hdO`WOPZS Y]^WS`b c\R RWSaS 9]^WS eW`R O\ RWS OcTUS`cTS\S ;SbV]RS ºPS`b`OUS\ 2O[Wb VOb RWS ;SbV]RS RWS =`WUW\OZOR`SaaS RS` 7\abO\h 8SRS ;O\W^cZObW]\ O\ RWSaS[ =PXSYb dS`É\RS`b a][Wb ROa =`WUW\OZ]PXSYb 4OhWb( 0SW RS` ÍPS`UOPS d]\ @STS`S\hdO`WOPZS\ OZa >O`O[SbS` Wab RWS EW`Yc\U RWSaSZ PS eWS PSW 1OZZ Pg @STS`S\QS( 2S` 3[^TÉ\US` O`PSWbSb [Wb RS[ =`WUW\OZ 8SRS Ò\RS `c\U eW`Yb aWQV OcQV PSW RS[ /cT`cTS` RS` ;SbV]RS Oca "#
(( merker2.doc
Stand: 22.12.2005 13:39:00 ))
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(( merker2.doc
Stand: 22.12.2005 13:39:00 ))
% ?PaP\TcTa ¶QTaVTQT] d]S T\_UP]VT]
3YYKT6GXGSKZKXZ_VKTHKOS3KZNUJKTG[LX[LK^GQZHKXKOTYZOSSKT%
;ºaaS\ RWS 2ObS\bg^S\ RS` OYbcSZZS\ >O`O[SbS` SfOYb ºPS`SW\abW[[S\ [Wb RS\ Bg ^S\ RS` T]`[OZS\ >O`O[SbS` <SW\ OPS` aWS [ºaaS\ hceSWac\Ua Y][^ObWPSZ aSW\ R V aWS [ºaaS\ ]V\S Sf^ZWhWbSa 1OabW\U aWSVS 9O^WbSZ # c[eO\RSZPO` aSW\ W\ RS\ USeº\aQVbS\ Bg^ 3W\S ^`]PZS[Z]aS C[eO\RZc\U d]\ 2ObS\bg^S\ Wab W[[S` RO\\ [rUZWQV eS\\ RORc`QV YSW\ 7\T]`[ObW]\adS`Zcab OcTb`Wbb ?a^VaP\\ ;TTaiTX[T] ") ÎQTaVPQT e^] bW^acCh_ 4\_UP]V P[b X]cCh_ public class Leerzeilen03 { public static void main (String[] args) short zahl = 5; leerzeilen(zahl); } static void leerzeilen(int anzahl) { for (int i = 1; i
{
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0SW[ /cT`cT SW\S` ;SbV]RS Yr\\S\ RWS OYbcSZZS\ >O`O[SbS` OZa DO`WOPZS OZa :WbS`OZ ]RS` OZa /caR`cQY O\USUSPS\ eS`RS\ 2Oa \OQVT]ZUS\RS >`]U`O[[ RS[]\ab`WS`b eWS RWS >O`O[SbS`ºPS`UOPS OZa /caR`cQY Q]RWS`b eS`RS\ YO\\ ?a^VaP\\ ;TTaiTX[T] #) ?PaP\TcTa X] 5^a\ TX]Tb 0dbSadRZb
public class Leerzeilen04 { public static void main (String[] args) int zahl = 5; leerzeilen(zahl / 2 + 1); } static void leerzeilen(int anzahl) { for (int i = 1; i
{
"%
(( merker2.doc
Stand: 22.12.2005 13:39:00 ))
<WQVb W[[S` Wab Sa [rUZWQV PSW RS` 2SYZO`ObW]\ SW\S` ;SbV]RS RWS US\OcS /\hOVZ RS` hc ºPS`USPS\S\ >O`O[SbS` O\hcUSPS\ 2SaVOZP UWPb Sa RWS ;rUZWQVYSWb SW\S dO `WOPZS /\hOVZ hc RSYZO`WS`S\ 2WSa USaQVWSVb Rc`QV 1]RWS`S\ d]\ ! >c\YbS\ heW aQVS\ RS[ Bg^ c\R RS[ 7RS\bWTWS` ?a^VaP\\ EPa0aVb ) EPaXPQ[T 0]iPW[ ?PaP\TcTa T\_UP]VT] public class VarArgs01 { public static void main (String[] args) ausgabe("Roman", "Erwin"); } static void ausgabe(String ... namen) { for (String n : namen) { System.out.println("Hallo " + n); } } }
{
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0SW[ /cT`cT d]\ ;SbV]RS\ Wab hc c\bS`aQVSWRS\ heWaQVS\ ;SbV]RS\ RWS SW\S\ @ºQYUOPSeS`b ZWSTS`\ c\R ;SbV]RS\ RWS ZSRWUZWQV SW\S /cTUOPS S`TºZZS\ OPS` YSW\ 3`USP\Wa O\ RS\ /cT`cTS` hc`ºQYUSPS\ ;O\QV[OZ eS`RS\ RWSaS PSWRS\ c\bS`aQVWSR ZWQVS\ /`bS\ d]\ C\bS`^`]U`O[[S\ OcQV OZa 4c\YbW]\ [Wb @ºQYUOPSeS`b c\R >`] hSRc` ]V\S @ºQYUOPSeS`b PShSWQV\Sb 7\ 8OdO UWPb Sa RWSaS C\bS`aQVSWRc\U \WQVb PSWRS /`bS\ aW\R OZa ;SbV]RS\ hc W[^ZS[S\bWS`S\ Hc\ÉQVab [caa RScbZWQV USaOUb eS`RS\ ROaa [OfW[OZ TX] 3`USP\WaeS`b O\ RS\ /cT `cTS` ºPS`b`OUS\ eS`RS\ YO\\ ;SV` OZa SW\ ES`b Wab \WQVb [rUZWQV 2WSa Wab RSaeS US\ OPS` YSW\ eW`YZWQVSa >`]PZS[ eSWZ R]QV [SV`S`S DO`WOPZS\ hcaO[[S\USTOaab eS`RS\ Yr\\S\ h 0 OZa /``Og OZa =PXSYb ]RS` OZa SW\S 1]ZZSQbW]\ d]\ 7\abO\hS\ ES\\ RWS OcTUS`cTS\S ;SbV]RS SW\ 3`USP\Wa O\ RS\ /cT`cTS` ZWSTS`b a] [caa RWSa PSW RS` 2SYZO`ObW]\ RS` ;SbV]RS TSabUSZSUb eS`RS\ 7[ 9]^T RS` ;SbV]RS abSVb RS` 2ObS\bg^ RSa 3`USP\WaaSa c\R RO\\ \dbb RWS 7[^ZS[S\bWS`c\U OcQV [Wb RS[ AQVZºaaSZe]`b aTcda] ROa 3`USP\Wa ZWSTS`\ 5ZSWQVhSWbWU eW`R RWS ;SbV]RS a]T]`b dS` ZOaaS\ eS\\ aTcda] OcaUSTºV`b eW`R 7\\S`VOZP SW\S` ;SbV]RS YO\\ aTcda] [SV`TOQV OZbS`\ObWd Q]RWS`b eS`RS\ 2S` /cT`cT SW\S` ;SbV]RS [Wb @ºQYUOPSeS`b S`T]ZUb Rc`QV(
ergebnis = objekt.methode(parameter);
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"&
(( merker2.doc
Stand: 22.12.2005 13:39:00 ))
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(( merker2.doc
Stand: 22.12.2005 13:39:00 ))
2Oa T]ZUS\RS >`]U`O[[ S`[WbbSZb Oca heSW UO\hhOVZWUS\ ES`bS\ RS\ U`rzbS\ US [SW\aO[S\ BSWZS` 2OPSW eSWQVS\ RWS 2ObS\bg^S\ RS` T]`[OZS\ >O`O[SbS` d]\ RS\ Bg^S\ RS` OYbcSZZS\ >O`O[SbS` OP c\R OcQV RS` @Sbc`\bg^ Wab O\RS`a RSYZO`WS`b OZa RS` ES`b RS` 3`USP\WadO`WOPZS\ EWQVbWU ROPSW Wab ROaa RWS Bg^S\ hceSWac\UadS` b`ÉUZWQV aW\R ?a^VaP\\ ATcda] ) IdfTXbd]VbeTacaÊV[XRWT 3PcT]ch_T] public class Return01 { public static void main (String[] args) { short zahl1 = 15; short zahl2 = 48; System.out.println(teiler(zahl1, zahl2)); } static int teiler(int z1, int z2) { int rest; do { rest = z1 % z2; z1 = z2; z2 = rest; } while (rest > 0); return z1; } l 6W\bS` aTcda] YO\\ SW\ /caR`cQY abSVS\ 2S` Bg^ RWSaSa /caR`cQYa PSabW[[b RS\ @ºQYUOPSbg^ RS` ;SbV]RS ?a^VaP\\ ATcda] !) 4X] 0dbSadRZ P[b A¶RZVPQTfTac public class Return02 { public static void main (String[] args) System.out.println(ausgabe("Erwin")); } static String ausgabe(String name) { return "Hallo " + name; } }
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#
(( merker2.doc
Stand: 22.12.2005 13:39:00 ))
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(( merker2.doc
Stand: 22.12.2005 13:39:00 ))
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(( merker2.doc
Stand: 22.12.2005 13:39:00 ))
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(( merker2.doc
Stand: 22.12.2005 13:39:00 ))
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System.out.println(nr + " " + name); } void setName(String name1) { name = name1; } } 7[ 0]Rg eS`RS\ RWS 3ZS[S\bS RS` 9ZOaaS RWS ;S[PS` RSTW\WS`b 2Ohc USVr`S\ RWS 4SZRS` /bb`WPcbS c\R RWS ;SbV]RS\ 2WS 4SZRS` aW\R [Wb RS[ OQQSaa []RWTWS` _aXePcT RSYZO`WS`b RO[Wb eW`R TSabUSZSUb ROaa aWS \c` d]\ ;SbV]RS\ RWSaS` 9ZOaaS US ZSaS\ ]RS` dS`É\RS`b eS`RS\ Yr\\S\ 2WS @SWVS\T]ZUS RS` 3ZS[S\bS W[ ?cSZZbSfb a^WSZb YSW\S @]ZZS 2WS 4SZRS` Yr\\bS\ OcQV O[ 3\RS RSa 0]Rga OcTUSTºV`b eS`RS\ c\R OcQV RWS @SWVS\T]ZUS RS` ;SbV] RS\ a^WSZb YSW\S @]ZZS aWS eS`RS\ SV \c` RO\\ OcaUSTºV`b eS\\ aWS Sf^ZWhWb OcTUS `cTS\ eS`RS\ ÎQd]V id\ ?a^VaP\\ ?Pac]Ta 3RWbWS`S\ c\R Q][^WZWS`S\ AWS ROa >`]U`O[[ 2WS C[eO\RZc\U [caa TSVZS`T`SW [rU ZWQV aSW\ >`]PWS`S\ AWS ]P RWSa >`]U`O[[ OcaUSTºV`b eS`RS\ YO\\ ESZQVS 4SVZS` [SZRc\U Y][[b PSW[ AbO`bS\- 3^dVW]dc3XPVaP\\ 3W\S O\RS`S /`b RS` 2O`abSZZc\U d]\ 9ZOaaS\ c\OPVÉ\UWU d]\ C;: Wab ROa 9`SWaRWO U`O[[ R]cUV\cbRWOU`O[) R]\cb a] VSWzS\ TSbbWUS S\UZWaQVS `W\UTr`[WUS 9cQVS\ abºQYS 2WS 9ZOaaS ?Pac]Ta eW`R OZa 2]cUV\cb2WOU`O[[ eWS T]ZUb RO`USabSZZb(
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(( merker2.doc
Stand: 22.12.2005 13:39:00 ))
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(( merker2.doc
Stand: 22.12.2005 13:39:00 ))
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(( merker2.doc
Stand: 22.12.2005 13:39:00 ))
" <XcVT[XTUTacT :[PbbT QT]dciT]
?a^VaP\\ ?Pac]Ta !) :[PbbT \Xc 4[T\T]cT] d]S TX]Ta \PX]
public class Partner02 { public static void main(String[] args) { Partner02 g1 = new Partner02(); g1.neu(4700, "Meyer"); g1.ausgeben(); } private int nr; private String name; void neu(int nr1, String name1) { nr = nr1; name = name1; } void ausgeben() { System.out.println(nr + " " + name); } void setName(String name1) { name = name1; } } ÎQd]V id\ ?a^VaP\\ ?Pac]Ta ! 3`UÉ\hS\ AWS ROa >`]U`O[[ ?Pac]Ta ! a] ROaa SW\S heSWbS 7\abO\h S`hScUb eW`R 2S` 7\abO\h\O[S a]ZZ aSW\( U 2WS ES`bS aW\R " Tº` RWS 9c\RS\\c[[S` c\R AQVcZh Tº` RS\
3OZMKROKLKXZK1RGYYKHKT[Z`KT
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#%
(( merker2.doc
Stand: 22.12.2005 13:39:00 ))
:[PbbT] QTbRWaTXQT] d]S QT]dciT]
(KOYVOKR 'XHKOZKTSOZJKX1RGYYK-XKMUXOGT)GRKTJGX
/ZZSW\ Tº` ROa /`PSWbS\ [Wb 2Obc[ c\R CV`hSWb UWPb Sa hOVZ`SWQVS d]`USTS`bWUbS :r ac\US\ OPVÉ\UWU d]\ HSWbh]\S\ c\R Z]YOZS\ 0Sa]\RS`VSWbS\ AWS aW\R BSWZ RSa AbO\RO`R/>7 2O Sa eSZbeSWb c\bS`aQVWSRZWQVS 9OZS\RS` UWPb RWS c O OPVÉ\UWU aW\R d][ 0SUW\\ RS` HSWb`SQV\c\U VOPS\ RWS 8OdO3\beWQYZS` SW\S A^ShWOZWaWS`c\U SW\US TºV`b \É[ZWQV RS\ 6aTV^aXP]2P[T]SPa 2WS 2]Yc[S\bObW]\ S\bVÉZb ROTº` SW\S Oca TºV`ZWQVS 0SaQV`SWPc\U 6WS` SW\ /caaQV\Wbb( java.util Class
GregorianCalendar
Field Summary static int AD
Value of the ERA field indicating the common era (Anno Domini), also known as CE.
static int BC
Value of the ERA field indicating the period before the common era (before Christ), also known as BCE.
is a concrete subclass of Calendar and provides the standard calendar system used by most of the world.
GregorianCalendar
Constructor Summary Constructs a default GregorianCalendar using the current time in the default time zone with the default locale.
GregorianCalendar()
GregorianCalendar(int year, int month, int dayOfMonth) Constructs a GregorianCalendar with the given date set in the
default
time zone with the default locale
Method Summary void add(int field, int amount)
Adds the specified (signed) amount of time to the given calendar field, based on the calendar's rules.
Object clone()
Creates and returns a copy of this object.
proteccomputeFields() Converts the time value ted void from the Epoch) to calendar field values.
(millisecond offset
#&
(( merker2.doc
Stand: 22.12.2005 13:39:00 ))
" <XcVT[XTUTacT :[PbbT QT]dciT]
Returns the value of the given calendar field. /PP "( />72]Yc[S\bObW]\ RS` 9ZOaaS 6aTV^aXP]2P[T]SPa 2WS 3ZS[S\bS RS` 9ZOaaS eS`RS\ W\ R`SW /PaQV\WbbS\ S`ZÉcbS`b( 5XT[S Bd\\Pah R]Yc[S\bWS`b RWS 2SYZO`ObW]\ RS` 7\abO\h c\R 9ZOaaS\dO`WOPZS\ h 0 X]c 03 ]RS` 12 2WS 0SRScbc\U RS` 3ZS[S\bS YO\\ [O\ Oca RS[ 9c`hbSfb S`TOV`S\ ]RS` SbeOa OcaTºV`ZWQVS` W\RS[ [O\ OcT RS\ O`O[SbS`\O[S\ c\R RS\ 2ObS\bg^ RSa @ºQYUOPSeS`bSa 0SWa^WSZ(
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import java.util.*; public class Gregorian01 { public static void main(String[] args) { GregorianCalendar heute = new GregorianCalendar(); System.out.println(heute.get(Calendar.DAY_OF_MONTH)); System.out.println(heute.get(Calendar.MONTH)); System.out.println(heute.get(Calendar.YEAR)); } }
#'
(( merker2.doc
Stand: 22.12.2005 13:39:00 ))
:[PbbT] QTbRWaTXQT] d]S QT]dciT]
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import java.awt.*; public class Punkt02 { public static void main(String[] args) Point p1 = new Point(5,3); Point p2 = new Point(4,5); System.out.println(p1.equals(p2)); } }
{
$
(( merker2.doc
Stand: 22.12.2005 13:39:00 ))
" <XcVT[XTUTacT :[PbbT QT]dciT]
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import java.awt.*; class Farben01 { public static void main (String[] args) { Color c1 = new Color(255,0,0); Color c2 = c1.darker(); System.out.println("Farbe 1 " + c1); System.out.println("Farbe 2 " + c2); System.out.println(c1.getRed()); } } 2Oa S`abS AbObS[S\b W\ RS` \PX];SbV]RS S`hScUb SW\S 7\abO\h RS` 9ZOaaS 2^[^a 2O PSW eS`RS\ RS[ 9]\ab`cYb]` RWS R`SW 4O`PeS`bS Tº` `]b U`º\ c\R PZOc ºPS`USPS\ ÎQd]VT] id\ ?a^VaP\\ 5PaQT] ÎQd]V ) 9ZÉ`S\ AWS O\VO\R RS` />72]Yc[S\bObW]\ RWS /`PSWbeSWaS RS` ;SbV]RS\ SPaZTa c\R VTcATS ÎQd]V !) 7\abO\hWWS`S\ AWS SW\ R`WbbSa 1]Z]`]PXSYb Tº` RWS 4O`PS USZP c\R USPS\ AWS RWS =PXSYbeS`bS [Wb _aX]c[] Oca
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(( merker2.doc
Stand: 22.12.2005 13:39:00 ))
:[PbbT] QTbRWaTXQT] d]S QT]dciT]
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(KOYVOKRLXKOT.GRRU=KRZ6XUMXGSSGRYYKVGXGZK1RGYYK ?a^VaP\\ 7P[[^ ) 4X]T VP]i TX]UPRWT :[PbbT public class Hallo01 { private String text = new String("Hallo Welt"); void ausgeben() { System.out.print("Die Variable text enthaelt: "); System.out.println(text); } } 2WSaS 9ZOaaS YO\\ SW\S BcaX]VDO`WOPZS a^SWQVS`\ c\R PSW 0SRO`T Rc`QV /cT`cT RS` ;SbV]RS PdbVTQT] O[ 9]\a]ZPWZRaQVW`[ eWSRS` OcaUSPS\ 7 [WbUSZWSTS`b ÎQd]V id\ ?a^VaP\\ 7P[[^ EO\RSZ\ AWS ROa >`]U`O[[ c[ 2WSa [caa TSVZS`T`SW [rUZWQV aSW\ DS`acQVS\ AWS RO\OQV ROa >`]U`O[[ hc abO`bS\ 3a Y][[b RWS ;SZRc\U <]AcQV;SbV]R3``]`( [OW\ C[ RS\ AS`dWQS RS` 9ZOaaS 7P[[^ \cbhS\ hc Yr\\S\ PS\rbWUS\ eW` SW\ OcaTºV`PO `Sa >`]U`O[[ ROa SW\S 7\abO\h S`hScUb c\R SW\S `]U`O[[ c[ 3W\S [rUZWQVS 4SVZS`_cSZZS Wab ROaa PSW RS` C[eO\RZc\U RWS 9ZOaaS\PSaQV`SWPc\U d]\ 7P[[^ \WQVb W[ HcU`WTT Wab AbSZ $
(( merker2.doc
Stand: 22.12.2005 13:39:00 ))
# 4XVT]T :[PbbT] TabcT[[T]
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(( merker2.doc
Stand: 22.12.2005 13:39:00 ))
:[PbbT] QTbRWaTXQT] d]S QT]dciT]
?a^VaP\\ ?adTUT] ) :[PbbT SXT TX]T] 8]cTVTafTac b_TXRWTac d]S ¶QTa_a¶Uc class Pruefen01 { private int zahl = 5; boolean pruefInt() { if ((zahl % 2) == 0) return true; else return false; } } ÎQd]V id\ ?a^VaP\\ ?adTUT] 3`abSZZS\ AWS SW\ OcaTºV`PO`Sa >`]U`O[[ ROa SW\S 7\abO\h d]\ ?adTUT] S`abSZZb c\R O\ RWSaS 7\abO\h SW\S
public class PruefenClient01 { public static void main(String[] args) { Pruefen01 p = new Pruefen01(); if (p.pruefInt()) System.out.println("Die Zahl ist gerade"); else System.out.println("Die Zahl ist ungerade"); } } ÎQd]V id\ ?a^VaP\\ ?adTUT] Ò\RS`\ AWS RWS 9ZOaaS ?adTUT] YPeP a] OP ROaa ROa 4SZR iPW[ \WQVb Sf^ZWhWb W\WbWOZW aWS`b eW`R EOa ZWSTS`b XSbhb RWS ;SbV]RS _adTU8]c- 2WS 3`YS\\b\Wa eW`R aSW\ ROaa ;S[PS`dO`WOPZS\ Ocb][ObWaQV W\WbWOZWaWS`b eS`RS\ EWS ZOcbSb RS` /\TO\UaeS`b SW\S` X]cDO`WOPZS\ eS\\ \WQVba O\RS`Sa d][ >`]U`O[[WS`S` d]`USUSPS\ eW`R- 4OhWb( 8SRSa ;OZ eS\\ [Wb ]Tf SW\S 7\abO\h W[ A^SWQVS` O\USZSUb eW`R S`hScUb ROa @c\bW[SAgabS[ SW\S\ Y][^ZSbb \ScS\ AObh RS` 7\abO\hdO`WOPZS\ RWSaS` 9ZOaaS 2OPSW eS`RS\ RWSaS DO`WOPZS\ [Wb 7\WbWOZeS`bS\ d]`PSZSUb( \c[S`WaQVS ES`bS eS`RS\ [Wb
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(( merker2.doc
Stand: 22.12.2005 13:39:00 ))
# 4XVT]T :[PbbT] TabcT[[T]
A]ZZS\ RWS ;S[PS`dO`WOPZS\ [Wb W\RWdWRcSZZS\ ES`bS\ PSZSUb eS`RS\ a] YO\\ RWSa Rc`QV 1]RWS`S\ d]\ S\ba^`SQVS\RS\ :^]bcadZc^aT] `SOZWaWS`b eS`RS\ 2Oa eS`RS\ eW` W[ ºPS`\ÉQVabS\ 0SWa^WSZ HSWbO\UOPS\ RS[]\ab`WS`S\
(KOYVOKR`[S'XHKOZKTSOZ*GZ[SYGTMGHKT
4º` RWS \OQVT]ZUS\RS\ 0SWa^WSZS S`abSZZS\ eW` SW\S eSWbS`S Y][^ZSbb \ScS 9ZOaaS RWS 9ZOaaS 3Pcd\ AWS S\bVÉZb RWS 4SZRS` cPV \^]Pc c\R YPWa /czS`RS[ VOb RWSaS 9ZOaaS OZa eSWbS`S 3ZS[S\bS SW\WUS ;SbV]RS\ c[ [Wb RWSaS\ /bb`WPcbS\ hc O`PSWbS\ ?a^VaP\\ 3Pcd\ ) 3Pcd\ b_TXRWTa] d]S eTaPaQTXcT] import java.util.*; public class Datum01
{
private int tag; private int monat; private int jahr; void erstellen() { Calendar cal = new GregorianCalendar(); tag = cal.get(Calendar.DATE); monat = (cal.get(Calendar.MONTH) + 1); jahr = cal.get(Calendar.YEAR); } void ausgeben() { char c = '.'; System.out.printf("%s%s%s%s%s", tag, c, monat, c, jahr); } } 4a[ÊdcTad]VT] ida :[PbbT 3Pcd\ 2WS 9ZOaaS YO\\ 2Obc[aO\UOPS\ a^SWQVS`\ c\R aWS S\bVÉZb ;SbV]RS\ c[ RO[Wb hc O`PSWbS\ Hc[ 3`abSZZS\ RSa OYbcSZZS\ BOUSaRObc[ U`SWTb aWS hc`ºQY OcT 2WS\abZSWa bc\US\ RS` AbO\RO`RYZOaaS\ 2P[T]SPa c\R 6aTV^aXP]2P[T]SPa W\RS[ aWS SW\S 7\ abO\h RS` 9ZOaaS 6aTV^aXP]2P[T]SPa S`hScUb c\R RO\\ O\ RWSaS 7\abO\h RWS O`O[SbS` PS\cbhb RWS VTc;SbV]RS bcPcXR4SZRS` RWS ZSRWUZWQV a^`SQVS\RS
(( merker2.doc
Stand: 22.12.2005 13:39:00 ))
:[PbbT] QTbRWaTXQT] d]S QT]dciT]
2WS @SWVS\T]ZUS RS` 3ZS[S\bRSTW\WbW]\ W\ SW\S` 9ZOaaS Wab ]V\S 0SRScbc\U 2WS 9ZOa aS eW`R SW\USZSaS\ OYbWdWS`b RO\\ abSVS\ OZZS bcPcXR4SZRS` hc` DS`TºUc\U SUOZ O\ eSZQVS` AbSZZS W[ ?cSZZbSfb aWS RSTW\WS`b aW\R /ZZS O\RS`S\ 4SZRS` abSVS\ hc` DS`Tº Uc\U \OQV RS` 7\abO\hS`hScUc\U C\R ;SbV]RS\ eS`RS\ \c` OcaUSTºV`b eS\\ aWS Sf^ZWhWb OcTUS`cTS\ eS`RS\ 3XT :[PbbT 3Pcd\ QT]dciT]
9ZOaaS\ abSZZS\ AS`dWQSa hc` DS`TºUc\U RWS d]\ OcaTºV`PO`S\ >`]U`O[[S\ ]RS` d]\ O\RS`S\ 9ZOaaS\ US\cbhb eS`RS\ Yr\\S\ <]QV TSVZb RWSaSa OcaTºV`PO`S >`]U`O[[ 2Oa \OQVT]ZUS\RS >`]U`O[[ 3Pcd\2[XT]c YPeP a]ZZ RWS \Sc S`abSZZbS 9ZOaaS 3P cd\ PS\cbhS\ c[ ROa OYbcSZZS BOUSaRObc[ d]\ VScbS hc S`hScUS\ c\R W\ SW\S[ 1]\a]ZSTS\abS` OcahcUSPS\ 3`abSZZS\ AWS PWbbS SW\S \ScS C[eO\RZc\UaSW\VSWb ?a^VaP\\ 3Pcd\2[XT]c ) 2[XT]c?a^VaP\\ U¶a SXT 3Pcd\:[PbbT public class DatumClient01 { public static void main(String[] args) Datum01 heute = new Datum01(); heute.erstellen(); heute.ausgeben(); } }
{
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?a^VaP\\ ITXc) ITXcP]VPQT] b_TXRWTa] d]S eTaPaQTXcT] public class Zeit { private int stunde; private int minute; private int sekunde; Zeit(int stunde, int minute) { this.stunde = stunde; this.minute = minute; this.sekunde = 0; } Zeit(int stunde, int minute, int sekunde) { $$
(( merker2.doc
Stand: 22.12.2005 13:39:00 ))
# 4XVT]T :[PbbT] TabcT[[T]
this.stunde = stunde; this.minute = minute; this.sekunde = sekunde; } void addStunde(int st) { stunde = stunde + st; if (stunde > 24) stunde = stunde - 24; } public String toString() { String s1 = "Stunde: " + stunde + "\n"; String s2 = "Minute: " + minute + "\n"; String s3 = "Sekunde: " + sekunde + "\n"; return s1 + s2 + s3; } } 2WS 9ZOaaS S\bVÉZb SW\WUS A^`OQV[WbbSZ RWS eW` PWaVS` \c` O[ @O\RS S`ZÉcbS`b VOPS\ 3a VO\RSZb aWQV c[ T]ZUS\RS BVS[S\( •
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(( merker2.doc
Stand: 22.12.2005 13:39:00 ))
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(( merker2.doc
Stand: 22.12.2005 13:39:00 ))
$ :^]bcadZc^aT]
cWXbBRW[¶bbT[f^ac 7\\S`VOZP SW\S` ;SbV]RS YO\\ [O\ RW`SYb OcT RWS ;S[PS`dO`WOPZS\ RS` SWUS\S\ 9ZOaaS hcU`SWTS\ /R`SaaWS`b eS`RS\ aWS ºPS` RS\ SW\TOQVS\ O`O[SbS` eWS W[ >`]U`O[[ ITXc Y][[b Sa hc QYTRc ROa HcU`WTTa`SQVb _dQ[XR VOb [caa aWS W\ RS\ ROd]\ OPUSZSWbSbS\ 9ZOaaS\ OcQV _dQ[XR aSW\ ?a^VaP\\ ITXcCTbc) 0aQTXcT] \Xc STa ]Td TabcT[[cT] :[PbbT ITXc import java.util.*; public class ZeitTest { public static void main(String[] args) { // selbst erstellte Klasse benutzen Zeit z = new Zeit(7, 25); z.addStunde(2); System.out.println(z.toString()); // mitgelieferte Klasse benutzen GregorianCalendar heute = new GregorianCalendar(); int st = heute.get(Calendar.HOUR); int m = heute.get(Calendar.MINUTE); int se = heute.get(Calendar.SECOND); Zeit z2 = new Zeit(st, m, se); System.out.println(z2.toString()); } }
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(( merker2.doc
Stand: 22.12.2005 13:39:00 ))
:[PbbT] QTbRWaTXQT] d]S QT]dciT]
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public class Init01 { int zahl1; char c; float zahl2; public static void main(String[] args) { Init01 instanz1 = new Init01(); System.out.println(instanz1.zahl1); System.out.println(instanz1.zahl2); } } 0SW RS` /caTºV`c\U RWSaSa >`]U`O[[a eW`R RS` c\aWQVbPO`S AbO\RO`RY]\ab`cYb]` OcaUSTºV`b 7[ \ÉQVabS\ 0SWa^WSZ Wab SW\ 9]\ab`cYb]` OcaR`ºQYZWQV ^`]U`O[[WS`b ?a^VaP\\ 8]Xc !) 0aQTXcT] \Xc TX]T\ bT[Qbc R^SXTacT] :^]bcadZc^a
public class Init02 int zahl1; char c; float zahl2;
{
Init02(int z1, char c, int z2) { zahl1 = z1; this.c = c; zahl2 = z2; } public static void main(String[] args) { Init02 instanz1 = new Init02(15, 'a', 27); System.out.println(instanz1.zahl1); System.out.println(instanz1.c); System.out.println(instanz1.zahl2); } } %
(( merker2.doc
Stand: 22.12.2005 13:39:00 ))
$ :^]bcadZc^aT]
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(( merker2.doc
Stand: 22.12.2005 13:39:00 ))
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import java.util.*; public class Datum { int tag; int monat; int jahr; Datum() { Calendar cal = new GregorianCalendar(); tag = cal.get(Calendar.DATE); monat = (cal.get(Calendar.MONTH) + 1); jahr = cal.get(Calendar.YEAR); } Datum(int t, int m, int j) { tag = t; monat = m; jahr = j; } void ausgeben(char zeichen) { char c = zeichen; System.out.printf("%s %s %s %s %s", tag, c, monat, c, jahr); } } 2WSaS 9ZOaaS VOb heSW 9]\ab`cYb]`S\ RS` S`abS 9]\ab`cYb]` Wab SW\ AbO\RO`RY]\ab`cY b]` R V S` S`eO`bSb YSW\S /`Uc[S\bS 4º` RS\ /cT`cT RSa heSWbS\ 9]\ab`cYb]`a aW\R R`SW X]c>O`O[SbS` \]beS\RWU 8OdO eÉVZb hc` /caTºV`c\UahSWb RS\ 9]\ab`cYb]` Oca RS` ^OaaS\R Wab C\R ^OaaS\R Wab RS` 9]\ab`cYb]` RO\\ eS\\ /\hOVZ c\R Bg^ RS` ºPS`USPS\S\ /`Uc[S\bS ºPS`SW\abW[[b [Wb RS` RSYZO`WS`bS\ /\hOVZ c\R RS[ Bg^ ;O\ aOUb 8OdO \W[[b RS\ 9]\ab`cYb]` RS` RWS S`eO`bSbS AWU\Obc` VOb ?a^VaP\\ 3Pcd\CTbc ) 8]bcP]iXXTaT] d]S 0dUadUT] STb aXRWcXVT] :^] bcadZc^ab
public class DatumTest01 { public static void main(String[] args) Datum d1 = new Datum(24, 12, 2005); d1.ausgeben('|'); } }
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(( merker2.doc
Stand: 22.12.2005 13:39:00 ))
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2Oa >`]U`O[[ ATRWcTRZ YPeP S\bVÉZb SW\S 9ZOaaS\PSaQV`SWPc\U Tº` SW\ @SQVbSQY 2WS ROTº` \]beS\RWUS\ 2ObS\ aW\R heSW >]aWbW]\aO\UOPS\( ZW\Ya ]PS\ c\R `SQVba c\bS\ XSeSWZa O\USUSPS\ OZa f c\R gES`b /czS`RS[ S\bVÉZb RWS 9ZOaaS heSW 9]\ab`cYb] `S\ c\R aWS ºPS`aQV`SWPb RWS ;SbV]RS c^BcaX]V RS` 9ZOaaS >QYTRc ?a^VaP\\ ATRWcTRZ) >eTaaXST e^] eTa[^PS STb :^]bcadZc^ab import java.awt.*; import java.util.*; class Rechteck { private int x1, y1; private int x2, y2; Rechteck(int x1, int y1, int x2, int y2) { this.x1 = x1; this.y1 = y1; this.x2 = x2; this.y2 = y2; } Rechteck(Point linksoben, Point rechtsunten) { x1 = linksoben.x; y1 = linksoben.y; x2 = rechtsunten.x; y2 = rechtsunten.y; } public String toString() { return String.format("%d / %d / %d / %d", x1 , y1, x2, y2); } public static void main(String[] args) { Rechteck r1 = new Rechteck(5, 10, 20, 10); System.out.println(r1); } } <]QV SW\[OZ RS` 6W\eSWa OcT RWS ;SbV]RS c^BcaX]V) AWS Wab heO` Tº` XSRS 9ZOaaS dS` TºUPO` eSWZ aWS BSWZ RS` 9ZOaaS >QYTRc Wab eW`R OPS` W\ RWSaS[ >`]U`O[[ ºPS` aQV`WSPS\ c[ SW\S W\RWdWRcSZZS :rac\U hc PSY][[S\ %!
(( merker2.doc
Stand: 22.12.2005 13:39:00 ))
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ÎQd]V id\ ?a^VaP\\ ATRWcTRZ 3`abSZZS\ AWS SW\ heSWbSa =PXSYb a! ROPSW a]ZZ XSR]QV RS` heSWbS 9]\ab`cYb]` OcTUS `cTS\ eS`RS\ ;»bd]VbWX]fTXb( 2Ohc aW\R heSW 7\abO\hS\ RS` 9ZOaaS ?^X]c hc S`abSZZS\ 2WSaS [ºaaS\ RO\\ PSW RS` 7\abO\hWWS`c\U d]\ a! OZa >O`O[SbS` [WbUSUSPS\ eS`RS\ 7[ >OYSb YPeP Pfc UWPb Sa RWdS`aS 9ZOaaS\ c[ SW\S U`OTWaQVS 0S\cbhS`]PS`TZÉQVS hc W[^ZS[S\bWS`S\ 2Ohc USVr`S\ OcQV RWS 9ZOaaS\ ?^X]c 3X\T]bX^] c\R ATRcP]V[T 2WS 9ZOaaS ATRcP]V[T PWSbSb % dS`aQVWSRS\S 9]\ab`cYb]`S\ O\ ?a^VaP\\ ATRWcTRZ !) :[PbbT] QT]dciT] bXRW VTVT]bTXcXV import java.awt.*; public class Rechteck02 { public static void main(String[] args) { Point p1 = new Point(10,100); Dimension d1 = new Dimension(20,30); Rectangle r1 = new Rectangle(p1, d1); System.out.println(r1); } }
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(( merker2.doc
Stand: 22.12.2005 13:39:00 ))
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class Partner { private int nr; private String name; Partner(int nr1, String name1) { nr = nr1; name = name1; } void ausgeben() { System.out.println(nr + " " + name); } void setName(String name1) { %#
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class Kunde extends Partner { private double umsatz; void ausgeben() { super.ausgeben(); System.out.println("Umsatz: " + umsatz); } void setUmsatz(double umsatz) { this.umsatz = umsatz; } } ÎQd]V id\ ?a^VaP\\ :d]ST 3`UÉ\hS\ AWS RWS PSabSVS\RS ?cSZZbSfbRObSW c[ RWS 9ZOaaS :d]ST DS`acQVS\ AWS SW \S C[eO\RZc\U 2OPSW eW`R T]ZUS\RS 4SVZS`[SZRc\U OcaUSUSPS\( QO\\]b TW\R ag[P]Z Q]\ab`cQb]` >O`b\S` %$
(( merker2.doc
Stand: 22.12.2005 13:39:00 ))
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class Lieferant extends Partner01a { private float rabatt; void ausgeben() { super.ausgeben(); System.out.println("Rabatt: " + rabatt); } void setRabatt(float rabatt) { this.rabatt = rabatt; } k
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(( merker2.doc
Stand: 22.12.2005 13:39:00 ))
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(( merker2.doc
Stand: 22.12.2005 13:39:00 ))
:[PbbT] QTbRWaTXQT] d]S QT]dciT]
} class Lieferant extends Partner01a { private float rabatt; Lieferant(int nr1, String name1) { // neu super(nr1, name1); } void ausgeben() { super.ausgeben(); System.out.println("Rabatt: " + rabatt); } void setRabatt(float rabatt) { this.rabatt = rabatt; } } class Kunde extends Partner01a { private double umsatz; Kunde(int nr1, String name1) { // neu super(nr1, name1); } void ausgeben() { super.ausgeben(); System.out.println("Umsatz: " + umsatz); } void setUmsatz(double umsatz) { this.umsatz = umsatz; } } ?a^VaP\\ ?Pac]TaCTbc !) 1T]dciT] STa :[PbbT]
public class PartnerTest02 { public static void main (String[] args) { Partner01a p = new Partner01a(15, "Merker"); p.ausgeben(); Kunde k = new Kunde(12, "Schulz"); k.setUmsatz(50000); k.ausgeben(); Lieferant l = new Lieferant(21, "Meyer"); l.setRabatt(15.0f); l.ausgeben(); } } &
(( merker2.doc
Stand: 22.12.2005 13:39:00 ))
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;Wb RS\ T]ZUS\RS\ 9ZOaaS\ a]ZZ RWS DS`S`Pc\UabSQV\WY \]QV SW\[OZ O\ SW\S[ 9][ ^ZSbbPSWa^WSZ RS[]\ab`WS`b eS`RS\ Hc\ÉQVab eW`R SW\S 9ZOaaS >Qbc S`abSZZb RWS OZa =PS`YZOaaS Tº` eSWbS`S a^ShWOZWaWS`bS 9ZOaaS\ RWS\b 2WSaS C\bS`YZOaaS\ aW\R RWS 9ZOa aS 0_UT[ c\R 1Xa]T XSeSWZa OPUSZSWbSb d]\ RS` 9ZOaaS >Qbc ?a^VaP\\ >Qbc) Bd_TaZ[PbbT U¶a fTXcTaT B_TiXP[XbXTad]VT] class Obst { private String name; private float gewicht; &
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Stand: 22.12.2005 13:39:00 ))
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Obst(String n, float g) { name = n; gewicht = g; } void print() { System.out.println("Bezeichnung: " + name); System.out.println("Gewicht: " + gewicht); } } 2WS 9ZOaaS /_UTZ a]ZZ OPUSZSWbSb aSW\ d]\ RS` 9ZOaaS >Qbc aWS S`Pb OZa] RWS ;S`Y[OZS ]P\T c\R VTfXRWc a]eWS RWS 4ÉVWUYSWb _aX]c hc[ /\hSWUS\ RS` 2ObS\ \WQVb USS`Pb eW`R RS` 9]\ab`cYb]` /czS`RS[ a]ZZ aWS aSZPab SW\ hcaÉbhZWQVSa /bb`WPcb dS`eOZbS\ \É[ZWQV ROa /\POcUSPWSb ?a^VaP\\ 0_UT[) D]cTaZ[PbbT e^] >Qbc class Apfel extends Obst { private String anbaugebiet; Apfel(String a, String n, float g) { super(n, g); anbaugebiet = a; } void print() { super.print(); System.out.println("Anbaugebiet: " + anbaugebiet); } } ÎQd]V
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super.print(); System.out.println("Farbe
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public class ObstTest01 { public static void main(String[] args) { Apfel a1 = new Apfel("Boskop", "Altes Land",120); Birne b1 = new Birne("Williams Christ", "Bodensee",140); a1.print(); b1.print(); } }
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(( merker2.doc
Stand: 22.12.2005 13:39:00 ))
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ClassA () { System.out.println("Hier ist Konstruktor A"); } } class ClassB extends ClassA { ClassB() { System.out.println("Hier ist Konstruktor B"); } }
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public class Static01 { static int zaehler = 0; Static01() { zaehler++; } public static void main(String[] args) Static01 z1 = new Static01(); Static01 z2 = new Static01(); System.out.println(zaehler); } }
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Stand: 22.12.2005 13:39:00 ))
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class InterfaceTest01 { public static void main(String[] args) Interface01 schnittstelle01; } }
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public class InterfaceTest02 implements Interface01 { int zahl1; public void setZahl1(int z) { zahl1 = z; } public int getZahl1() { return zahl1; } public static void main(String[] args) { Interface01 schnittstelle01; schnittstelle01 = new InterfaceTest02(); schnittstelle01.setZahl1(5); System.out.println(schnittstelle01.getZahl1()); } } 2c`QV ROa AQVZºaaSZe]`b X\_[T\T]cb W\ RS` S`abS\ HSWZS dS`^TZWQVbSb aWQV RWS 9ZOaaS OZZS W[ 7\bS`TOQS d]`USaSVS\S\ ;SbV]RS\ OcQV hc `SOZWaWS`S\ hc W[^ZS[S\bWS`S\ 2WS HSWZS\ " c\R % S\bVOZbS\ RWSaS 7[^ZS[S\bWS`c\U C\R S`ab XSbhb Wab Sa OcQV [rU ZWQV W\ RS` \PX];SbV]RS SW\S 7\abO\h hc S`hScUS\ c\R RO[Wb hc O`PSWbS\ 2WS 7\ abO\h VOb SW\S @STS`S\hdO`WOPZS d][ Bg^ 8]cTaUPRT ]Pe]VZ ROa =PXSYb W\VOZbZWQV d][ Bg^ 8]cTaUPRTCTbc ! Wab @SUSZ( 2WS 9ZOaaS RWS ROa 7\bS`TOQS W[^ZS[S\bWS`b Wab Rc`QV DS`S`Pc\U [Wb RS[ 7\ bS`TOQS dS`Pc\RS\ 2WS 9ZOaaS Wab SW\ C\bS`bg^ RWS AQV\WbbabSZZS Wab RWS =PS`YZOaaS 3W\S DO`WOPZS RS`S\ Bg^ SW\ 7\bS`TOQS Wab YO\\ XSRSa =PXSYb `STS`S\hWS`S\ RSaaS\ 9ZOaaS RWSaSa 7\bS`TOQS W[^ZS[S\bWS`b 7[ \ÉQVabS\ 0SWa^WSZ a]ZZ SW\S 9ZOaaS ROa T]ZUS\RS 7\bS`TOQS W[^ZS[S\bWS`S\( &%
(( merker2.doc
Stand: 22.12.2005 13:39:00 ))
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interface A { int potenzieren(int z); } 2WSaSa 7\bS`TOQS dS`ZO\Ub d]\ SW\S` 7[^ZS[S\bWS`c\UaYZOaaS RWS ;SbV]RS _^cT]iXT aT] hc W[^ZS[S\bWS`S\ 3a a]ZZ RWS HeSWS`^]bS\h SW\S` 5O\hhOVZ S``SQV\Sb c\R OZa 3`USP\Wa RS[ /cT`cTS` hc`ºQYUSUSPS\ eS`RS\ ?a^VaP\\ 8]cTaUPRTCTbc ") 8\_[T\T]cXTad]V STb 8]cTaUPRT d]S 3aXeTa ?a^VaP\\ P[[TaSX]Vb ]^RW UTW[TaWPUc public class InterfaceTest03 { public static void main(String[] args) { A a = new B(); System.out.println(a.potenzieren(5)); } } class B implements A { int z = 5; int potenzieren() { return z * z; } } ÎQd]VT] id\ ?a^VaP\\ 8]cTaUPRTCTbc " ÎQd]V ( 2WS C[eO\RZc\U eW`R [Wb T]ZUS\RS` 4SVZS`[SZRc\U OPUSP`]QVS\( 0 Wa \]b OPab`OQb O\R R]Sa \]b ]dS``WRS OPab`OQb [SbV]R ^]bS\hWS`S\W\b W\ / 9ZÉ`S\ AWS RWS C`aOQVS RWSaSa 4SVZS`a 6W\eSWa( 2WS AWU\Obc`S\ W\ 7\bS`TOQS c\R 9ZOaaS [ºaaS\ SfOYb ºPS`SW\abW[[S\ ÎQd]V !(
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Stand: 22.12.2005 13:39:00 ))
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(( merker2.doc
Stand: 22.12.2005 13:39:00 ))
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public class Enum02 { enum Wochentage { sonntag,montag,dienstag,mittwoch, donnerstag,freitag,samstag; } public static void main(String[] args) { for (Wochentage w : Wochentage.values()) System.out.println(w); } } 3\c[0SaQV`SWPc\US\ Yr\\S\ eWS \]`[OZS 9ZOaaS\ USaSVS\ eS`RS\ AWS S`PS\ ;S bV]RS\ d]\ WV`S` 0OaWaYZOaaS 4]d\ c\R aWS Yr\\S\ SWUS\S ;SbV]RS\ S\bVOZbS\ 2Oa T]ZUS\RS 0SWa^WSZ PSabSVb Oca SW\S` C[eO\RZc\UaSW\VSWb RWS a]e]VZ RWS T]d\ 0SaQV`SWPc\U OZa OcQV WV`S 0S\cbhc\U S\bVÉZb 3a RS[]\ab`WS`b T]ZUS\RS DS`O`PSW bc\Ua[rUZWQVYSWbS\( •
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Snum Tageszeit { morgens, mittag, abends; void anzeigen() { System.out.println(this); } } public class Enum03 { public static void main(String[] args) { Tageszeit t1; // Variable definieren
'
(( merker2.doc
Stand: 22.12.2005 13:39:00 ))
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t1 = Tageszeit.mittag; // Wertezuweisung if (t1 == Tageszeit.mittag) // Variable abfragen System.out.println("Guten Tag"); switch(t1) { case morgens: System.out.println("Guten Morgen"); break; case mittag: System.out.println("Guten Tag"); break; case abends: System.out.println("Guten Abend"); break; } for (Tageszeit t2 : Tageszeit.values()) System.out.println(t2); t1.anzeigen(); // Aufruf einer Methode } }
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public class EnumTest02 { // Tageszeit static final int MORGENS = 0; static final int MITTAG = 1; static final int ABENDS = 2; // Farben static final int ROT static final int BLAU
= 0; = 1;
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(( merker2.doc
Stand: 22.12.2005 13:39:00 ))
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(( merker2.doc
Stand: 22.12.2005 13:39:00 ))
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(( merker2.doc
Stand: 22.12.2005 13:39:00 ))
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(( merker2.doc
Stand: 22.12.2005 13:39:00 ))
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(( merker2.doc
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(( merker2.doc
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(( merker2.doc
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(( merker2.doc
Stand: 22.12.2005 13:39:00 ))
! " >QYTZc^aXT]cXTacT BhbcT\T]cfXRZ[d]V
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Stand: 22.12.2005 13:39:00 ))
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(( merker2.doc
Stand: 22.12.2005 13:39:00 ))
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(( merker2.doc
Stand: 22.12.2005 13:39:00 ))
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public class ClassTest { public static void main(String[] args) { ClassA a = new ClassA("Von wem wird dies ausgegeben?"); ClassB b = new ClassB(a); b.ausgeben(); } } class ClassA { String str; ClassA(String s) { str = s; } } class ClassB { private ClassA a; ClassB(ClassA a) { this.a = a; } void ausgeben() { System.out.println(a.str); } } 1TfTacd]V STa d]cTabRWXTS[XRWT] :[PbbT]QTiXTWd]V QTX\ 1X[ST] e^] ]TdT] :[PbbT] 2WS 9ZOaaS\ aW\R ROa eWQVbWUabS ;WbbSZ Tº` 1]RS`ScaS W\ ]PXSYb]`WS\bWS`bS\ AgabS [S\ 8OdO S`ZOcPb Sa RS[ >`]U`O[[WS`S` \WQVb \c` \ScS 9ZOaaS hc S`abSZZS\ a]\ RS`\ PWSbSb OcQV c\bS`aQVWSRZWQVS ;rUZWQVYSWbS\ PSabSVS\RS 9ZOaaS\ hc PS\cbhS\ 2WS SW\TOQVabS 4]`[ RS`
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Stand: 22.12.2005 13:39:00 ))
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Stand: 22.12.2005 13:39:00 ))
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Stand: 22.12.2005 13:39:00 ))
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(( merker2.doc
Stand: 22.12.2005 13:39:00 ))
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(( merker2.doc
Stand: 22.12.2005 13:39:00 ))
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Stand: 22.12.2005 13:39:00 ))
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(( merker2.doc
Stand: 22.12.2005 13:39:00 ))
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(( merker2.doc
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(( merker2.doc
Stand: 22.12.2005 13:39:00 ))
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\S\\b [O\ @SWVc\U S\UZ O``Og /``Oga aW\R W\ 8OdO SQVbS =PXSYbS ]Pe]VZ Sa YSW\S 9ZOaaS UWPb d]\ RS` aWS S`hScUb eS`RS\ 5ZSWQVe]VZ eS`RS\ aWS [Wb RS[ AQVZºaaSZe]`b ]Tf S`abSZZb ÒczS`ZWQVSa ;S`Y[OZ ROTº` ROaa Sa aWQV c[ RS\ 2ObS\bg^ 0aaPh VO\RSZb Wab RWS DS`eS\Rc\U d]\ SQYWUS\ 9ZO[[S`\ I K PSW RS` 2SYZO`ObW]\ RS` @STS`S\hdO`WOPZS( int[] zahlenreihe* ;Wb RWSaS` 2SYZO`ObW]\ eW`R RWS @STS`S\h hc SW\S[ /``Og]PXSYb S`abSZZb ]RS` PSaaS` USaOUb SW\S DO`WOPZS RWS RWS 4ÉVWUYSWb VOb OcT SW\ RS`O`bWUSa =PXSYb hc hSWUS\ RS\\ Sa UWPb XO \]QV YSW\ /``Og]PXSYb 2S` 7RS\bWTWS` VWS`( iPW[T]aTXWT eW`R OcQV /``OgdO`WOPZS US\O\\b 2S` 2ObS\bg^ X]c UWZb Tº` XSRSa SW\hSZ\S ;WbUZWSR RS` 5`c^^S ! !
(( merker2.doc
Stand: 22.12.2005 13:39:00 ))
"
ATXWd]VT] QT]dciT] PaaPhb
9][^]\S\bS 3ZS[S\b 2WS SQYWUS 9ZO[[S` abSVb VW\bS` RS[ 2ObS\bg^ aWS YO\\ OcQV VW\bS` RS[ 7RS\bWTWS` abSVS\ R]QV RWSaS AQV`SWPeSWaS eW`R \WQVb S[^T]VZS\ 2Oa SWUS\bZWQVS /``Og]PXSYb YO\\ eWS PSW =PXSYbS\ ºPZWQV [Wb ]Tf S`hScUb eS` RS\(
zahlenreihe = new int[5]; ;Wb RWSaS` /\eSWac\U eS`RS\ Rg\O[WaQV hc` :OcThSWb W[ /`PSWbaa^SWQVS` # X]c 3ZS[S\bS O\USZSUb OZZS c\bS` RS[ ZObh\c[[S` 7\RSf h 0 zahlenreihe[2] = 15; ;Wb RWSaS` ES`bShceSWac\U eW`R RWS R`WbbS 9][^]\S\bS Oca RS` HOVZS\`SWVS [Wb RS[ ES`b # USTºZZb 0WbbS PSOQVbS\ AWS( RS` 7\RSf [caa UO\hhOVZWU aSW\ c\R RWS OR`SaaWS`b RWS ! HOVZ eSWZ RWS ZÉbhS PSW PSUW\\b ?a^VaP\\ 0aaPh ) 4X] 0aaPh TabcT[[T] d]S \Xc FTacT] U¶[[T] public class Array01 { public static void main(String[] args) int[] umsatz; umsatz = new int[3]; umsatz[0] = 100; umsatz[1] = 200; umsatz[2] = 300; } }
{
2c`QV RWS 2SYZO`ObW]\ int[] umsatz; eW`R SW\S @STS`S\hdO`WOPZS O\USZSUb RWS RWS 4ÉVWUYSWb VOb OcT SW\S @SWVc\U d]\ 7\bSUS`ES`bS\ hc dS`eSWaS\ 2c`QV ROa O\ aQVZWSzS\RS AbObS[S\b umsatz = new umsatz[3]; eS`RS\ ! /`PSWbaa^SWQVS` ^ZÉbhS O\USZSUb XSRS` Wab " 0gbSa ZO\U 8SRS` VOb RWS 4ÉVWUYSWb 7\bSUS`eS`bS OcThc \SV[S\ /R`SaaWS`b eS`RS\ RWS SW\hSZ\S\ >ZÉbhS [Wb SW\S[ 7\RSf d]\ PWa @STS`S\hDO`WOPZS
d\bPci
!
/PP ! ( /``Og W[ /`PSWbaa^SWQVS` 4OhWb( 0SW RS` 2STW\WbW]\ eW`R SXT 0]iPW[ RS` 3ZS[S\bS O\USUSPS\ c\R \WQVb SbeO RWS VrQVabS >ZObhZÉbhS RS` @SWVc\U [Wb ES`bS\ USTºZZb eS`RS\
! "
(( merker2.doc
Stand: 22.12.2005 13:39:00 ))
" ! 8]XcXP[XbXTaT] e^] 0aaPhb
2WS /\UOPS RS` 9][^]\S\bS\O\hOVZ YO\\ TSVZS\ eS\\ ROa /``Og OZa T]`[OZS` >O `O[SbS` SW\S` ;SbV]RS RSTW\WS`b eW`R SW\ bg^WaQVSa 0SWa^WSZ ROTº` S\bVÉZb RWS \PX] ;SbV]RS R]`b Wab SW\ Ab`W\U/``Og OZa 3[^TO\Ua^O`O[SbS` RSTW\WS`b /PS` Sa UWPb W\ 8OdO YSW\S ;rUZWQVYSWb RWS /\hOVZ RS` 3ZS[S\bS hc É\RS`\ eS\\ ROa /``Og SW\[OZ W[ /`PSWbaa^SWQVS` O\USZSUb Wab ;O\ aOUb RWS 6a»vT TX]Tb 0aaPhb Xbc bcPcXbRW ES`RS\ Rg\O[WaQVS /``Oga PS\rbWUb a] [caa RWS AbO\RO`RYZOaaS ETRc^a PS\cbhb eS`RS\ ]RS` SW\S O\RS`S 9ZOaaS RSa 4`O[Se]`Ya 2^[[TRcX^] ÎQd]V 3`abSZZS\ AWS SW\ \ScSa >`]U`O[[ [Wb SW\S` @STS`S\hdO`WOPZS\ 2WSaS DO`WOPZS a]ZZ RWS 4ÉVWUYSWb VOPS\ OcT SW\ /``Og [Wb U[^PcDO`WOPZS\ hc `STS`S\hWS`S\ 2WS @STS `S\hdO`WOPZS a]ZZ RS\ 7RS\bWTWS` iPW[T] VOPS\ 2O\OQV a]ZZ ROa /``Og W[ /`PSWbaa^SW QVS` O\USZSUb eS`RS\ 0S\rbWUb eS`RS\ " 3ZS[S\bS ;»bd]Vbe^abRW[PV public class Array02 { public static void main(String[] args) float[] zahlen; zahlen = new float[4]; } }
{
/TOZOGROYOKXKT\UT'XXG_Y
0SW[ /\ZSUS\ RSa A^SWQVS`^ZObhSa Tº` ROa SWUS\bZWQVS /``Og]PXSYb Wab Sa c\PSRW\Ub S`T]`RS`ZWQV ROaa /\UOPS\ hc RS` 5`rzS RSa /``Oga US[OQVb eS`RS\ 2WS 5`rzS S` UWPb aWQV Oca RS` /\hOVZ RS` 9][^]\S\bS\ RS` @SWVc\U c\R RWS YO\\ OcT heSW /` bS\ TSabUSZSUb eS`RS\ Hc\ÉQVab Wab Sa [rUZWQV ROaa W[ 2SYZO`ObW]\aabObS[S\b SW\S 5O\hhOVZ ]RS` SW\ /caR`cQY RS` SW\S 5O\hhOVZ S`UWPb abSVb(
int[] zahlenreihe = new zahlenreihe[a + 5];
0SW RWSaS` AQV`SWPeSWaS eS`RS\ RWS SW\hSZ\S\ 9][^]\S\bS\ [Wb 2STOcZbeS`bS\ W\WbW OZWaWS`b OPVÉ\UWU d][ 2ObS\bg^ 3W\S O\RS`S ;rUZWQVYSWb PSabSVb RO`W\ RWS 3ZS[S\bS PSW WV`S` 2SYZO`ObW]\ [Wb W\RWdW RcSZZS\ /\TO\UaeS`bS\ hc TºZZS\ hc W\WbWOZWaWS`S\ 7\ RWSaS[ 4OZZ YO\\ RWS /\UOPS RS` /\hOVZ S\bTOZZS\ aWS S`UWPb aWQV Oca RS` /\hOVZ RS` ES`bS RWS OZa Y][[OUS b`S\\bS :WabS W\ USaQVeSWTbS\ 9ZO[[S`\ abSVb(
int[] zahlenreihe = {5, 3, 4, 17, 21};
0SW RWSaS` 9c`haQV`SWPeSWaS S\bTÉZZb OcQV ROa AQVZºaaSZe]`b ]Tf RS` 1][^WZS` S` [WbbSZb RWS /\hOVZ RS` 3ZS[S\bS Oca RS` :WabS aSZPab ! #
(( merker2.doc
Stand: 22.12.2005 13:39:00 ))
"
ATXWd]VT] QT]dciT] PaaPhb
?a^VaP\\ 0aaPh ") 3TZ[PaPcX^] d]S X]SXeXSdT[[T 8]XcXP[XbXTad]V TX]Tb 0aaPhb public class Array03 { public static void main(String[] args) int[] umsatz = {100,200,300,0,0}; umsatz[4] = 1100; System.out.println(umsatz[1]); } }
{
7\ RS` HSWZS ! eW`R RWS @STS`S\hdO`WOPZS d\bPci RSYZO`WS`b 5ZSWQVhSWbWU eW`R ROa /` `Og]PXSYb S`hScUb c\R RS\ Tº\T 9][^]\S\bS\ RWS ES`bS Oca RS` :WabS RS` Tº\T X]c :WbS`OZS hcUSeWSaS\ 2ORc`QV eS`RS\ RWS 9][^]\S\bS\ RSa /``Oga W\WbWOZWaWS`b 2WS RO`OcT T]ZUS\RS SW\hSZ\S ES`bShceSWac\U OR`SaaWS`b ROa ZSbhbS 3ZS[S\b W\ RS` @SW Vc\U C\R [Wb RS` ZSbhbS\ /\eSWac\U eW`R RS` ES`b RSa heSWbS\ 3ZS[S\ba OcaUSUS PS\ ÎQd]V 3`abSZZS\ AWS SW\ \ScSa >`]U`O[[ 0aaPh # 2SYZO`WS`S\ AWS RO`W\ SW\ /``Og ROa Oca # RWPa3ZS[S\bS\ PSabSVb 2WS 3ZS[S\bS a]ZZS\ W\WbWOZWaWS`b eS`RS\ [Wb RS\ 9ZSW\ PcQVabOPS\ d]\ O PWa S 0S\cbhS\ AWS Tº` RWS 7\WbWOZWaWS`c\U RWS 9c`haQV`SWPeSWaS RO[Wb RWS Sf^ZWhWbS /\UOPS RS` /``OgU`rzS 2W[S\aW]\ S\bTOZZS\ YO\\ ;»bd]Vbe^abRW[PV
public class Array04 { public static void main(String[] args) { char[] buchstaben = {'a','b','c','d','e'}; System.out.println(buchstaben[3]); } } ES\\ RS` >`]U`O[[WS`S` YSW\S /\TO\UaeS`bS d]`UWPb eS`RS\ RWS 9][^]\S\bS\ SW \Sa /``Oga [Wb AbO\RO`ReS`bS\ W\WbWOZWaWS`b 0SWa^WSZaeSWaS PSY][[S\ \c[S`WaQVS Bg^S\ RS\ ES`b 2Oa T]ZUS\RS >`]U`O[[ RSTW\WS`b SW\ /``Og Tº` RWS /cT\OV[S d]\ ATUTaT]iT] PdU >QYTZcT aWSVS OcQV /PaQV\Wbb ! " /PS` eSWZ \]QV YSW\S =PXSYbS S`hScUb e]`RS\ aW\R S\bVOZbS\ RWS 9][^]\S\bS\ RS\ /\TO\UaeS`b ]d[[ ?a^VaP\\ 0aaPh $) 3XT :^\_^]T]cT] fTaST] \Xc 3TUPd[cfTacT] e^aQT[TVc public class Array05 { public static void main (String args[]) { Object[] obj = new Object[3]; System.out.println(obj[0]); } } ! $
(( merker2.doc
Stand: 22.12.2005 13:39:00 ))
" " IdVaXUU PdU SXT 0aaPh:^\_^]T]cT]
ÎQd]V id\ ?a^VaP\\ 0aaPh $ ÍPS`^`ºTS\ AWS Rc`QV >`]U`O[[É\RS`c\U eWS RS` 2STOcZbeS`b ZOcbSb eS\\ ROa /` `Og Oca Q^^[TP]Bg^S\ PSabSVb UP[bT ]RS` cadT. 2Oa T]ZUS\RS >`]U`O[[ YO\\ \WQVb TSVZS`T`SW c[USeO\RSZb eS`RS\ ?a^VaP\\ 0aaPh %) D\fP]S[d]VbUTW[Ta ]^c WPeT QTT] X]XcXP[XiTS public class Array06 { public static void main (String args[]) { float[] zahlen; zahlen[0] = 15.4f; } } ÎQd]V id\ ?a^VaP\\ 0aaPh % 9ZÉ`S\ AWS RWS C`aOQVS RSa Ag\bOfTSVZS`a c\R Y]``WUWS`S\ AWS RS\ 4SVZS` :rac\UaVW\eSWa( /``Og]PXSYbS [ºaaS\ W[ /`PSWbaa^SWQVS` [Wb ]Tf S`hScUb eS`RS\ 4OhWb Oca RS\ ZSbhbS\ PSWRS\ ÍPc\US\( 0SW[ 7\WbWOZWaWS`S\ d]\ /``Og]PXSYbS\ [caa aOcPS` c\bS`aQVWSRS\ eS`RS\ heWaQVS\ RS` 7\WbWOZWaWS`c\U RS` @STS`S\hdO`WOPZS\ RWSa USaQVWSVb Rc`QV /cT`cT d]\ ]Tf c\R RS` 0SZSUc\U RS` SW\hSZ\S\ 9][^]\S\ bS\ [Wb /\TO\UaeS`bS\ RWSa USaQVWSVb ROPSW Ocb][ObWaQV
@[MXOLLG[LJOK'XXG_1USVUTKTZKT
2WS SW\hSZ\S\ DO`WOPZS\ Oca RS\S\ aWQV ROa /``Og hcaO[[S\aSbhb eS`RS\ 9][^] \S\bS\ [O\QV[OZ OcQV 3ZS[S\bS US\O\\b AWS eS`RS\ c\bS`aQVWSRS\ ºPS` WV`S >ZObh`]U`O[[a eW`R aWQVS`USabSZZb ROaa \c` UºZbWUS 7\RWQSa dS`O`PSWbSb eS`RS\ O\RS`\TOZZa UWPb Sa 4SVZS`[SZRc\US\ 3fQS^bW]\a Rc`QV RWS 8OdO DW`bcSZZS ;OaQVW\S 8D; 2WS 7\RWQSa PSUW\\S\ PSW hc hÉVZS\
2c`QV RS\ 3W\aObh SW\Sa /``Oga eW`R RWS 2SYZO`ObW]\ DS`eOZbc\U c\R DS`O`PSWbc\U RS` SW\hSZ\S\ 9][^]\S\bS\ S`VSPZWQV dS`SW\TOQVb AWS P`OcQVS\ \c` SW\[OZ RSYZO `WS`b hc eS`RS\ AWS Yr\\S\ SW\hSZ\ ]RS` OZa 5O\hSa dS`O`PSWbSb eS`RS\ ;O\ YO\\ RW`SYb OcT SW\hSZ\S 9][^]\S\bS\ hcU`SWTS\ ]RS` [O\ YO\\ AQVZSWTS\ T]`[cZWS`S\ c[ aS_cS\bWSZZ Rc`QV OZZS 3ZS[S\bS hc WbS`WS`S\ 0Sa]\RS`a SZSUO\b Wab ROa /`PSWbS\ [Wb RS` U^aAQVZSWTS ! %
(( merker2.doc
Stand: 22.12.2005 13:39:00 ))
"
ATXWd]VT] QT]dciT] PaaPhb
?a^VaP\\ 0aaPh &) 8cTaXTaT] SdaRW TX] 0aaPh
d]S IdVaXUU PdU YTSTb 4[T\T]c public class Array07 { public static void main(String[] args) float[] zahlen; zahlen = new float[4]; for (int i=0; i<4; i++) zahlen[i] = i + 125.0f; } }
{
3W\S eSWbS`S DS`O`PSWbc\UadO`WO\bS PSabSVb RO`W\ RWS 5`c^^S RS` 3ZS[S\bS OZa 5O\ hSa hc dS`O`PSWbS\ 2Ohc PWSbSb RWS 9ZOaaS YPeP dcX[ 0aaPhb aWSVS /PaQV\Wbb ! #( 1ZOaa 0aaPhb SW\S 4ºZZS d]\ ;SbV]RS\ h 0 RWS ;SbV]RS UX[[ ?a^VaP\\ 0aaPh ') 3Pb 0aaPh P[b 6P]iTb eTaPaQTXcT]
public class Array08 { public static void main(String[] args) { float[] zahlen; zahlen = new float[4]; java.util.Arrays.fill(zahlen, 12.45f); for (float zahl : zahlen) System.out.println(zahl); } } ÎQd]V id\ ?a^VaP\\ 0aaPh ' 9ZÉ`S\ AWS O\VO\R RS` />72]Yc[S\bObW]\ [Wb eSZQVS` ;SbV]RS RS` 9ZOaaS 0aaPhb SW\ U[^Pc/``Og W\ SW\S Ab`W\U`S^`ÉaS\bObW]\ c[USeO\RSZb eS`RS\ YO\\ 3`UÉ\hS\ AWS ROa >`]U`O[[ c[ SW\S\ S\ba^`SQVS\RS\ /caUOPSPSTSVZ ;»bd]VbWX]fTXb)
System.out.println(java.util.Arrays.toString(zahlen));
6XL[TMJKY/TJK^J[XIN8[T:OSK;SMKH[TM
8SRS` /``OgHcU`WTT eW`R d]\ RS` :OcThSWbc[USPc\U ºPS`^`ºTb 2S` DS`acQV SW\S\ 7\RSf hc dS`eS\RS\ RS` YZSW\S` OZa
! &
(( merker2.doc
Stand: 22.12.2005 13:39:00 ))
" " IdVaXUU PdU SXT 0aaPh:^\_^]T]cT]
?a^VaP\\ 0aaPh () 5P[bRWT 0SaTbbXTad]V TX]Ta 0aaPh:^\_^]T]cT public class Array09 { public static void main(String[] args) { char[] buchstaben = {'a','b','c','d','e'}; for(int i=0; i<6; i++) { System.out.println(buchstaben[i]); } } } ÎQd]V id\ ?a^VaP\\ 0aaPh ( 0SW RS` /caTºV`c\U UWPb Sa RWS 4SVZS`[SZRc\U /``Og7\RSf=cb=T0]c\Ra3fQS^bW]\( # AW\\US[Éz PSRScbSb ROa ROaa RS` 7\RSf # SW\S\ A^SWQVS` OczS`VOZP RWSaS` /` `OgU`S\hS\ OR`SaaWS`b 9]``WUWS`S\ AWS ROa >`]U`O[[ a] ROaa Sa TSVZS`T`SW OcaUSTºV`b eS`RS\ YO\\
3KSHKX
Hc XSRS[ /``Og UWPb Sa SW\S hcaÉbhZWQVS SW\USPOcbS DO`WOPZS RWS OZa ES`b RWS /\hOVZ RS` /``Og3ZS[S\bS S\bVÉZb RWS DO`WOPZS [T]VcW AWS YO\\ h 0 W[ 9]^T SW\S` U^a AQVZSWTS PS\cbhb eS`RS\ c[ RWS 2c`QVZOcTPSRW\Uc\U hc T]`[cZWS`S\ ?a^VaP\\ 0aaPh ) 0aQTXcT] \Xc STa EPaXPQ[T] [T]VcW
public class Array10 { public static void main(String[] args) { char[] buchstaben = {'a','b','c'}; for(int i=0; i`]U`O[[WS`S` \WQVb OPhÉVZS\ [caa eWSdWSZ 3ZS[S\bS ROa /``Og S\bVÉZb Hc[ O\RS`S\ Wab aWS OcaaOUSTÉVW US`( [O\ S`YS\\b a]T]`b ROaa OZZS 3ZS[S\bS dS`O`PSWbSb eS`RS\ ÎQd]VT] id\ ?a^VaP\\ 0aaPh ÎQd]V ) 3`UÉ\hS\ AWS ROa >`]U`O[[ a] ROaa RS` ES`b RS` DO`WOPZS\ [T]VcW OcT RS` 9]\a]ZS OcaUSUSPS\ eW`R ÎQd]V !( 0WbbS É\RS`\ AWS ROa >`]U`O[[ a] ROaa [Wb SW\S` 4]`3OQVAQVZSWTS ROa /``Og Rc`QVacQVb eW`R \OQV RS[ 0cQVabOPS\ P ES\\ RWSaS` ES`b USTc\RS\ eW`R a]ZZ S` OcaUSUSPS\ c\R RWS AcQVS OPUSP`]QVS\ eS`RS\ ! '
(( merker2.doc
Stand: 22.12.2005 13:39:00 ))
"
ATXWd]VT] QT]dciT] PaaPhb
;»bd]Vbe^abRW[PV
public class Array11 { public static void main(String[] args) { char[] buchstaben = {'a','b','c'}; for (char buchstabe: buchstaben) { if (buchstabe == 'b') { System.out.println(buchstabe); break; } } } } 2WS DO`WOPZS [T]VcW S\bVÉZb \WQVb RWS /\hOVZ RS` VTU¶[[cT] 9][^]\S\bS\ a]\RS`\ RWS 5SaO[bO\hOVZ OZZS` 3ZS[S\bS c\OPVÉ\UWU ROd]\ ]P aWS [Wb W\RWdWRcSZZS\ ES` bS\ USTºZZb e]`RS\ aW\R ]RS` ]P aWS RWS 2STOcZb7\WbeS`bS S\bVOZbS\ ES\\ OZa] \c` RWS USTºZZbS\ 3ZS[S\bS dS`O`PSWbSb eS`RS\ a]ZZS\ a] [caa RWS S\b a^`SQVS\RS /PT`OUS d][ >`]U`O[[WS`S` Q]RWS`b eS`RS\ ÎQd]V
3`abSZZS\ AWS SW\ \ScSa >`]U`O[[ 0aaPh ! 2O`W\ a]ZZ SW\ /``Og RSTW\WS`b eS`RS\ ROa RWS HOVZS\ W\ aSW\S\ 9][^]\S\bS\ a^SWQVS`b 2WS ES`bS RS` 9][^]\S\bS\ a]ZZS\ W\ SW\S` U^aAQVZSWTS Rc`QV ES`bShceSWac\U dS`USPS\ eS`RS\ 2O\OQV a]ZZ W\ SW\S` heSWbS\ U^aAQVZSWTS ROa /``Og WbS`WS`b c\R RWS 7\VOZbS OcTORRWS`b eS`RS\ 2Oa 3`USP\Wa eW`R OcT RS` 9]\a]ZS OcaUSUSPS\ ;»bd]Vbe^abRW[PV)
public class Array12 { public static void main(String[] args) { int[] zahlen = new int[10]; for (int i=0; i<10; i++) { zahlen[i] = i+1; } int summe = 0; for (int wert: zahlen) { summe = summe + wert; } System.out.println("Die Summe ist: " + summe); } }
!
(( merker2.doc
Stand: 22.12.2005 13:39:00 ))
" # >QYTZcT X] 0aaPhb bP\\T[]
5HPKQZKOT'XXG_YYGSSKRT
/``Oga Yr\\S\ \WQVb \c` ES`bS d]\ ^`W[WbWdS\ 2ObS\bg^S\ S\bVOZbS\ a]\RS`\ aWS Yr\\S\ OcQV =PXSYbS OcT\SV[S\ 2O\\ eS`RS\ OPS` \WQVb RWS =PXSYbS aSZPab W[ /` `Og USa^SWQVS`b a]\RS`\ ZSRWUZWQV RWS @STS`S\hdO`WOPZS\ 2WS =PXSYbS [ºaaS\ d][ UZSWQVS\ Bg^ aSW\ DS`eO\RbS aW\R S`ZOcPb R V Sa Yr\\S\ OcQV AcPBg^S\ RS` RS TW\WS`bS\ 9ZOaaS USa^SWQVS`b eS`RS\ ?a^VaP\\ 0aaPh #)
BP\\T[] e^] 8]bcP]iT] X] TX]T\ 0aaPh import java.util.*; public class Array14 { public static void main(String[] args) Calendar[] tage = new Calendar[3]; for (int i=0; i<3; i++) tage[i] = Calendar.getInstance(); System.out.println(tage[1]); } }
{
2Oa >`]U`O[[ 0aaPh # S`hScUb SW\S @STS`S\hdO`WOPZS cPVT 2WSaS VOb RWS 4ÉVWUYSWb OcT SW\ /``Og hc hSWUS\ ROa =PXSYbS d][ Bg^ 2P[T]SPa aO[[SZb ;Wb ]Tf eW`R RWS aSa /``Og S`hScUb 3a S\bVÉZb R`SW 9][^]\S\bS\ XSRS `STS`S\hWS`b OcT SW\ 1OZS\RO` =PXSYb bOUS
@STS`S\h
@STS`S\h
@STS`S\h!
/PP ! ( /``Og [Wb @STS`S\hS\ OcT ! =PXSYbS 0SW[ AO[[SZ\ c\R DS`eOZbS\ d]\ =PXSYbS\ W[ 6Oc^ba^SWQVS` Wab Sa bg^WaQV ROaa RWS /\hOVZ RS` =PXSYbS RWS USa^SWQVS`b eS`RS\ a]ZZS\ VÉcTWU abO`Y dO`WWS`b 4º` RWS aS 4ÉZZS Wab SW\ /``Og \WQVb Ucb USSWU\Sb eSWZ RSaaS\ 5`rzS abObWaQV Wab 0SaaS`S :r ac\US\ PWSbSb ROa 2^[[TRcX^]4`O[Se]`Y d]\ 8OdO 2]`b UWPb Sa SW\S UO\hS /\hOVZ c\bS`aQVWSRZWQVS` 9ZOaaS\ RWS OZa =PXSYbAO[[Zc\US\ PS\cbhb eS`RS\ Yr\\S\ h 0 RWS ETRc^a9ZOaaS 2S` >`]U`O[[WS`S` YO\\ RO[Wb \OQV RS` 3`hScUc\U RSa DSQb]`a PSZWSPWU dWSZS =PXSYbS SW\Sa Bg^a aO[[SZ\ c\R dS`O`PSWbS\ 8OdO a]`Ub Tº` RWS Rg \O[WaQVS /\^Oaac\U RS` :É\US ÎQd]V id\ ?a^VaP\\ 0aaPh # >`ºTS\ AWS ]P O\abSZZS RSa @STS`S\hbg^a 2P[T]SPa W\ HSWZS " OcQV >QYTRc S`ZOcPb Wab ES\\ XO S`YZÉ`S\ AWS eO`c[ RWS :rac\U abSVb W[ S`abS\ /PaObh RWSaSa /PaQV\Wbba !
(( merker2.doc
Stand: 22.12.2005 13:39:00 ))
"
ATXWd]VT] QT]dciT] PaaPhb
3KZNUJKTJKX)RGYY'XXG_Y
4º` ROa Y][T]`bOPZS /`PSWbS\ [Wb Y][^ZSbbS\ /``Oga UWPb Sa RWS AbO\RO`RYZOaaS 0a aPhb /QVbc\U( ROa O\VÉ\US\RS a Wab eWQVbWU AWS S\bVÉZb SW\WUS bcPcXR;SbV]RS\ RWS d][ >`]U`O[[WS`S` US\cbhb eS`RS\ Yr\\S\ c[ /``Oga h 0 hc a]`bWS`S\ b^ac hc dS`UZSWQVS\ T`dP[b ]RS` PW\É` hc Rc`QVacQVS\ QX]PahBTPaRW ?a^VaP\\ 0aaPh $) B^acXTaT] \Xc STa 2[Pbb 0aaPhb public class Array15 { public static void main(String[] args) { int umsatz[] = {100,200,300,50,100,5,0,98,700,50,0,90}; java.util.Arrays.sort(umsatz); for (int wert: umsatz) { System.out.println(wert); } } } 7[ >`]U`O[[ 0aaPh $ eW`R RWS 9ZOaaS 0aaPhb d]ZZ_cOZWTWhWS`b O\USa^`]QVS\ 2O Rc`QV YO\\ OcT SW\S X\_^ac/\eSWac\U dS`hWQVbSb eS`RS\ ÎQd]V 3`abSZZS\ AWS SW\ \ScSa >`]U`O[[ 0aaPh % [Wb SW\S[ /``Og ROa Oca " 7\bSUS` 3ZS[S\bS\ PSabSVb 7\WbWOZWaWS`S\ AWS ROa /``Og [Wb RS\ ES`bS\ & ! # 5SPS\ AWS RWS c\a]`bWS`bS\ ES`bS O[ 0WZRaQVW`[ Oca a]`bWS`S\ AWS RO\OQV RWS ES`bS c\R USPS\ AWS S`\Scb RS\ /``Og7\VOZb Oca /`PSWbS\ AWS [Wb RS` X\_^ac/\eSWac\U ;»bd]Vbe^abRW[PV) import java.util.*; public class Array16 { public static void main(String[] args) int[] zahlen = {11, 23, 4, 15}; for (int zahl: zahlen) System.out.format("%d ", zahl); Arrays.sort(zahlen); System.out.println('\n'); for (int zahl: zahlen) { System.out.format("%d ", zahl); } } } !
{
(( merker2.doc
Stand: 22.12.2005 13:39:00 ))
" %
3KNXJOSKTYOUTGRK'XXG_Y
3W\ /``Og YO\\ =PXSYbS d]\ XSRS[ O\RS`S\ 2ObS\bg^ S\bVOZbS\ OZa] OcQV d][ Bg^ /``Og 2Oa VSWzb W\ 8OdO eS`RS\ [SV`RW[S\aW]\OZS /``Oga OZa /``Oga RSTW\WS`b RS`S\ 3ZS[S\bS eWSRS`c[ /``Oga aW\R dS`aQVOQVbSZbS /``Oga O``Og ]T O``Og 2WS 2STW\W bW]\ int matrix[4][3]; dS`SW\PO`b SW\S ;Ob`Wf d][ Bg^ X]c 3a eS`RS\ " X]c3ZS[S\bS O\USZSUb RWS XSeSWZa eWSRS` Oca ! X]c3ZS[S\bS\ PSabSVS\ 2S` HcU`WTT OcT RWS SW\hSZ\S\ 3ZS[S\bS S`T]ZUb c\bS` /\UOPS RS` PSWRS\ 7\RWhSa RWS XSeSWZa W\ SQYWUS\ 9ZO[[S`\ SW\USaQVZ]aaS\ aW\R( matrix[2][1] = 8; 2O[Wb eW`R ROa ! 3ZS[S\b OR`SaaWS`b c\R W\\S`VOZP RWSaSa ! 3ZS[S\ba ROa 3ZS [S\b 0SW RS` 2SYZO`ObW]\ eW`R ^`] AQVOQVbSZc\UabWSTS SW\ SQYWUSa 9ZO[[S`\^OO` PS\rbWUb C\R PSW[ HcU`WTT eS`RS\ a]dWSZ 9ZO[[S`\^OO`S O\USUSPS\ eWS RWS 2W[S\aW]\ RSa /``Oga O\UWPb 4º` RWS DS`O`PSWbc\U PWSbS\ aWQV USaQVOQVbSZbS U^aAQVZSWTS\ O\
/TOZOGROYOKX[TM\UTSKNXJOSKTYOUTGRKT,KRJKXT
;SV`RW[S\aW]\OZS 4SZRS` Yr\\S\ PSW RS` 2SYZO`ObW]\ SPS\TOZZa [Wb /\TO\UaeS`bS\ dS`aSVS\ eS`RS\ 2WS T]ZUS\RS 2STW\WbW]\ W\WbWOZWaWS`b SW\S X]c;Ob`Wf UZSWQVhSWbWU [Wb RS` 2SYZO`ObW]\( int matrix[][] = { {1, 2, 3}, {4, 5, 6} }; 5SRO\YZWQV YO\\ RWSaS 2STW\WbW]\ a] ºPS`aSbhb eS`RS\( 3`abSZZS SW\ /``Og Oca heSW HSWZS\ [Wb XSeSWZa R`SW A^OZbS\ 2Oa UZSWQVS 3`USP\Wa eW`R Rc`QV T]ZUS\RSa >`] U`O[[ S``SWQVb( ?a^VaP\\ 0aaPh! )
IfTXSX\T]bX^]P[Tb 0aaPh \Xc _aX\XcXeT] Ch_T] public class Array20 { public static void main(String[] args) int[][] matrix; matrix = new int [2][3]; matrix[0][0] = 1; matrix[0][1] = 2; matrix[0][2] = 3; matrix[1][0] = 4; matrix[1][1] = 5; matrix[1][2] = 6; } }
{
! !
(( merker2.doc
Stand: 22.12.2005 13:39:00 ))
"
ATXWd]VT] QT]dciT] PaaPhb
@[MXOLLG[LJOK'XXG_+RKSKTZK
2Oa T]ZUS\RS >`]U`O[[ S`hScUb SW\ RW[S\aW]\OZSa /``Og Tº` RWS A^SWQVS`c\U d]\ Ab`W\Ua 3a a]ZZS\ " AÉbhS dS`O`PSWbSb eS`RS\ RWS XSeSWZa Oca [SV`S`S\ Er`bS`\ PS abSVS\ 2WS [OfW[OZS /\hOVZ d]\ Er`bS`\ ^`] AObh Wab ! ?a^VaP\\ 0aaPh! ) IfTXSX\T]bX^]P[Tb 0aaPh \Xc >QYTZcT] public class Array21 { public static void main(String[] args) { String[][] woertermatrix = { {"Wort1", "Wort2", "Wort3"}, {"Wort4", "Wort5", "Wort6"}, {"Wort7", "Wort8", "Wort9"}, {"Wort10","Wort11","Wort12"} }; for(int i=0; i<4; i++) { for (int j=0; j<3; j++) System.out.println(woertermatrix[i][j]); } } } ÎQd]V 0WbbS S`abSZZS\ AWS SW\ >`]U`O[[ 0aaPh!! [Wb SW\S[ RW[S\aW]\OZS\ /``Og ROa Oca R`SW 3ZS[S\bS\ PSabSVb 8SRSa RS` R`SW 3ZS[S\bS a]ZZ eWSRS` Oca SW\S[ /``Og PSabS VS\ \É[ZWQV XSeSWZa Oca SW\S` @SWVc\U d]\ dWS` RWPaES`bS\ 7[ >`]U`O[[ a]ZZ Rc`QV ES`bShceSWac\U W\ SW\S` VTbRWPRWcT[cT] U^aBRW[TXUT RWS S`abS\ dWS` RWPa DO`WOPZS\ [Wb RS\ 9ZSW\PcQVabOPS\ O R RWS \ÉQVabS\ [Wb RS\ 0cQVabOPS\ S V c\R RWS ZSbhbS\ dWS` DO`WOPZS\ [Wb RS\ HSWQVS\ W Z USTºZZb eS`RS\ 2WS /caUOPS a]ZZ eWS T]ZUb OcaaSVS\( a b c d e f g h i j k l ;»bd]Vbe^abRW[PV
public class Array22 { public static void main(String[] args) char[][] zeichen; zeichen = new char[3][4]; char unicode = 97; // Fuellen mit Zeichen for(int i=0; i<3; i++) { for (int j=0; j<4; j++)
{
! "
(( merker2.doc
Stand: 22.12.2005 13:39:00 ))
" & 0aaPhb P[b ?PaP\TcTa d]S ATcda]fTac QTX
zeichen[i][j] = unicode++; } // Ausgeben der Zeichen for(int i=0; i<3; i++) { for (int j=0; j<4; j++) { System.out.print(zeichen[i][j]); } System.out.println(); } } }
'XXG_YGRY6GXGSKZKX[TJ8KZ[XT]KXZHKO3KZNUJKT
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(( merker2.doc
Stand: 22.12.2005 13:39:00 ))
"
ATXWd]VT] QT]dciT] PaaPhb
?a^VaP\\ 0aaPh!#) 0aaPh P[b ATcda]fTac TX]Ta
public class Array24 { public static void main(String[] args) { int zahl = 125; int[] erg = dividieren(zahl); System.out.println("125 / 3 = " + erg[0]); System.out.println("Ganzzahliger Rest: " + erg[1]); } static int[] dividieren(int z) { int[] erg = {0,1}; erg[0] = z / 3; erg[1] = z % 3; return erg; } }
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(( merker2.doc
Stand: 22.12.2005 13:39:00 ))
" ' IdbP\\T]UPbbd]V
•
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2WS T]ZUS\RS\ 0SWa^WSZS ZraS\ OZZS RWSaSZPS /cTUOPS( Sa a]ZZ SW\ /`aPg i Y]^WS`b eS`RS\ 2OPSW eS`RS\ \]QV SW\[OZ SbZWQVS RS` PSa^`]QVS\S\ DS`O`PSWbc\Ua[rU ZWQVYSWbS\ RS[]\ab`WS`b c\R OcQV UShSWUb e]`OcT PSa]\RS`a hc OQVbS\ Wab ?a^VaP\\ 0aaPh" ) 4b fXaS ]da STa ETafTXb Z^_XTac public class Array30 { public static void main(String[] args) { int[] z1 = {11, 23, 4, 15}; int[] z2; z2 = z1; // Referenz-Semantik ! for (int z : z2) System.out.println(z); } } ÎQd]V id\ ?a^VaP\\ 0aaPh" 0WbbS YZÉ`S\ AWS Rc`QV >`]U`O[[É\RS`c\U ]P T]ZUS\RS hcaÉbhZWQVS /\eSWac\U PS eW`Yb ROaa aWQV OcQV ROa /``Og i! É\RS`b( z1[2] = 100; ?a^VaP\\ 0aaPh" ) ?Ta BRW[TXUT TX]iT[]T FTacT Z^_XTaT] public class Array31 { public static void main(String[] args) int[] z1 = {11, 23, 4, 15}; int[] z2 = new int[z1.length]; for (int i=0; i
{
! %
(( merker2.doc
Stand: 22.12.2005 13:39:00 ))
"
ATXWd]VT] QT]dciT] PaaPhb
for (int z : z2) System.out.println(z);
} } ÎQd]V id\ ?a^VaP\\ 0aaPh" 0WbbS YZÉ`S\ AWS Rc`QV >`]U`O[[É\RS`c\U ]P T]ZUS\RS hcaÉbhZWQVS /\eSWac\U SW\ USTºUb VW\bS` HSWZS $ PSeW`Yb ROaa aWQV OcQV ROa /``Og i! É\RS`b( z1[2] = 100; 2WS BhbcT\9ZOaaS S\bVÉZb RWdS`aS \ºbhZWQVS bcPcXR4SZRS` c\R [SV` OZa bcPcXR ;SbV]RS\ c O OcQV RWS ;SbV]RS PaaPhR^_h RWS PS\cbhb eS`RS\ YO\\ c[ /``Oga Y][^ZSbb ]RS` bSWZeSWaS hc Y]^WS`S\ ?a^VaP\\ 0aaPh"!) <Xc TX]Ta BhbcT\
public class Array32 { public static void main(String[] args) { int[] z1 = {11, 23, 4, 15}; int[] z2 = new int[z1.length]; System.arraycopy(z1, 0, z2, 0, z1.length); for (int z : z2) System.out.println(z); } } 2WS 9ZOaaS >QYTRc Wab RWS ;cbbS` OZZS` 9ZOaaS\ XSRS O\RS`S 9ZOaaS Wab RW`SYb ]RS` W\ RW`SYb ROd]\ OPUSZSWbSb 2Oa PSRScbSb ROaa RWS ;SbV]RS\ RWSaS` 9ZOaaS OZZS\ O\RS `S\ 8OdO9ZOaaS\ hc` DS`TºUc\U abSVS\ 2Ohc USVr`S\ c O RWS ;SbV]RS\ c^BcaX]V T`dP[b c\R OcQV RWS ;SbV]RS R[^]T ?a^VaP\\ 0aaPh"") 1T]dciT] STa VTTaQcT]
public class Array33 { public static void main(String[] args) int[] z1 = {11, 23, 4, 15}; int[] z2 = z1.clone(); for (int z : z2) System.out.println(z); } }
{
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z1[2] = 100;
! &
(( merker2.doc
Stand: 22.12.2005 13:39:00 ))
# 4abcT[[T] e^] BcaX]V>QYTZcT]
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str = new String("Dies ist eine Zeichenkette");
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(( merker2.doc
Stand: 22.12.2005 13:39:00 ))
# ITXRWT]ZTccT] P]fT]ST] bcaX]Vb
String str = new String("Dies ist eine Zeichenkette");
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String str = "Dies ist eine Zeichenkette";
?a^VaP\\ BcaX]V ) ATUTaT]iePaXPQ[T TaiTdVT] UTW[TaWPUc public class String01 { public static void main(String[] args) String vorname; System.out.println(vorname); } }
{
ÎQd]V id\ ?a^VaP\\ BcaX]V 2Oa >`]U`O[[ S`hScUb SW\S\ C[eO\RZc\UaTSVZS` ÍPS`ZSUS\ AWS eOa RS` 5`c\R ROTº` Wab c\R Y]``WUWS`S\ AWS ROa >`]U`O[[ a] ROaa Sa c[USeO\RSZb c\R OcaUSTºV`b eS`RS\ YO\\ ;»bd]VbWX]fTXb
2WS 4SVZS`c`aOQVS Wab ROaa RWS @STS`S\hdO`WOPZS e^a]P\T W[ /caUOPSPSTSVZ PS\cbhb eW`R aWS OPS` \]QV YSW\S\ ES`b S\bVÉZb 4º` RWS :rac\U RS` ÍPc\U UWPb Sa heSW ;rUZWQVYSWbS\( S\beSRS` S`hScUS\ AWS SW\ =PXSYb RS` 9ZOaaS BcaX]V ]RS` AWS aOUS\ RS[ 1][^WZS` ROaa \]QV YSW\ =PXSYb PS\rbWUb eW`R c\R RSaeSUS\ RWS @STS`S\h ZSS` PZSWPS\ a]ZZ 4º` RWS Sf^ZWhWbS HceSWac\U SW\S` ZSS`S\ @STS`S\h UWPb Sa ROa AQVZºaaSZe]`b ]d[[ AW\\US[Éz Wab ROa RWS S\UZWaQVS 0ShSWQV\c\U Tº` HSWUS` W\a <WQVba \WQVb hc dS` eSQVaSZ\ [Wb RS` RScbaQVS\ 0ShSWQV\c\U
public class String02 { public static void main(String[] args) String vorname = null; System.out.println(vorname); } }
{
ÎQd]VT] id\ ?a^VaP\\ BcaX]V ! Ò\RS`\ AWS RWS ES`bhceSWac\U W\ RS` ! HSWZS eWS T]ZUb( String vorname = "0"; =RS` eS\\ AWS e]ZZS\ OcQV a]( String vorname = "Null"; !!
(( merker2.doc
Stand: 22.12.2005 13:39:00 ))
# 4abcT[[T] e^] BcaX]V>QYTZcT]
EO\RSZ\ AWS RO\OQV ROa >`]U`O[[ c[ c\R bSabS\ AWS Sa ÍPS`ZSUS\ AWS eSZQVS /` PSWbaa^SWQVS`^ZÉbhS W[ =`WUW\OZ^`]U`O[[ Phe \OQV RWSaS` Ò\RS`c\U PSZSUb aW\R 2Oa T]ZUS\RS >`]U`O[[ [OQVb RS\ C\bS`aQVWSR heWaQVS\ ]d[[ c\R SW\S[ ZSS`S\ =PXSYb \]QV SW\[OZ RScbZWQV ?a^VaP\\ BcaX]V ") ]d[[ Xbc ]XRWc Q[P]Z
public class String03 { public static void main(String[] args) String vorname = " "; System.out.println(vorname); } }
{
7[ /`PSWbaa^SWQVS` eS`RS\ Rc`QV ROa >`]U`O[[ T]ZUS\RS >ZÉbhS PS\rbWUb c\R O\US ZSUb( =PXSYbeS`b( Q[P]Z
d]`\O[S `STS`S\hWS`b
/PP " ( =PXSYb W[ A^SWQVS`( @STS`S\hdO`WOPZS c\R =PXSYbeS`b 2WS @STS`S\hdO`WOPZS e^a]P\T S\bVÉZb SW\S\ DS`eSWa OcT ROa SWUS\bZWQVS Ab`W\U]PXSYb 2WSaSa Ab`W\U]PXSYb S\bVÉZb RS\ ES`b PZO\Y Phe a^OQS 2Oa Wab ZOcb C\WQ]RSbO PSZZS RS` VSfORShW[OZS ES`b PW\É`( ES\\ ROUSUS\ RWS @STS`S\hdO`WOPZS RS\ ES`b ]d[[ S\bVÉZb a] UWPb Sa YSW\ Ab`W\U]PXSYb OcT ROa aWS dS` eSWab
9ZXOTMROZKXGRKHKT[Z`KT
3W\ Ab`W\UZWbS`OZ Wab SW\ BSfb RS` SW\USaQVZ]aaS\ Wab W\ S^__T[cT] 6]QVY][[Oa \WQVb W\ SW\TOQVS\ 6]QVY][[Oa eWS RWPaES`bS A] eWS RWPa:WbS`OZS YO\\ OcQV SW\ Ab`W\UZWbS`OZ PSZWSPWUS 3aQO^SAS_cS\hS\ S\bVOZbS\ ?a^VaP\\ BcaX]V #) BcaX]V[XcTaP[T d]S 4bRP_TbT`dT]iT] \Xc Bh]cPgUTW[Ta public class String04 { public static void main(String[] args) { String str = 'Text \n mit Zeilenwechsel'; System.out.println(str); } } ÎQd]V id\ ?a^VaP\\ BcaX]V # 2Oa >`]U`O[[ S\bVÉZb SW\S\ Ag\bOfTSVZS` Ab`W\UZWbS`OZS [ºaaS\ W\ /\TºV`c\Uaab`W QVS\ abSVS\ 0WbbS Y]``WUWS`S\ AWS RWSa c\R TºV`S\ AWS ROa >`]U`O[[ Oca !!
(( merker2.doc
Stand: 22.12.2005 13:39:00 ))
# ITXRWT]ZTccT] P]fT]ST] bcaX]Vb
3KZNUJKTJKX)RGYY9ZXOTM
1UTYZX[QZUXKT 0SW[ 3`hScUS\ d]\ \ScS\ =PXSYbS\ eW`R W[[S` SW\ a] US\O\\bS` 9]\ab`cYb]` OcT US`cTS\ 2WSa Wab SW\S PSa]\RS`S 4]`[ SW\S` ;SbV]RS RS` XSeSWZWUS\ 9ZOaaS c\R S` a]`Ub ROTº` ROaa RWS DO`WOPZS\ RWS hc RS[ =PXSYb USVr`S\ W\WbWOZWaWS`b eS`RS\ 4º` ROa 3`abSZZS\ d]\ \ScS\ Ab`W\U]PXSYbS\ UWPb Sa W\ RS` 9ZOaaS BcaX]V dWSZS c\bS` aQVWSRZWQVS 9]\ab`cYb]`S\ h 0 // Leeres String-Objekt erzeugen (das Argument ist blank) String str1 = new String(); ]RS` // Kopie des Argument-Strings als Objekt erzeugen String str2 = new String("Meyer"); 2WS 9ZOaaS BcaX]V S\bVÉZb [SV` OZa # ;SbV]RS\ hc[ /`PSWbS\ [Wb HSWQVS\YSbbS\ h 0 Tº` ROa DS`YSbbS\ d]\ Ab`W\Ua ROa 3fb`OVWS`S\ Oca BSWZab`W\Ua ROa >]aWbW]\WS`S\ W\\S`VOZP RSa Ab`W\Ua ROa 3`aSbhS\ d]\ HSWQVS\
R^]RPc bdQbcaX]V RWPa0c aT_[PRT
EW` eS`RS\ XSbhb SW\WUS RS` DS`O`PSWbc\Ua[rUZWQVYSWbS\ Tº` Ab`W\Ua PSa^`SQVS\
public class String05 { public static void main(String[] args) { String vorname = "Roman"; String nachname = "Merker"; String name1, name2; name1 = vorname + " " + nachname; // 1.Möglichkeit name2 = vorname.concat(" " + nachname); // 2.Möglichkeit System.out.println(name1); System.out.println(name2); } }
!!
(( merker2.doc
Stand: 22.12.2005 13:39:00 ))
# !
1UT\KXZOKX[TM`]OYINKTVXOSOZO\KT:_VKT[TJ9ZXOTMY
2S` DS`YSbbc\Ua]^S`Ob]` YO\\ OcQV Tº` ES`bS PS\cbhb eS`RS\ RWS YSW\S Ab`W\Ua aW\R 2O\\ Y]\dS`bWS`b 8OdO RS\ ES`b W\ SW\S\ Ab`W\U c\R Y]\YObS\WS`b RO\OQV ?a^VaP\\ BcaX]V %) 0dc^\PcXbRWT D\fP]S[d]V X\_[XiXc public class String06 { public static void main(String[] args) { System.out.println("Bahnhofstr. " + 48); } } @SUSZ( ES\\ W\ SW\S[ /caR`cQY RS` =^S`Ob]` PS\cbhb eW`R a] YO\\ RWSa c\bS` aQVWSRZWQVS /YbW]\S\ hc` 4]ZUS VOPS\ ES\\ OZZS =^S`O\RS\ \c[S`WaQVS Bg^S\ aW\R eW`R US`SQV\Sb eS\\ OcQV \c` SW\ =^S`O\R W[ /caR`cQY SW\ Ab`W\U Wab a] eW`R Y]\YObS\WS`b 4º` RWS Sf^ZWhWbS C[eO\RZc\U d]\ SW\TOQVS\ 2ObS\bg^S\ W\ Ab`W\Ua Phe c[USYSV`b RWS 9]\dS`bWS`c\U SW\Sa Ab`W\Ua W\ SW\S\ ^`W[WbWdS\ 2ObS\bg^ S\bVÉZb RWS AbO\RO`R 0WPZW]bVSY dWSZTÉZbWUS ;rUZWQVYSWbS\ 2WSaSa BVS[O eW`R OcaTºV`ZWQV W[ 9O^WbSZ # PSVO\RSZb ?a^VaP\\ BcaX]V &) 4g_[XiXcTb :^]eTacXTaT] e^] IPW[T] X] BcaX]Vb public class String07 { public static void main(String[] args) { float f1 = 3.57f; int z1 = 123; String s1, s2; // s = z1; // liefert Umwandlungsfehler s1 = String.valueOf(f1); s2 = String.valueOf(z1); System.out.println(s1 + s2); // System.out.println(f1 + z1); } } 2WS US\S`SZZS\ @SUSZ\ PSW Bg^c[eO\RZc\US\ [Wb Ab`W\U aW\R( •
Ab`W\U W\ ^`W[WbWdS\ Bg^ c[eO\RSZ\( 2S` HWSZbg^ VOb ROTº` SW\S ;SbV]RS
•
>`W[WbWdS\ Bg^ W\ Ab`W\U c[eO\RSZ\( 2WS 9ZOaaS BcaX]V VOb ROTº` ;SbV]RS\
ÎQd]VT] id\ ?a^VaP\\ BcaX]V & ÎQd]V ( 9ZÉ`S\ AWS RWS 4`OUS eO`c[ RWS $ HSWZS a+h hc SW\S[ C[eO\RZc\Ua TSVZS` TºV`b c\R RSaeSUS\ OcaY][[S\bWS`b eS`RS\ [caabS <]bWS`S\ AWS OcT SW\S[ 0ZObb >O^WS` RWS W\bS`\S 2O`abSZZc\U RS` HSWQVS\ ! eS\\ aWS OZa 2ObS\bg^ X]c Q] !!!
(( merker2.doc
Stand: 22.12.2005 13:39:00 ))
# ITXRWT]ZTccT] P]fT]ST] bcaX]Vb
RWS`b eS`RS\ c\R RWS W\bS`\S 2O`abSZZc\U RS` HSWQVS\ ! eS\\ aWS OZa BcaX]V PS VO\RSZb eS`RS\ :rac\UaVW\eSWaS aWSVS 9O^WbSZ ! ÎQd]V !( ;]RWTWhWS`S\ AWS ROa >`]U`O[[ BcaX]V & YPeP a] ROaa RS` 9][[S\bO` W\ RS` R`WbbZSbhbS\ HSWZS S\bTS`\b eW`R ÍPS`^`ºTS\ AWS RWS /caUOPS RWSaS` HSWZS c\R dS` UZSWQVS\ AWS RWS 3`USP\WaaS ?a^VaP\\ BcaX]V ') :^]eTacXTaT] e^] BcaX]Vb X] 0aaPhb e^] 1hcTb public class String08 { public static void main(String[] args) String vorname = "Roman"; byte[] zeichen = vorname.getBytes(); } }
{
2Oa ]PWUS 0SWa^WSZ S\Q]RWS`b RS\ C\WQ]RSAb`W\U W\ SW\S AS_cS\h d]\ /A1770gbSa PS\cbhb ROPSW RS\ 2STOcZb1VO`OQbS`aSb RS` >ZObbT]`[ c\R a^SWQVS`b ROa 3`USP\Wa W\ SW\S[ /``Og d]\ 0gbSa ÎQd]V id\ ?a^VaP\\ BcaX]V ' 0WbbS S`UÉ\hS\ AWS ROa >`]U`O[[ c[ SW\S U^aAQVZSWTS W\ RS` RWS SW\hSZ\S\ 0gbSa RSa /``Oga OcaUSUSPS\ eS`RS\
2Oa DS`UZSWQVS\ d]\ Ab`W\Ua OcT W\VOZbZWQVS 5ZSWQVVSWb Wab SW\ VSWYZSa BVS[O 5`c\R aÉbhZWQV Wab RS` DS`UZSWQVa]^S`Ob]` ++ ]XRWc USSWU\Sb c[ Ab`W\Ua hc dS`UZSWQVS\ ?a^VaP\\ BcaX]V () BcaX]Vb fTaST] \Xc STa
ÎQd]V id\ ?a^VaP\\ BcaX]V ( 0WbbS Sf^S`W[S\bWS`S\ AWS [Wb RS[ >`]U`O[[ c[ RS\ C\bS`aQVWSR heWaQVS\ ++ c\R RS` ;SbV]RS T`dP[b VS`OcahcTW\RS\ !!"
(( merker2.doc
Stand: 22.12.2005 13:39:00 ))
# !
VÉ\][S\ S`YZÉ`b eS`RS\- 2S\\ \Obº`ZWQV UWPb Sa OcQV VWS`Tº` Z]UW aQVS 3`YZÉ`c\US\ 4aZ[Êad]V
2S` 1][^WZS` ]^bW[WS`b RWS A^SWQVS`c\U d]\ Ab`W\U]PXSYbS\ ES\\ Ab`W\Ua UZSWQVS 7\VOZbS VOPS\ abSVS\ aWS c\bS` C[abÉ\RS\ \c` SW\[OZ W[ A^SWQVS` VWS` VOPS\ OZ ZS`RW\Ua RWS c\bS`aQVWSRZWQVS\ 8D;a OcQV W\RWdWRcSZZS :rac\US\ 2WSaSa 0SWa^WSZ VOb V]TTS\bZWQV SW\R`cQYad]ZZ RS[]\ab`WS`b ROaa PSW[ DS`UZSWQV [Wb RS[ DS`UZSWQVa]^S`Ob]` ++ D]`aWQVb O\USP`OQVb Wab 3` ^`ºTb \É[ZWQV RWS ATUTaT]i ePaXPQ[T] OcT W\VOZbZWQVS 5ZSWQVVSWb
+OT`KRTK@KOINKTUJKX:KORYZXOTMY\KXGXHKOZKT
3W\ Ab`W\U YO\\ Tº` RWS DS`O`PSWbc\U eWS SW\ /``Og Oca SW\hSZ\S\ 1VO`OQbS` PSVO\ RSZb eS`RS\ 2Oa YO\\ W\ dWSZS\ 4ÉZZS\ aW\\d]ZZ aSW\ h 0 eS\\ XSRSa SW\hSZ\S HSW QVS\ W\ RS` HSWQVS\YSbbS OPUST`OUb c\R SdS\bcSZZ dS`O`PSWbSb eS`RS\ a]ZZ ?a^VaP\\ BcaX]V ) 3T] 1dRWbcPQT] a bdRWT] public class String10 { public static void main(String[] args) { String s1 = "Erwin Merker"; for (int i=0; i<s1.length(); i++) if (s1.charAt(i) == 'r') System.out.println("Buchstabe r " + "steht auf Stelle " + i); } } ÎQd]V) 0WbbS aQV`SWPS\ AWS SW\ \ScSa >`]U`O[[ ROa W[ Ab`W\U D]USZ\Sab ROa E]`b \Sab Sfb`OVWS`b W\ SW\S` \ScS\ Ab`W\UDO`WOPZS\ a^SWQVS`b c\R O[ 0WZRaQVW`[ OcaUWPb ;»bd]VbWX]fTXb) 3a UWPb RWS ;SbV]RS bdQbcaX]V) PWbbS YZÉ`S\ AWS RWS 3W\aObh[rU ZWQVYSWb RWSaS` ;SbV]RS O\VO\R RS` />72]Yc[S\bObW]\ !!#
(( merker2.doc
Stand: 22.12.2005 13:39:00 ))
# ITXRWT]ZTccT] P]fT]ST] bcaX]Vb
;»bd]Vbe^abRW[PV
public class String11 { public static void main(String[] args) String s1 = "Vogelnest"; String s2 = s1.substring(5,9); System.out.println(s2); } }
{
2S` ;SbV]RS bdQbcaX]V Yr\\S\ heSW >O`O[SbS` ºPS`USPS\ eS`RS\ RWS 7\RWQSa e^] QXb 8SR]QV Wab RWS AS[O\bWY ROPSW SbeOa SWUS\eWZZWU RS\\ RS` 7\RSf QXb PSRScbSb \WQVb SW\aQVZWSzZWQV a]\RS`\ RWSaS >]aWbW]\ PShSWQV\Sb ROa S`abS HSWQVS\ ROa ]XRWc Y]^WS`b eS`RS\ a]ZZ D]`bSWZ RWSaS` HÉVZeSWaS( 2WS :É\US RSa AcPab`W\Ua YO\\ Rc`QV QXb e^] SW\TOQV S``SQV\Sb eS`RS\
*OK3KZNUJKTJKX9ZXOTMQRGYYKYOTJG[ING[L9ZXOTMROZKXGRKGT]KTJHGX
?a^VaP\\ BcaX]V !( ;Ê]VT UTbcbcT[[T] d]S ITXRWT] d\fP]ST[]
public class String12 { public static void main(String[] args) { String name = "Merker"; System.out.println("Steinfurt".length()); System.out.println(name.toUpperCase()); } } ÒV\ZWQV eWS PSW /``Oga YO\\ [O\ OcQV Tº` Ab`W\Ua RWS :É\US TSababSZZS\ 0SW /``Oga YO\\ [O\ RS\ ES`b RS` DO`WOPZS\ [T]VcW OPT`OUS\ 0SW Ab`W\Ua aS\RSb [O\ RWS
=GYVGYYOKXZ]KTTKOT9ZXOTMUHPKQZMKoTJKXZ]OXJ%
8Sbhb e]ZZS\ eW` SW\S\ PSabSVS\RS\ Ab`W\U W\VOZbZWQV dS`É\RS`\ c[ WV\ O\ RS\ QVW \SaWQVS\ ;O`Yb O\hc^OaaaS\ ( ?a^VaP\\ BcaX]V ") 4abTciT] STa 1dRWbcPQT] a SdaRW [ public class String13 { public static void main(String[] args) String s1 = "Merker"; s1 = s1.replace('r', 'l'); System.out.println(s1); } }
{
!!$
(( merker2.doc
Stand: 22.12.2005 13:39:00 ))
# !
EOa PSW RWSaS` Ò\RS`c\U W[ A^SWQVS` US\Oc ^OaaWS`b eS`RS\ eW` \OQVT]ZUS\R \ÉVS` O\OZgaWS`S\
5HPKQZKJKX9ZXOTM1RGYYKYOTJ[T\KXoTJKXROINOSS[ZGHRK
Hc[ 3W\abWSU W\ RWSaSa BVS[O hc\ÉQVab T]ZUS\RS 0SVOc^bc\U( 3W\ =PXSYb RS` 9ZOaaS BcaX]V Wab c\dS`É\RS`ZWQV W[[cbOPZS R V [O\ YO\\ \c` ZSaS\R RO`OcT hcU`SWTS\ ES\\ SW\ Ab`W\U=PXSYb SW\[OZ [Wb SW\S[ ES`b USTºZZb Wab RO\\ YO\\ RWSaS` ES`b \WS[OZa USÉ\RS`b eS`RS\ EOa PSRScbSb ROa c\R eOa ^OaaWS`b h 0 PSW /caTºV`c\U RS` ;SbV]RS aT_[PRT W[ >`]U`O[[ BcaX]V "- /\e]`b( 3a eW`R SW\ Y][^ZSbb \ScS` Ab`W\U S`abSZZb c\R RO\\ RWS @STS`S\h W\ b S`aSbhb Rc`QV RWS A^SWQVS`OR`SaaS RSa \ScS\ =PXSYba 2Oa Wab RS` 5`c\R eO`c[ OZZS ;SbV]RS\ RWS SW\ Ab`W\U=PXSYb [] RWTWhWS`S\ OZa @ºQYUOPSbg^ SW\ Ab`W\U]PXSYb VOPS\ /PS` eOa ^OaaWS`b PSW SW\S` SW\TO QVS\ ES`bShceSWac\U- ?a^VaP\\ BcaX]V #) 0dRW
SXT ATaTaT]iePaXPQ[T Ê]STac bXRW public class String14 { public static void main(String[] args) String s1 = new String("Heidi"); String s2 = s1; System.out.println(s1 == s2); s2 = "Heidi"; System.out.print(s1 == s2); } }
{
2Oa >`]U`O[[ ZWSTS`b hcS`ab cadT RO\\ OPS` UP[bT hc[W\RSab PSW RS` Ac\8@3 c\bS` EW\R]ea 2O[Wb Wab YZO` ROaa RWS PSWRS\ Ab`W\U]PXSYbS \OQV RS` ES`bShceSWac\U heO` X]WP[c[XRW V[TXRW PQTa ]XRWc XST]cXbRW aW\R 3a ec`RS SW\ \ScSa =PXSYb S` hScUb EOa Wab RS` 5`c\R Tº` RWS OcT RS\ S`abS\ 0ZWQY c[abÉ\RZWQVS /`PSWbaeSWaS- /\be]`b( Ab`W\Ua eS`RS\ W\ SW\S[ >]]Z USVOZbS\ A] YO\\ [O\ S``SWQVS\ ROaa Ab`W\Ua RWS RS\aSZPS\ 7\VOZb VOPS\ \c` SW\[OZ W[ A^SWQVS` abSVS\ ES\\ OZa] T]ZUS\RS ES`bS hceSWac\US\ S`T]ZUS\(
a + 6SWRW) A + 6SWRW)
RO\\ Yr\\S\ RWS @STS`S\hS\ W\ b c\R b! UZSWQV aSW\ DS`ZOaaS\ YO\\ [O\ aWQV RO` OcT OPS` \WQVb RS\\ RWSa YO\\ d]\ XSRS` @c\BW[SC[USPc\U O\RS`a `SOZWaWS`b eS` RS\ ÎQd]V id\ ?a^VaP\\ BcaX]V # 9ZÉ`S\ AWS eWS OcT 7V`S[ AgabS[ RS` DS`UZSWQV s1 == s2 OcaTÉZZb eS\\ AWS d]` VS` OcQV RS` DO`WOPZS\ b! RS\ ES`b 6SWRW Sf^ZWhWb hceSWaS\ !!%
(( merker2.doc
Stand: 22.12.2005 13:39:00 ))
# ITXRWT]ZTccT] P]fT]ST] bcaX]Vb
3KZNUJKTJKX)RGYY9ZXOTM([ORJKX =GX[SMOHZKYJXKO9ZXOTM1RGYYKT%
2Oa ]PS\ PSaQV`WSPS\S DS`TOV`S\ Wab `SZObWd OcTeÉ\RWU 2WS 3\beWQYZS` aW\R ]TTS\ aWQVbZWQV ROd]\ OcaUSUO\US\ ROaa RWS D]`bSWZS RS` US[SW\aO[S\ `]U`O[[a dS`Yº`hb ]RS` dS`ZÉ\US`b eS`RS\ 2ORc`QV c\bS`aQVSWRS\ aWQV RWSaS PSWRS\ 9ZOaaS\ d]\ BcaX]V 4º` 3W\abSWUS` W\ RWS >`]U`O[[WS`c\U [Wb 8OdO UWZb UO\h SW\TOQV T]ZUS\RS @SUSZ( ES\\ Ab`W\UdO`WOPZS VÉcTWU USÉ\RS`b eS`RS\ [ºaaS\ a]ZZbS OZa 2ObS\bg^ BcaX]V1dX[ STa c\R \WQVb BcaX]V USeÉVZb eS`RS\ 2WSaS S\bVÉZb US\Oc eWS BcaX]V1dU hOVZ`SWQVS ;SbV]RS\ hc[ DS`É\RS`\ d]\ Ab`W\UW\VOZbS\ h 0 P__T]S X]bTac ST[TcT ]RS` aT_[PRT
?a^VaP\\ BcaX]V $) 0aQTXcT] \Xc 2[Pbb BcaX]V1dX[STa public class String15 { public static void main(String[] args) { StringBuilder sb1 = new StringBuilder("Vogel"); sb1.append("nest"); // Anhaengen System.out.println(sb1); sb1.replace(0,5,"Oster"); // Ersetzen System.out.println(sb1); sb1.delete(6,9); // Loeschen System.out.println(sb1); sb1.insert(6, " ist Urlaub"); // Einfuegen System.out.println(sb1); } } ?a^VaP\\ BcaX]V %) FT]] SXTbTb 1TXb_XT[ \Xc STa :[PbbT BcaX]V d]S STa QYTZcT P]VT[TVc public class String16 { public static void main(String[] args) { StringBuilder str = new StringBuilder(). append("Dieser ").append("Satz ").append("wird "). append("als ein ").append("Objekt angelegt"); System.out.println(str); } } !!&
(( merker2.doc
Stand: 22.12.2005 13:39:00 ))
# # BcaX]Vb P[b 2^\\P]S[X]T?PaP\TcTa
9ZXOTMYGRY)USSGTJROTK6GXGSKZKX
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public class String20 i public static void main(String[] args) for (int i=0; i < args.length; i++) System.out.println(args[i]); } k
{
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java String20 1 5 7
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public class String21 { public static void main(String[] args) { if (args.length == 0) System.out.println("Eingabedaten fehlen"); } } ÎQd]V 0WbbS Q]RWS`S\ AWS SW\ \ScSa >`]U`O[[ ROa T]ZUS\RS 4]`[OZ^`ºTc\U Rc`QVTºV`b c\R USUSPS\S\TOZZa SW\S S\ba^`SQVS\RS 4SVZS`[SZRc\U OcaUWPb( 3a [ºaaS\ heWaQVS\
!!'
(( merker2.doc
Stand: 22.12.2005 13:39:00 ))
# ITXRWT]ZTccT] P]fT]ST] bcaX]Vb
c\R [Of ! >O`O[SbS` ºPS`USPS\ eS`RS\ 9SW\ >O`O[SbS` RO`T [SV` OZa # HSWQVS\ VOPS\ ;»bd]Vbe^abRW[PV) FXTeXT[ d]S fT[RWT ?PaP\TcTa fdaST] ¶QTaVTQT].
public class String22 { public static void main(String[] args) { if (args.length == 0 || args.length > 3) System.out.println("Bitte 1 - 3 Parameter eingeben"); for (int i=0; i < args.length; i++) { if (args[i].length() > 5) { System.out.print("Mehr als 5 Zeichen nicht erlaubt "); System.out.println(args[i]); } } }
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public class String23 { public static void main (String[] args) { int anzahl = 0; if (args.length == 1) { if (args[0].equals("Help")) { System.out.println("Aufruf: java String23 Anzahl"); System.exit(1); } } try { anzahl = Integer.parseInt(args[0]); } catch (Exception e) { System.out.println("Es muss die Anzahl angegeben sein"); System.exit(0); } System.out.println("Die Anzahl ist: " + anzahl); } }
!"
(( merker2.doc
Stand: 22.12.2005 13:39:00 ))
# $ ITa[TVT] e^] CTgc
@KXRKMKT\UT:K^Z 3KZNUJKYVROZ
2WS ;SbV]RS b_[Xc RS` 9ZOaaS BcaX]V PWSbSb SW\S ;rUZWQVYSWb [Wb 6WZTS d]\ @SUcZÉ`S\ /caR`ºQYS\ SW\S\ AObh hc hS`ZSUS\ W\ SW\hSZ\S Er`bS` 2Oa BVS[O @SUcZÉ`S /ca R`ºQYS eW`R W[ /PaQV\Wbb " $ OcaTºV`ZWQV S`ZÉcbS`b VWS` hc\ÉQVab SW\ SW\TOQVSa 0SW a^WSZ Tº` ROa /`PSWbS\ [Wb b_[Xc ?a^VaP\\ ITa[TVT] ) 0dUb_[XccT] TX]Tb Z^\_[TccT] BPciTb
public class Zerlegen01 { public static void main(String[] args) { String s1 = "Dies ist ein Satz, der zerlegt wird"; String[] ergebnis = s1.split(" "); for (int i=0; i<ergebnis.length; i++) System.out.println(ergebnis[i]); } } 2Oa AbO\RO`RB`S\\hSWQVS\ RSZW[WbS` Tº` ROa A^ZWbbS\ Wab SW\S :SS`abSZZS PZO\Y ÎQd]V id\ ?a^VaP\\ ITa[TVT] Ò\RS`\ AWS ROa :WbS`OZ ROa W\ RS\ Ab`W\U b ºPS`b`OUS\ eW`R a] OP ROaa [SV`S`S :SS`abSZZS\ heWaQVS\ RS\ Er`bS`\ Xbc c\R TX] abSVS\ >`ºTS\ AWS RO\OQV RWS >`] U`O[[OcaUOPS 6W\eSWa( Hc[ 0SaQV`SWPS\ d]\ dO`WOPZS\ B`S\\hSWQVS\ PS\rbWUb [O\ @SUcZÉ`S /ca R`ºQYS 2WS :rac\U UWPb Sa W[ /PaQV\Wbb " $
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(( merker2.doc
Stand: 22.12.2005 13:39:00 ))
# ITXRWT]ZTccT] P]fT]ST] bcaX]Vb
?a^VaP\\ BRP]]Ta ) 4X][TbT] d]S 0dUcaT]]T] TX]Tb BPciTb P[b BcaX]V
import java.util.Scanner; public class Scanner01 { public static void main(String[] args) { Scanner eingabe = new Scanner(System.in); eingabe.useDelimiter(","); String s =eingabe.next(); System.out.println("Erster Teil: " + s); s =eingabe.next(); System.out.println("Zweiter Teil: " + s); } } ÎQd]V id\ ?a^VaP\\ BRP]]Ta 5SPS\ AWS hc[ BSabS\ PWbbS T]ZUS\RS\ AObh SW\( C[ =PXSYbS hc S`hScUS\ PS\cbhb [O\ ROa AQVZºaaSZe]`b \Se EWQVbWU Wab ROa 9][[O W[ AObh 2Oa 3`USP\Wa eW`R aSW\ ROaa RWS S`abS AObhVÉZTbS OZa 3QV] eWSRS` OcaUSUSPS\ eW`R Hc[ /\hSWUS\ RS` heSWbS\ AObhVÉZTbS [caa SW\ eSWbS`Sa B`S\\hSWQVS\ 9][[O SW\USUSPS\ eS`RS\ 2WS 9ZOaaS BRP]]Ta O`PSWbSb [Wb SW\S[ d]`OcaaQVOcS\RS\ :SaS\ RSa BSfbSa 2Ohc UWPb Sa RWS ;SbV]RS WPb=Tgc 2WSaS ;SbV]RS Wab PSa]\RS`a VWZT`SWQV PSW[ 4]`[cZWS `S\ d]\ :SaSaQVZSWTS\ aWS ^`ºTb ]P eSWbS`S 2ObS\ d]`ZWSUS\ c\R RO\\ YO\\ hc[ SWUS\bZWQVS\ :SaS\ RWSaS` 2ObS\ RWS ;SbV]RS ]Tgc PS\cbhb eS`RS\ ?a^VaP\\ BRP]]Ta !) ;TbT] X] BRW[TXUT \Xc WPb=Tgc d]S ]Tgc import java.util.Scanner; class Scanner02 { public static void main(String[] args) { Scanner eingabe = new Scanner(System.in); String zeilenende = System.getProperty("line.separator"); eingabe.useDelimiter(zeilenende); // Delimiter aendern while (eingabe.hasNext()) System.out.println(eingabe.next()); }
} 2Oa ]PWUS >`]U`O[[ ^`ºTb [Wb WPb=Tgc ]P Sa B]YS\ W[ 3W\UOPSab`][ UWPb ES\\ \WQVb PZSWPb Sa a]ZO\US abSVS\ PWa RS` Ab`SO[ 2ObS\ S\bVÉZb 2Oa YO\\ SW\ hcaÉbhZW QVSa E]`b ]RS` SW\ 2SZW[WbS` aSW\ 2O\\ eW`R RS` P]]ZSaQVS ES`b cadT USZWSTS`b RS` AQVZSWTS\`c[^T OcaUSTºV`b c\R WPb=Tgc abO`bSb \Sc 0SS\RSb eW`R ROa >`]U`O[[ Rc`QV 3W\UOPS SW\Sa 2ObSWS\RSHSWQVS\a 7\ ;AEW\R]ea Wab RWSa 1B@:1 2WS `SacZbWS`S\RS\ B]YS\ Yr\\S\ PSW[ :SaS\ Rc`QV a^ShWSZZS ;SbV]RS\ c[USeO\ RSZb eS`RS\ W\ SW\USPOcbS 2ObS\bg^S\ W\RS[ RWS S\ba^`SQVS\RS\ :SaS[SbV]RS\ !"
(( merker2.doc
Stand: 22.12.2005 13:39:00 ))
# % ATVd[ÊaT 0dbSa¶RZT
PS\cbhb eS`RS\ h 0 ]Tgc8]c hc[ 3W\ZSaS\ d]\ 5O\hhOVZS\ ]RS` ]Tgc5[^Pc hc[ 3W\ ZSaS\ d]\ 5ZSWbY][[OhOVZS\ ?a^VaP\\ BRP]]Ta ") 4X][TbT] e^] TX]VTQPdcT] 3PcT]ch_T] import java.util.Scanner; class Scanner03 { public static void main(String[] args) { Scanner eingabe = new Scanner(System.in); eingabe.useDelimiter(","); // Delimiter aendern String str = eingabe.next(); // Komplettes Wort lesen int zahl1 = eingabe.nextInt(); // Ganzzahl lesen double zahl2 = eingabe.nextDouble(); // E-Format z.B. 5e3 lesen System.out.printf("%s | %d | %f", str, zahl1,zahl2); } }
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•
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8KM[RoXK'[YJXIQK
@SUcZÉ`S /caR`ºQYS eS`RS\ Tº` ROa Y][T]`bOPZS 2c`QVacQVS\ d]\ BSfbS\ SW\US aSbhb 3a eW`R SW\ AcQVPSU`WTT T]`[cZWS`b) RO\OQV ºPS`^`ºTb 8OdO ]P RWSaSa ;cabS` W[ BSfb USTc\RS\ eW`R c\R abSZZb RS\ USTc\RS\S\ Ab`W\U Tº` RWS eSWbS`S DS`O`PSWbc\U hc` DS`TºUc\U 7\ 8OdO eS`RS\ `SUcZÉ`S /caR`ºQYS Rc`QV ROa >OYSb YPeP dcX[ aTVTg c\bS`abºbhb 2WSaSa >OYSb S\bVÉZb \c` RWS 9ZOaaS\ ?PccTa] c\R ZObh VOZbS` RWS\S\ ]RS` OcQV @SUSZ\ Tº` RWS AcQVS PSaQV`SWPS\ 2WS eSaS\bZWQVS\ A]\ RS`hSWQVS\ c\R AcQV`SUSZ\ eS`RS\ VWS` Yc`h d]`USabSZZb( !"!
(( merker2.doc
Stand: 22.12.2005 13:39:00 ))
# ITXRWT]ZTccT] P]fT]ST] bcaX]Vb
J\ Ja I K J L j
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3W\ ;cabS` eWS AS eW`R a]e]VZ ASS OZa OcQV ASO TW\RS\ 2S` `SUcZÉ`S /caR`cQY AQVWITKOV`b TW\RSb AQVWTOV`b AQVWTTOV`b cae OPS` SPS\ OcQV AQVWOV`b ;Wb RS[ /ca R`cQY AQVWITKOV`b eW`R [W\RSabS\a SW\ T S`hec\US\ 3W\S <SUWS`c\U SW\Sa HSW QVS\a ]RS` 0S`SWQVSa S`T]ZUb [Wb L OZa] ZÉaab IL 'K YSW\S HOVZ hc /ZZS O\RS`S\ HSWQVS\ RWS YSW\ A]\RS`hSWQVS\ aW\R [ºaaS\ US\Oc a] eWS O\USUS PS\ W[ BSfb d]`Y][[S\ RO[Wb RWS AcQVS S`T]ZU`SWQV Wab C[ SW\ HSWQVS\ ROa OcQV OZa A]\RS`hSWQVS\ RSTW\WS`b ec`RS W[ BSfb hc TW\RS\ Wab RS` 0OQYaZOaV J OZa 4ZcQVbhSWQVS\ 3aQO^SAS_cS\h O\hcUSPS\ h 0 Tº` ROa 2]ZZO`hSWQVS\ OZa] J
*OK1RGYYK6GZZKXT
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!""
(( merker2.doc
Stand: 22.12.2005 13:39:00 ))
# % ATVd[ÊaT 0dbSa¶RZT
3W\S VÉcTWUS /cTUOPS\abSZZc\U W\ RS` 32D Wab ROa HS`ZSUS\ SW\Sa Ab`W\Ua W\ aSW\S 0S abO\RbSWZS O\VO\R d]\ B`S\\hSWQVS\ 6ÉcTWU bOcaQVS\ >`]U`O[[S 2ObS\ ºPS` 7[ ^]`b 3f^]`bBSfbRObSWS\ Oca 7\ RWSaS\ abSVb RWS 7\T]`[ObW]\ RO\\ hSWZS\eSWaS SW\ TOQV Rc`QV AS[WY]Z]\ ]RS` 9][[O USb`S\\b 1AD4WZSa C[ RWSaS 2ObS\ \OQV RS[ 3W\ZSaS\ eWSRS` hc hS`ZSUS\ PWSbSb RWS >ObbS`\9ZOaaS RWS aSV` \ºbhZWQVS ;S bV]RS b_[Xc 2WSaS ;SbV]RS hS`ZSUb SW\S\ Ab`W\U O\VO\R SW\Sa `SUcZÉ`S\ /caR`cQYSa c\R abSZZb RWS 3`USP\WaaS W\ SW\ /``Og ?a^VaP\\ ATV4g ") ITa[TVT] e^] BcaX]Vb
ÎQd]V id\ ?a^VaP\\ ATV4g " Ò\RS`\ AWS ROa >`]U`O[[ a] OP ROa OZa B`S\\hSWQVS\ a]e]VZ AS[WY]Z]\ 9][[O c\R EVWbSa^OQS dS`eS\RSb eS`RS\ 2S` hc c\bS`acQVS\RS Ab`W\U Wab SW\a heSW) R`SWdWS` ;»bd]Vbe^abRW[PV) import java.util.regex.*; public class RegEx04 { public static void main(String[] args) { Pattern p = Pattern.compile(";|,|\\s"); String[] erg = p.split("eins zwei;drei,vier"); for (int i=0; i<erg.length; i++) System.out.println(erg[i] + '\n'); } } ÎQd]V id\ ?a^VaP\\ ITa[TVT] Pdb 0QbRW]Xcc # $ )
2Oa >`]U`O[[ O`PSWbSb [Wb RS` b_[Xc;SbV]RS RS` 9ZOaaS BcaX]V :SWRS` Wab RS` A^ZWb d]`UO\U W\ RS` PWaVS`WUS\ DO`WO\bS eS\WU Y][T]`bOPSZ h 0 eS`RS\ [SV`S`S 0ZO\Ya heWaQVS\ RS\ Er`bS`\ \WQVb `WQVbWU dS`O`PSWbSb /PS` XSbhb YS\\S\ AWS @SUcZÉ`S /ca R`ºQYS c\R RWS Yr\\S\ OcQV W\ RS` b_[Xc;SbV]RS RS` 9ZOaaS BcaX]V SW\USaSbhb eS`RS\ Ò\RS`\ AWS RSaVOZP ROa >`]U`O[[ a] OP ROaa W[ Ab`W\U OcQV \TWaTaT 0ZO\Ya heW aQVS\ RS\ SW\hSZ\S\ Er`bS`\ `WQVbWU S`YO\\b eS`RS\ !"#
(( merker2.doc
Stand: 22.12.2005 13:39:00 ))
# ITXRWT]ZTccT] P]fT]ST] bcaX]Vb
;»bd]Vbe^abRW[PV public class Zerlegen02 { public static void main(String[] args) { String s1 = "Dies ist ein Satz, der zerlegt werden soll"; String[] ergebnis = s1.split(" +"); for (int i=0; i<ergebnis.length; i++) System.out.println(ergebnis[i]); } }
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!"$
(( merker2.doc
Stand: 22.12.2005 13:39:00 ))
# & BcaX]Vb d]S D]XR^ST
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public class Utf08 { public static void main(String[] args) String str1 = "A\u0001\u0093";
throws Exception {
// Konvertieren String in UTF byte[] b1 = str1.getBytes("UTF8"); for (int i=0; i
(( merker2.doc
Stand: 22.12.2005 13:39:00 ))
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(( merker2.doc
Stand: 22.12.2005 13:39:00 ))
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(( merker2.doc
Stand: 22.12.2005 13:39:00 ))
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?a^VaP\\ :^]eTabX^] ) bW^ac PdU [^]V TafTXcTa] Pdc^\PcXbRW public class Konversion01 { public static void main(String[] args) short a = 123; long b = a; } }
{
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(( merker2.doc
Stand: 22.12.2005 13:39:00 ))
$ 4afTXcTa]ST :^]eTacXTad]V QTX TX]UPRWT] Ch_T]
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{
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public class Konversion03 { public static void main(String[] args) byte b = 66; System.out.println((char)b); } }
{
2WSa eO` SW\ 0SWa^WSZ Tº` ROa Sf^ZWhWbS 1OabW\U 7[ T]ZUS\RS\ >`]U`O[[ eS`RS\ UZSWQV [SV`S`S Bg^O\^Oaac\US\ S`T]`RS`ZWQV( hc\ÉQVab eS`RS\ RWS 2ObS\bg^S\ RS` :WbS`OZS S`[WbbSZb c\R RO\\ ROa 3`USP\Wa O\US^Oaab O\ RS\ 3[^TÉ\US` RS` HceSW ac\U ?a^VaP\\ :^]eTabX^] $) 8\_[XiXcTb 2PbcX]V QTX IdfTXbd]V public class Konversion05 { public static void main(String[] args) char z1 = 75 + 2; long z2 = 0x4b + 1; System.out.printf("%c %d ", z1,z2); } }
{
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public class Konversion06
{ !#
(( merker2.doc
Stand: 22.12.2005 13:39:00 ))
$ Ch_d\fP]S[d]VT] eTabcTWT] RPbcX]V
public static void main(String[] args) short a = 110; float b = 456789.1f; float erg = a * b; System.out.println(erg); }
{
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2Oa \ÉQVabS 0SWa^WSZ RS[]\ab`WS`b ROaa SW\S Ocb][ObWaQVS Bg^O\^Oaac\U OcQV PSW RS` ÍPS`UOPS d]\ /`Uc[S\bS\ S`T]ZUb 2S` OYbcSZZS >O`O[SbS` eW`R O\US^Oaab O\ RS\ Bg^ RSa T]`[OZS\ >O`O[SbS`a RS` d][ 3[^TÉ\US` S`eO`bSb eW`R ?a^VaP\\ :^]eTabX^] &) Ch_P]_Pbbd]V QTX TX]Ta ?PaP\TcTa¶QTaVPQT public class Konversion07 { public static void main (String[] args) { ausgeben(25); } static void ausgeben(double zahl) { System.out.println(zahl); } } ÎQd]V id\ ?a^VaP\\ :^]eTabX^] & ;OQVS\ AWS T]ZUS\RSa 3f^S`W[S\b( Ò\RS`\ AWS RS\ Bg^ RSa T]`[OZS\ >O`O[SbS`a d]\ S^dQ[T OcT X]c Ò\RS`\ AWS OczS`RS[ RS\ ;SbV]RS\OcT`cT a] ROaa OZa OYbcSZZS` >O `O[SbS` SW\ 5ZSWbY][[OeS`b ºPS`USPS\ eW`R 7ab SW\S TSVZS`T`SWS C[eO\RZc\U [rUZWQV- ES\\ \SW\ TW\RS\ AWS W\ RS[ \ÉQVabS\ /PaQV\Wbb RWS :rac\U Tº` RWSaS /cTUOPS !#
(( merker2.doc
Stand: 22.12.2005 13:39:00 ))
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>`]PZS[ObWaQV Wab SW\S C[eO\RZc\U d]\ SW\S[ P`SWbS`S\ 2ObS\bg^ W\ SW\S\ aQV[OZS `S\ Bg^ RS\\ ROPSW Yr\\S\ 7\T]`[ObW]\S\ dS`Z]`S\ USVS\ 2WS d]`VS`WUS ÍPc\U S\bVWSZb SW\ 0SWa^WSZ Tº` RWSaS AWbcObW]\ 2Oa UZSWQVS >`]PZS[ YO\\ OcQV PSW SW\S` ES`bShceSWac\U S\babSVS\ ]RS` PSW RS` \c[S`WQ ^`][]bW]\ d]\ O`WbV[SbWaQVS\ /caR`ºQYS\ Hc\ÉQVab SW\ 0SWa^WSZ Tº` SW\S HceSWac\U SW\S` ZO\US\ DO`WOPZS\ W\ SW\S DO`WOPZS [Wb SW\S[ aQV[OZS`S\ ES`bSPS`SWQV ?a^VaP\\ :^]eTabX^] ') 4X] ETabdRW e^] [^]V PdU bW^ac eTaZ¶aiT] public class Konversion08 { public static void main(String[] args) long a = 1234567; short b = a; } }
{
2WSaS 1]RWS`c\U TºV`b hc SW\S[ C[eO\RZc\UaTSVZS` [Wb RS` ;SZRc\U( >]aaWPZS Z]aa ]T ^`SQWaW]\ C[ RS\\]QV RWS 9]\dS`bWS`c\U hc S`heW\US\ [caa RWSa d][ >`] U`O[[WS`S` OcaR`ºQYZWQV Q]RWS`b eS`RS\ c\R heO` Rc`QV 6W\aQV`SWPS\ RSa HWSZRO bS\bg^a W\ `c\RS\ 9ZO[[S`\ ?a^VaP\\ :^]eTabX^] () 4aifX]VT] STa Ch_d\fP]S[d]V SdaRW 2PbcX]V public class Konversion09 { public static void main(String[] args) long a = 123; short b = (short)a; System.out.println(b); } }
{
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(( merker2.doc
Stand: 22.12.2005 13:39:00 ))
$ Ch_d\fP]S[d]VT] eTabcTWT] RPbcX]V
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public class Konversion10 i public static void main (String[] args) { ausgeben((int)25.3); } static void ausgeben(int zahl) { System.out.println(zahl); } } 2c`QV RWS Sf^ZWhWbS /\UOPS RSa HWSZbg^a eW`R SW\S C[eO\RZc\U RSa 2ObS\bg^a d][ >`]U`O[[WS`S` S`hec\US\ 2O[Wb ºPS`\W[[b S` OcQV RWS DS`O\be]`bc\U ROTº` ]P ROa 3`USP\Wa aW\\d]ZZ Wab ]RS` \WQVb ?a^VaP\\ :^]eTabX^]
) Ch_d\fP]S[d]V QTX 6[TXcZ^\\PIPW[T]
public class Konversion11 { public static void main(String[] args) double a = 12345678E300; float b = a; // Fehler ! System.out.println(a); } } ÎQd]V \Xc ?a^VaP\\ :^]eTabX^]
{
2Oa >`]U`O[[ S\bVÉZb SW\S\ T]`[OZS\ 4SVZS` RS` PSW RS` C[eO\RZc\U TSabUSabSZZb eW`R 0WbbS Y]``WUWS`S\ AWS RS\ ?cSZZbSfb ?a^VaP\\ :^]eTabX^] !) 4g_[XiXcTb 2PbcX]V \Xc 3PcT]eTa[dbc
public class Konversion12 { public static void main(String[] args) { double a; long b = 12345678912348999L; a = b; // korrekt b = (long)a; // Datenverlust System.out.println(b); } } 2WS 0ShSWQV\c\U Bg^c[eO\RZc\U Yr\\bS acUUS`WS`S\ ROaa RWS DS`Yº`hc\U RSa 2ObS\bg^a ROhc TºV`b ROaa RS` \ScS ES`b RS` DO`WOPZS\ \OQV SW\S[ OcaUSTSWZbS\ DS`TOV`S\ S`[WbbSZb eW`R 7\ EW`YZWQVYSWb Wab Sa UO\h SW\TOQV a] ROaa \WQVb c[USeO\ RSZb a]\RS`\ ZSRWUZWQV OPUSaQV\WbbS\ Phe OcTUSTºZZb eW`R
!#"
(( merker2.doc
Stand: 22.12.2005 13:39:00 ))
$ " ETaP[[VT\TX]Ta]ST :^]eTacXTad]V QTX ATUTaT]ich_T]
8Sbhb T]ZUb \]QV SW\ 0SWa^WSZ ROa hSWUb ROaa OcQV SW\S S`eSWbS`\RS 9]\dS`bWS`c\U [O\QV[OZ S`hec\US\ eS`RS\ [caa RO[Wb ºPS`VOc^b SW\ Y]``SYbSa 3`USP\Wa S\babS VS\ YO\\ ?a^VaP\\ :^]eTabX^] ") 4afTXcTa]STb 2PbcX]V TaifX]VT] public class Konversion13 { public static void main(String[] args) { double erg; int x = 5; int y = 3; erg = x / y; // Abschneiden System.out.println(erg); erg = (double)x / y; // Korrekt System.out.println(erg); } }
5S\S`SZZ Wab SW\S 9]\dS`bWS`c\U PSW @STS`S\hbg^S\ \c` [rUZWQV eS\\ SW\S DS` eO\RbaQVOTb PSabSVb heWaQVS\ RS\ 9ZOaaS\ 3a [caa aWQV OZa] c[ SW\S =PS` c\R C\bS`YZOaaS VO\RSZ\ R V aWS [ºaaS\ W\ SW\S` DS`S`Pc\UaPShWSVc\U abSVS\ Rc`QV ROa AQVZºaaSZe]`b TgcT]Sb 9SW\S >`]PZS[S UWPb Sa eS\\ RWS @STS`S\h SW\S` C\bS`YZOaaS c[USRScbSb eW`R OcT SW\S @STS`S\h RS` =PS`YZOaaS 8SRS C\bS`YZOaaS S\bVÉZb OZZS 3ZS[S\bS RS` =PS`YZOaaS a] ROaa RWSaS C[RScbc\U heO` hc 7\T]`[ObW]\adS`Zcab TºV`S\ YO\\ OPS` bSQV\WaQV c\R T]`[OZ YSW\S >`]PZS[S dS`c`aOQVb RS\\ RWS AcPYZOaaS YO\\ c\R VOb [W\RSabS\a ROa OZZSa eOa RWS =PS`YZOaaS S\bVÉZb ?a^VaP\\ :^]eTabX^]! ) 8\_[XiXcT Ch_P]_Pbbd]V QTX ETaP[[VT\TX]Tad]V public class Konversion20 { public static void main(String[] args) A referenzA = new A(); B referenzB = new B(); referenzA = referenzB; } } class A {} class B extends A {}
{
2WS ES`bShceSWac\U d]\ 0 \OQV / Wab ]V\S >`]PZS[S [rUZWQV ROPSW TW\RSb SW\S Oc b][ObWaQVS 9]\dS`bWS`c\U RSa Bg^a d]\ c\bS\ 0 \OQV ]PS\ / abObb 2OPSW PZSW PS\ W\bS`\ RWS a^ShWSZZS\ 7\T]`[ObW]\S\ ºPS` RWS AcPYZOaaS S`VOZbS\ !##
(( merker2.doc
Stand: 22.12.2005 13:39:00 ))
$ Ch_d\fP]S[d]VT] eTabcTWT] RPbcX]V
9VK`OGROYOKXKTJK1UT\KXZOKX[TMHKO8KLKXKT`Z_VKT
5O\h O\RS`a Wab RWS AWbcObW]\ PSW SW\S` @STS`S\h OcT RWS =PS`YZOaaS RWS \c\ OZa @STS `S\h W\bS`^`SbWS`b eS`RS\ a]ZZ RWS OcT SW\ ROd]\ OPUSZSWbSbSa =PXSYb hSWUb 2WS C\ bS`YZOaaS S\bVÉZb [SV` 7\T]`[ObW]\S\ /bb`WPcbS c\R ]RS` ;SbV]RS\ OZa RWS Ac^S` YZOaaS 2SaeSUS\ eW`R RWSaS` DS`acQV d][ 1][^WZS` OPUSZSV\b ?a^VaP\\ :^]eTabX^]! ) ATUTaT]ich_ b_TiXP[XbXTaT] public class Konversion21 { public static void main(String[] args) { A referenzA = new A(); B referenzB = new B(); referenzB = referenzA; // Fehler, inkompatibel } } class A {} class B extends A {} 2S` >`]U`O[[WS`S` YO\\ OPS` OcQV VWS` ROa 1OabW\U S`heW\US\ US\Oc eWS PSW RS\ ^`W[WbWdS\ 2ObS\bg^S\ 2WS 9]\dS`bWS`c\U eW`R OcQV PSW @STS`S\hbg^S\ S`hec\US\ Rc`QV /\UOPS RSa 1Oab=^S`Ob]`a 2S` 1Oab=^S`Ob]` PSabSVb Oca RS[ _TaPc^a QTX ATUTaT]ich_T]
public class Konversion22 { public static void main(String[] args) A referenzA = new A(); B referenzB = new B(); referenzB = (B)referenzA; } } class A {} class B extends A {}
{
8Sbhb Wab SW\S TSVZS`T`SWS C[eO\RZc\U [rUZWQV /PS`( 0SW[ DS`acQV ROa >`]U`O[[ OcahcTºV`S\ UWPb Sa SW\S\ /PP`cQVTSVZS` @c\BW[S3``]`( 1Oab3fQS^bW]\ 2S` 5`c\R Tº` RWSaS\ 4SVZS`( EW` VOPS\ dS`acQVb Oca SW\S[ @STS`S\hbg^ RS` OZZUS [SW\S\ 9ZOaaS / SW\S\ a^ShWOZWaWS`bS\ Bg^ RS` 9ZOaaS 0 hc [OQVS\ 2Oa USVb \WQVb ]RS` PSaaS` USaOUb ROa USVb \c` eS\\ Sa aWQV OcQV eW`YZWQV c[ RWSaS\ a^ShWOZWaWS` bS\ Bg^ VO\RSZb ;SV` AQVSW\ OZa ASW\ ZÉzb RWS 8D; \WQVb hc !#$
(( merker2.doc
Stand: 22.12.2005 13:39:00 ))
$ # B_TiXP[XbXTaT]ST :^]eTacXTad]V QTX ATUTaT]ich_T]
EWQVbWUS @SUSZ( `]U`O[[WS`S` aWQV UO\h aWQVS` Wab ROaa RWS @STS`S\h W\ EOV`VSWb SW\S @STS`S\h OcT RWS AcPYZOaaS Wab RO`T ROa 1OabW\U S`hec\US\ eS`RS\ O\RS`\TOZZa TºV`b RS` Sf^ZWhWbS 1Oab hc SW\S[ @c\BW[S4SVZS` FXT ZP]] bXRWTaVTbcT[[c fTaST] SPbb ZTX]T ;PdUiTXcUTW[Ta T]cbcTWT]. 3a UWPb SW\S\ =^S`Ob]` [Wb RSaaS\ 6WZTS hc` :OcThSWb ºPS`^`ºTb eS`RS\ YO\\ OcT eSZQVS\ 2ObS\bg^ SW\S @STS`S\h dS`eSWab( X]bcP]RT^U 2WSa Wab RS` R`W\US\R S[^ T]VZS\S ESU c[ aWQVS` hc abSZZS\ ROaa YSW\ TOZaQVSa 1OabW\U Rc`QVUSTºV`b eW`R ?a^VaP\\ :^]eTabX^]!") ;PdUiTXcch__a¶Ud]V SdaRW X]bcP]RT^U public class Konversion23 { public static void main(String[] args) { A referenzA = new A(); B referenzB = new B(); if (referenzA instanceof B) referenzB = (B)referenzA; else System.out.println("Kein Casting möglich"); } } class A {} class B extends A {} 2Oa \ÉQVabS 0SWa^WSZ RS[]\ab`WS`b PSWRS /`bS\ RS` 9]\dS`bWS`c\U d]\ @STS`S\hS\ ?a^VaP\\ :^]eTabX^]!#) ETaP[[VT\TX]Tad]V d]S B_TiXP[XbXTad]V SdaRW 2PbcX]V
import java.awt.Point; public class Konversion24 { public static void main(String[] args) Point p1, p2; Object object;
{
p1 = new Point(100,200); p2 = new Point(300,400); object = new Object(); object = p1; // generalisierende Konvertierung p2 = (Point)object; // spezialisierende Konvertierung System.out.println(p2); } } !#%
(( merker2.doc
Stand: 22.12.2005 13:39:00 ))
$ Ch_d\fP]S[d]VT] eTabcTWT] RPbcX]V
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<]beS\RWU Wab RS` 3W\aObh RWSaS` E`O^^S`9ZOaaS\ h 0 W[[S` RO\\ eS\\ SW\S ;S bV]RS OcaaQVZWSzZWQV =PXSYbS OZa] @STS`S\hbg^S\ OZa >O`O[SbS` OYhS^bWS`b c\R YSW \S ^`W[WbWdS\ 2ObS\bg^S\ hcZÉaab 7\ RS\ [SWabS\ 4ÉZZS\ S`T]ZUb RO\\ ROa 3W\^O QYS\ e`O^^W\U P]fW\U Ocb][ObWaQV R V Oca RS[ SW\TOQVS\ 2ObS\bg^ eW`R ]V\S PSa]\RS`S D]`YSV`c\U Rc`QV RS\ >`]U`O[[WS`S` SW\ @STS`S\hbg^ RS` E`O^^S`YZOaaS S`hScUb 2WSaS` D]`UO\U eW`R /cb]P]fW\U US\O\\b C[USYSV`b S`T]ZUb OcQV ROa /ca^OQYS\ c\P]fW\U W\ RS\ [SWabS\ 4ÉZZS\ Ocb][ObWaQV W\bBg^
=PXSYb
@STS`S\hD
/PP # ( 0SWa^WSZ Tº` ROa E`O^^S\ SW\S` ^`W[WbWdS\ W\bDO`WOPZS\ 7\ [O\QVS\ AWbcObW]\S\ [caa ROa /`PSWbS\ [Wb RS\ E`O^^S`9ZOaaS\ OPS` OcaR`ºQY ZWQV Q]RWS`b eS`RS\ 2O[Wb hc\ÉQVab SW\[OZ ^`OYbWaQV USºPb eS`RS\ YO\\ eWS [O\ [Wb E`O^^S`YZOaaS\ O`PSWbSb hSWUb ROa >`]U`O[[ FaP__Ta eWS SW\S UO\hS HOVZ OZa =PXSYb S`hScUb c\R dS`O`PSWbSb eW`R ?a^VaP\\ FaP__Ta ) 6P]iiPW[ P[b TX]UPRWTa 3PcT]ch_ d]S P[b ATUTaT]ich_ class Wrapper01 { public static void main(String[] args) int zahl1 = 15; // Integer zahl1 = new Integer(15); System.out.println(zahl1); } }
{
!#&
(( merker2.doc
Stand: 22.12.2005 13:39:00 ))
$ $ Ch_D\fP]S[d]V ifXbRWT] TX]UPRWT] d]S ATUTaT]ich_T]
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'[ZUHU^OTM;THU^OTM
2Oa 3W\ ]RS` /ca^OQYS\ S`T]ZUb W[[S` RO\\ Ocb][ObWaQV eS\\ 8OdO S`YS\\b ROaa RWSa \]beS\RWU c\R [rUZWQV Wab 0SWa^WSZ( ES\\ ^`W[WbWdS Bg^S\ O\ RWS ;SbV]RS _aX]cU ºPS`USPS\ eS`RS\ RO\\ eS`RS\ RWSaS SW\TOQVS\ Bg^S\ W\ =PXSYbS RS` XSeSW ZWUS\ 9ZOaaS c[USeO\RSZb aWS eS`RS\ SW\US^OQYb W\ SW\S 0]f OcT S\UZWaQV( Oc b]P]fW\U ]RS` Ocb]e`O^^W\U /cQV RS` c[USYSV`bS D]`UO\U ROa 3\b^OQYS\ ] RS` c\P]fW\U YO\\ S`T]ZUS\ ]V\S ROaa RS` >`]U`O[[WS`S` ROTº` PSa]\RS`S D]` YSV`c\US\ b`STTS\ [caa ?a^VaP\\ 1^gX]V ) 0dc^\PcXbRWTb 1^gX]V D]Q^gX]V
class Boxing01 { public static void main(String[] args) int zahl1 = 15; Integer zahl2 = new Integer(25); System.out.println(zahl1 + zahl2); zahl1 = zahl2; System.out.println(zahl1); } }
{
// Autoboxing // Auto-Unboxing
1UT\KXZOKXKTSOZYVK`OKRRKT3KZNUJKT
EWS PS`SWba [SV`TOQV PSb]\b PWSbSb RWS 8OdOA^`OQVS YSW\S ;rUZWQVYSWb c[ [Wb SW \S[ 1OabW\U=^S`Ob]` heWaQVS\ SW\TOQVS\ c\R @STS`S\hbg^S\ hc Y]\dS`bWS`S\ /PS` Sa UWPb ;SbV]RS\ hc[ C[eO\RSZ\ d]\ Ab`W\U]PXSYbS\ W\ ^`W[WbWdS Bg^S\ c\R OcQV ;SbV]RS\ c[ SW\TOQVS Bg^S\ W\ Ab`W\U]PXSYbS hc Y]\dS`bWS`S\ D\fP]ST[] e^] TX]UPRWT] Ch_T] X] BcaX]V^QYTZcT 2WS E`O^^S`YZOaaS\ S\bVOZbS\ SW\S c^BcaX]V;SbV]RS RWS SW\S Ab`W\U@S^`ÉaS\bObW]\ Tº` SW\S\ SW\TOQVS\ 2ObS\bg^ ZWSTS`b EW` eWaaS\ OcQV PS`SWba ROaa c^BcaX]V d]\ PS abW[[bS\ ;SbV]RS\ Ocb][ObWaQV OcTUS`cTS\ eW`R a] h 0 d]\ RS` _aX]c[];SbV]RS !#'
(( merker2.doc
Stand: 22.12.2005 13:39:00 ))
$ Ch_d\fP]S[d]VT] eTabcTWT] RPbcX]V
?a^VaP\\ :^]eTac
{
D\fP]ST[] e^] BcaX]V X] TX]UPRWT Ch_T] 4º` RS\ c[USYSV`bS\ ESU \É[ZWQV ROa Hc`ºQYTºV`S\ SW\Sa Ab`W\U]PXSYba W\ SW\S\ ^`W[WbWdS\ 2ObS\bg^ UWPb Sa [SV`S`S ;rUZWQVYSWbS\( •
S\beSRS` eW`R SW\S ;SbV]RS RS` S\ba^`SQVS\RS\ E`O^^S`YZOaaS OcTUS`cTS\
•
]RS` Sa eW`R SW\S ;SbV]RS SW\S` Ab`W\UYZOaaS BcaX]V BcaX]V1dU ]RS` BcaX]V1dX[ STa
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{
?a^VaP\\ :^]eTac
{
8SRS E`O^^S`YZOaaS S\bVÉZb RWS S\ba^`SQVS\RS ^O`aSFFF;SbV]RS hc[ >O`aS\ RSa Ab`W\Ua c[ RS\ XSeSWZWUS\ ^`W[WbWdS\ Bg^ RO`Oca hc S`hScUS\ ÎQd]V id\ ?a^VaP\\ :^]eTac
Ò\RS`\ AWS ROa >`]U`O[[ a] OP ROaa RS` BcaX]V W\ SW\S\ SW\TOQVS\ U[^PcBg^ c[ USeO\RSZb eW`R
!$
(( merker2.doc
Stand: 22.12.2005 13:39:00 ))
$ $ Ch_D\fP]S[d]V ifXbRWT] TX]UPRWT] d]S ATUTaT]ich_T]
;»bd]Vbe^abRW[PV
class KonvertMethod04 { public static void main(String[] args) String str = "153E5"; float zahl = Float.parseFloat(str); System.out.println(zahl); } }
{
IdbP\\T]UPbbd]V >`W\hW^WSZZ Wab PSW[ /`PSWbS\ [Wb DO`WOPZS\ RS` d][ >`]U`O[[WS`S` W\ RS` 2SYZO`ObW ]\ TSabUSZSUbS 2ObS\bg^ ab`S\U SW\hcVOZbS\ 2WSa eW`R d][ 1][^WZS` ºPS`^`ºTb c\R aWQVS`USabSZZb >`W\hW^WSZZ Yr\\S\ HceSWac\US\ ]RS` >O`O[SbS`ºPS`UOPS\ \c` Rc`QV USTºV`b eS`RS\ eS\\ RWS 2ObS\bg^S\ SfOYb ºPS`SW\abW[[S\ AbW[[S\ 2ObS\bg^ d]\ AS\RS` c\R 3[^TÉ\US` \WQVb ºPS`SW\ a] YO\\ W\ PSabW[[bS\ 4ÉZZS\ SW\S Ocb] [ObWaQVS 2ObS\bg^/\^Oaac\U S`T]ZUS\ 2Oa USaQVWSVb OPS` \c` eS\\ RWS 9]\dS`aW ]\ ]V\S 5STOV`S\ d]\ 7\T]`[ObW]\adS`Zcab ]RS` TÉZaQVc\U [rUZWQV Wab C\R ROTº` UWPb Sa ab`S\US @SUSZ\( •
PSW SW\TOQVS\ Bg^S\( C[eO\RZc\U \c` d]\ YZSW\ \OQV U`]z
•
PSW @STS`S\hbg^S\( C[eO\RZc\U \c` d]\ a^ShWSZZ OcT OZZUS[SW\
2WSaS ab`S\US Bg^WaWS`c\U W\ 8OdO YO\\ OZZS`RW\Ua [Wb SW\WUS\ A^`OQV[WbbSZ\ OcTUS eSWQVb eS`RS\ A] UWPb Sa RS\ Bg^1Oab RO[Wb YO\\ RS` >`]U`O[[WS`S` ROa 1OabW\U Rc`QV Sf^ZWhWbS /\UOPS SW\S C[W\bS`^`SbObW]\ SW\Sa 2ObS\eS`bSa S`heW\US\ 7\ RS\ [SWabS\ 4ÉZZS\ eW`R Sa aWQV ROPSW c[ SW\aQV`É\YS\RS Phe a^ShWOZWaWS`S\RS 9]\dS` aW]\S\ VO\RSZ\ ESWZ Sa ROPSW hc @c\BW[S4SVZS`\ Y][[S\ YO\\ eW`R R`W\US\R S[^T]VZS\ RO[Wb d]`aWQVbWU c[hcUSVS\ c\R d]` RWSaS` /`b RS` C[eO\RZc\U X\\Ta SW\S Bg^^`ºTc\U d]`hc\SV[S\ [Wb X]bcP]RT^U 2WS DS`O\be]`bc\U ZWSUb OZZSW\ PSW[ >`]U`O[[WS`S` RS` 1][^WZS` YO\\ RO\\ \WQVb [SV` VSZTS\ 2SaeSUS\ [caa ab`S\U c\bS`aQVWSRS\ eS`RS\ heWaQVS\ W[^ZWhWbS` Bg^Y]\dS`aW]\ RWS Ocb][ObWaQV S`T]ZUb eSWZ aWS ^`]P ZS[Z]a Wab c\R RS[ Sf^ZWhWbS\ 1OabW\U PSW RS[ RS` >`]U`O[[WS`S` W\ 9OcT \W[[b ROaa 2ObS\ dS`TÉZaQVb eS`RS\ Yr\\S\ 2O`ºPS` VW\Oca UWPb Sa a^ShWSZZS ;SbV]RS\ eS\\ heWaQVS\ SW\TOQVS\ Bg^S\ c\R Ab`W\U]PXSYbS\ Y]\dS`bWS`b eS`RS\ a]ZZ 3W\S PSa]\RS`S /`b RS` C[eO\RZc\U Wab ROa /cb]0]fW\U Phe /cb]C\P]fW\U 2O` c\bS` dS`abSVb [O\ RWS Ocb][ObWaQVS C[eO\RZc\U SW\Sa ^`W[WbWdS\ Bg^a W\ SW\S\ @STS`S\hbg^ Phe ROa /ca^OQYS\ SW\Sa =PXSYba W\ SW\S\ 0OaWabg^
!$
(( merker2.doc
Stand: 22.12.2005 13:39:00 ))
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!$
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Stand: 22.12.2005 13:39:00 ))
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!$!
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Stand: 22.12.2005 13:39:00 ))
% <^SXUXTa aXRWcXV TX]bTciT] PRRTbb R^]ca^[
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// Membervariable
// lokale Variable
// Fehler, lokale V.
{
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(( merker2.doc
Stand: 22.12.2005 13:39:00 ))
% " FT[RWT] 0]UP]VbfTac WPQT] SXT EPaXPQ[T].
3W\S 0Sa]\RS`VSWb W[ :SPS\ SW\S` DO`WOPZS\ Wab SW\S AWbcObW]\ e] aWS bS[^]`É` dS` RSQYb eW`R d]\ SW\S` O\RS`S\ UZSWQV\O[WUS\ DO`WOPZS\ B`]bhRS[ YO\\ aWS O\US a^`]QVS\ c\R dS`O`PSWbSb eS`RS\ ?a^VaP\\ BWPS^f ) ÎQTaSTRZT] TX]Ta EPaXPQ[T] class Shadow01 { static int z1 = 100; // Member-V. public static void main(String[] a) { int z1 = 2; // Lokale V. System.out.println(z1); } } ÎQd]V id\ ?a^VaP\\ BWPS^f ÎQd]V ( 0WbbS ºPS`ZSUS\ AWS eWS W\ RS` \PX];SbV]RS OcT RWS ;S[PS`dO`WOPZS i hcUSU`WTTS\ eS`RS\ YO\\ c\R bSabS\ AWS RWS :rac\U :rac\UaVW\eSWa( 2O Sa aWQV c[ SW\S bcPcXRDO`WOPZS VO\RSZb eW`R aWS _cOZWTWhWS`b [Wb RS[ 9ZOaaS\\O[S\ ÎQd]V !) 0WbbS ^`ºTS\ AWS Rc`QV >`]U`O[[É\RS`c\U ]P RS`aSZPS
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!$#
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Stand: 22.12.2005 13:39:00 ))
% <^SXUXTa aXRWcXV TX]bTciT] PRRTbb R^]ca^[
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D]\ RWSaS` U`c\RaÉbhZWQVS\ @SUSZ hc[ 7\WbWOZWaWS`S\ UWPb Sa XSR]QV SW\S /ca\OV[S( :]YOZS DO`WOPZS\ eS`RS\ \WQVb Ocb][ObWaQV W\WbWOZWaWS`b ROa Wab /cTUOPS RSa >`] U`O[[WS`S`a 2WSa Wab OcQV aW\\d]ZZ c[ TSVZS`VOTbS D]`PSZSUc\US\ hc dS`[SWRS\ RS\\ Z]YOZS DO`WOPZS\ eS`RS\ VÉcTWU bS[^]`É` OZa HeWaQVS\a^SWQVS` PS\rbWUb ?a^VaP\\ 8]Xc !) ;^ZP[T EPaXPQ[T] \¶bbT] _Ta 7P]S X]XcXP[XbXTac fTaST] public class Init02 { public static void main(String[] args) { String str; System.out.println(str); } } ÎQd]V id\ ?a^VaP\\ 8]Xc ! 2Oa >`]U`O[[ YO\\ \WQVb TSVZS`T`SW c[USeO\RSZb eS`RS\ 9]``WUWS`S\ AWS RWSaS\ 4SVZS`
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2KHKTYJG[KX\UTRUQGRKT
/[ SW\TOQVabS\ Wab RWSaS 4`OUS PSW Z]YOZS\ DO`WOPZS\ hc PSO\be]`bS\( :]YOZS DO`WOP ZS\ eS`RS\ W[ /`PSWbaa^SWQVS` O\USZSUb eS\\ SW\S 2SYZO`ObW]\aO\eSWac\U OcaUS TºV`b eW`R ;SbV]RS\^O`O[SbS` PSZSUS\ A^SWQVS`^ZObh a]POZR RWS ;SbV]RS OcTUS`c TS\ eW`R 2O\OQV YO\\ XSRS /\eSWac\U W\\S`VOZP RWSaSa 0Z]QYa Phe RS` ;SbV]RS RO`OcT hcU`SWTS\ 2WS 3fWabS\h RS` DO`WOPZS\ S\RSb eS\\ RS` 0Z]QY ]RS` RWS ;SbV] RS W\ RS` aWS RSYZO`WS`b e]`RS\ Wab dS`ZOaaS\ eW`R ?a^VaP\\ ;^ZP[ ) ETabdRW TX]T [^ZP[T EPaXPQ[T ]PRW 4]ST STa ;TQT]bSPd Ta PdbidVTQT] public class Lokal01 { public static void main(String[] a) { for (int i = 0; i< 3; i++) { System.out.println(i); } System.out.println(i); } } !$$
(( merker2.doc
Stand: 22.12.2005 13:39:00 ))
% # ;TQT]bSPdTa e^] EPaXPQ[T]
ÎQd]V id\ ?a^VaP\\ ;^ZP[ 2Oa >`]U`O[[ YO\\ \WQVb TSVZS`T`SW c[USeO\RSZb eS`RS\ 0WbbS PSVSPS\ AWS RS\ 4SVZS` ;»bd]Vbe^abRW[PV public class Lokal02 { public static void main(String[] a) { int i; for (i = 0; i< 3; i++) { System.out.println(i); } System.out.println(i); } } 2WS :SPS\aROcS` d]\ ;SbV]RS\^O`O[SbS`\ ÉV\SZb RS` d]\ Z]YOZS\ >O`O[SbS`\ /cQV aWS SfWabWS`S\ \c` Tº` Yc`hS HSWb AWS eS`RS\ W[ 9]^T RS` ;SbV]RS RSYZO`WS`b c\R aW\R \c` W\\S`VOZP RS` ;SbV]RS aWQVbPO`
public class MethodParm01 { public static void main(String[] a) { MethodParm01 m = new MethodParm01(); m.methodA(17); // System.out.println(zahl); // existiert nicht mehr! } void methodA(int zahl) { System.out.println(zahl++); } } 7[ >`]U`O[[ O`O[SbS` d]\ RS` ;SbV]RS \TcW^S0 RSYZO`WS`b 2S` DS`acQV d]\ OczS`VOZP RWSaS` ;SbV]RS OcT RWS DO`WOPZS iPW[ hchcU`SWTS\ TºV`b hc SW\S[ C[eO\RZc\UaTSVZS` 2SaeSUS\ Wab RWS HSWZS # OZa 9][[S\bO` USaQV`WSPS\ e]`RS\ ÎQd]V id\ ?a^VaP\\ `]U`O[[ a] ROaa RS` USeº\aQVbS 3TTSYb S`hWSZb eW`R :r ac\UaVW\eSWa( 2S` ES`b RSa >O`O[SbS`a [caa OZa 3`USP\Wa d]\ RS` OcTUS`cTS\S\ ;S bV]RS hc`ºQYUSUSPS\ eS`RS\ c\R PSW[ /cT`cT S[^TO\US\ eS`RS\ !$%
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Stand: 22.12.2005 13:39:00 ))
% <^SXUXTa aXRWcXV TX]bTciT] PRRTbb R^]ca^[
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class Static01 { static int zahl; static String text; } class StaticTest01 { public static void main(String[] a) { System.out.println(Static01.zahl + Static01.text); } } ÎQd]V id\ ?a^VaP\\ BcPcXRCTbc 0WbbS YZÉ`S\ AWS Rc`QV >`]U`O[[É\RS`c\U RWS 4`OUS ]P RWS \PX];SbV]RS OcQV W\ \S`VOZP RS` 9ZOaaS BcPcXR abSVS\ Yr\\bS EWS É\RS`b aWQV RO\\ RWS /`b RS` /R`Sa aWS`c\U d]\ iPW[ c\R cTgc. !$&
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Stand: 22.12.2005 13:39:00 ))
% # ;TQT]bSPdTa e^] EPaXPQ[T]
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class Instanz01 { int zahl; String text; Instanz01() {}; Instanz01(int z, String t) { zahl = z; text = t; } } class InstanzTest01 { public static void main(String[] a) { Instanz01 instanz1 = new Instanz01(17,"ABC"); Instanz01 instanz2 = new Instanz01(25,"XYZ"); System.out.println(instanz1.zahl + instanz1.text); } } 2WS C[eO\RZc\UaSW\VSWb ?cSZZbSfbRObSW [caa 8]bcP]iCTbc YPeP VSWzS\ 3W\ BSab RSa >`]U`O[[a RS[]\ab`WS`b ROaa SW\ AObh ;S[PS`dO`WOPZS\ ^`] =PXSYb O\USZSUb eW`R /czS`RS[ hSWUb Sa eWS RWS SW\hSZ\S\ DO`WOPZS\ `STS`S\hWS`b eS`RS\ ÎQd]V id\ ?a^VaP\\ 8]bcP]iCTbc 0WbbS É\RS`\ AWS ROa >`]U`O[[ a] ROaa RWS S`abS 7\abO\h RWS ES`bS "%# c\R 0SW a^WSZbSfb S\bVÉZb c\R Tº` RWS heSWbS 7\abO\h RS` 2STOcZb9]\ab`cYb]` OcTUS`cTS\ eW`R
!$'
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Stand: 22.12.2005 13:39:00 ))
% <^SXUXTa aXRWcXV TX]bTciT] PRRTbb R^]ca^[
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(( merker2.doc
Stand: 22.12.2005 13:39:00 ))
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class Zugriff01 { int zahl1; void setZahl1(int z3) { zahl1 = z3; } void ausgeben() { System.out.println(zahl1); } }
// Nicht private!
public class ZugriffTest01 { public static void main(String[] a) { Zugriff01 z01 = new Zugriff01(); z01.setZahl1(15); z01.ausgeben(); System.out.println(z01.zahl1); // Direktaufruf } } 2WS ;S[PS`dO`WOPZS iPW[ Wab SW\ 3ZS[S\b RS` 9ZOaaS IdVaXUU AWS Wab ]XRWc Oca R`ºQYZWQV OZa _aXePcT RSYZO`WS`b 2SaeSUS\ UWZb RWS AbO\RO`R`SUSZ( 8SRS O\RS`S 9ZOaaS W\ RWSaS[ >OYSb YO\\ OcT RWSaSa 3ZS[S\b hcU`SWTS\ c\R Sa OcQV dS`É\RS`\ 2S` HcU`WTT S`T]ZUb O\RS`a OZa W\\S`VOZP SW\S` 9ZOaaS \c\ _cOZWTWhWS`b R V [Wb 6WZTS RSa >c\Yb=^S`Ob]`a X]bcP]i]P\T UT[S]P\T ÎQd]VT] id\ ?a^VaP\\ IdVaXUU ÎQd]V ( 1]RWS`S\ AWS Tº` RWS ;S[PS`dO`WOPZS iPW[ RS\ HcU`WTTa[]RWTWS` _aXePcT ROa S \WQVb dS`USaaS\ RS\\ _aXePcT Wab YSW\ RScbaQVSa E]`b DS`acQVS\ AWS SW\S C[eO\RZc\U RS` C[eO\RZc\UaSW\VSWb IdVaXUUCTbc YPeP 3`USP\Wa( Sa eW`R SW\ C[eO\RZc\UaTSVZS` OcaUSUSPS\ :raQVS\ AWS RO\OQV RS\ ;]RWTWS` _aXePcT eWSRS` ÎQd]V !( 3`UÉ\hS\ AWS RWS 9ZOaaS IdVaXUUCTbc c[ T]ZUS\RS /cTUOPS( 3a a]ZZ SW\S heSWbS 7\abO\h i ! RS` 9ZOaaS IdVaXUU S`hScUb eS`RS\ 2WS ;S[PS`dO`WOPZS iPW[ a]ZZ RS\ ES`b % PSY][[S\ 2O\OQV a]ZZ RWS ;SbV]RS _aX]c[] OcTUS`cTS\ eS`RS\ RWS RW`SYb RWS ;S[PS`dO`WOPZS iPW[ `STS`S\hWS`b OZZS`RW\Ua Tº` RWS 7\abO\h i ! 2WSaS ÍPc\U VOb c O UShSWUb ROaa d]\ RS` AbO\RO`R`SUSZ Tº` ROa HcU`WTTa`SQVb OP USeWQVS\ eS`RS\ YO\\ W\RS[ a] US\O\\bS HcU`WTTa[]RWTWS` h 0 _aXePcT PS\cbhb eS`RS\ 0Sd]` eW` XSR]QV RSbOWZZWS`b RWS SW\hSZ\S\ AQVZºaaSZer`bS` Tº` RWS HcU`WTTa`SQVbS PS a^`SQVS\ [ºaaS\ eW` RWS 4`OUS YZÉ`S\ eOa c\bS` SW\S[ >OYSb hc dS`abSVS\ Wab c\R eSZQVS @]ZZS SW\ >OQYOUS Tº` ROa HcU`WTTa`SQVb a^WSZb !%
(( merker2.doc
Stand: 22.12.2005 13:39:00 ))
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(( merker2.doc
Stand: 22.12.2005 13:39:00 ))
% % 1TSTdcd]V STa ?PRZPVT=P\T]
?a^VaP\\ IdVaXUU !) 0aQTXcT] \Xc ?PRZPVT]P\T] package merker; class Zugriff02 { int zahl1; void setZahl1(int z3) { zahl1 = z3; } void ausgeben() { System.out.println(zahl1); } } 2c`QV RWS >OQYOUSO\UOPS W\ RS` S`abS\ HSWZS RWSaS` 2ObSW eW`R RWS 9ZOaaS hc[ 0S abO\RbSWZ SW\Sa >OYSba \É[ZWQV hc[ 3ZS[S\b RSa >OYSba \TaZTa 2S` >OQYOUS`]U`O[[ IdVaXUU ! [Wb RS[ /cT `cT RSa 1][^WZS`a Oca RWSaS` 1][[O\RZW\S c[ c\R \WQVb Oca SW\S` 3\beWQYZc\Ua c[USPc\U ÍPS`^`ºTS\ AWS W\ eSZQVS[ =`R\S` aWQV RWS S`hScUbS 1ZOaaRObSW [Wb RS[ 0gbSQ]RS PSTW\RSb A^SWQVS`\ AWS RWS \OQVT]ZUS\RS 2ObSW W\ RS` @]]b2W`SQb]`g RSa =`R\S`a \TaZTa OP OZa] \WQVb W\ RS[aSZPS\ =`R\S` eWS RWS 1ZOaa2ObSW IdVaXUU ! YPeP a]\RS`\ W\ RS[ ºPS`US]`R\SbS\ 4]ZRS` ?a^VaP\\ IdVaXUUCTbc !) 1T]dciT] STa :[PbbT TX]Tb ?PZTcb import merker.*; public class ZugriffTest02 { public static void main(String[] a) { Zugriff02 z1 = new Zugriff02(); z1.setZahl1(15); z1.ausgeben(); } } 2c`QV RWS /\UOPS W\ RS` S`abS\ HSWZS RWSaS` 2ObSW YO\\ RWSaSa >`]U`O[[ OcT RWS 1ZOaa4WZS \TaZTa IdVaXUU ! hcU`SWTS\ ]V\S W[[S` eWSRS` RS\ >OQYOUS\O[S\ [Wb O\hcUSPS\ /ZbS`\ObWd YO\\ RWSaS /\UOPS OcQV S\bTOZZS\ RO\\ [ºaabS RWS 3`hSc Uc\U RS` 7\abO\h W\ RS` dWS`bS\ HSWZS ZOcbS\( merker.Zugriff02 z1 = new merker.Zugriff02();
!%!
(( merker2.doc
Stand: 22.12.2005 13:39:00 ))
% <^SXUXTa aXRWcXV TX]bTciT] PRRTbb R^]ca^[
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public class PackageList02 { public static void main(String[] a) { java.lang.Package[] all = java.lang.Package.getPackages(); for (int i=0; i
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(( merker2.doc
Stand: 22.12.2005 13:39:00 ))
% & IdVaXUUb\^SXUXTa _aXePcT _dQ[XR _a^cTRcTS
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(( merker2.doc
Stand: 22.12.2005 13:39:00 ))
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IdVaXUUb\^SXUXTa d]S SPb X]U^a\PcX^] WXSX]V 3a UWZb OZa]( ES\\ RS` >`]U`O[[WS`S` \WQVba O\RS`Sa OcaR`ºQYZWQV PSabW[[b RO\\ YO\\ SW\S DO`WOPZS d]\ OZZS\ >`]U`O[[S\ RWSaSa >OYSba dS`É\RS`b eS`RS\ R V aWS Wab \WQVb USaQVºbhb d]` RS[ HcU`WTT Oca O\RS`S\ 9ZOaaS\ 2WSa S\ba^`WQVb \WQVb RS` 7RSS RS` 2ObS\YO^aSZc\U c\R RWS 3[^TSVZc\U Wab RSaVOZP ;S[PS`dO`WOPZS\ [Wb RS[ AQVZºaaSZe]`b _aXePcT hc RSYZO`WS`S\ RO[Wb RS` HcU`WTT a] SW\USU`S\hb eW`R ROaa d]\ OczS`VOZP RS` SWUS\S\ 9ZOaaS YSW\ RW`SYbSa :SaS\ c\R YSW\ RW`SYbSa DS`É\ RS`\ C^RObS [rUZWQV Wab ?a^VaP\\ ?aXePcT ) ?aXePc STbfTVT] IdVaXUU eTaQ^cT] class Private01 { private int zahl; } class PrivateTest01 { public static void main(String[] a) { Private01 p1 = new Private01(); System.out.println(p1.zahl); // illegal } } 3W\ HcU`WTT OcT RWS ^`WdObS\ ;S[PS`dO`WOPZS\ Wab W\ a]ZQVS\ 4ÉZZS\ \c` W\RW`SYb [rU ZWQV Rc`QV ASbbS` c\R 5SbbS`;SbV]RS\ 2WSa S\ba^`WQVb RS` S[^T]VZS\S\ D]`US VS\aeSWaS ES\\ SW\S 3W\aQV`É\Yc\U OZa _aXePcTDO`WOPZS \WQVb [rUZWQV Wab a] a]ZZbS US^`ºTb eS`RS\ ]P RWS DO`WOPZS [Wb RS[ ;]RWTWS` _a^cTRcTS USYS\\hSWQV\Sb eS`RS\ YO\\ 2WSa VOb hc` 4]ZUS ROaa \c` d]\ OPUSZSWbSbS\ 9ZOaaS\ hcUSU`WTTS\ eS`RS\ YO\\ RS` HcU`WTT PZSWPb W\\S`VOZP RS` DS`eO\RbaQVOTb ?a^VaP\\ ?a^cTRcTS ) IdVaXUU ]da U¶a ETafP]ScT d]S X]]TaWP[Q STb ?P ZTcb
class Protected01 { protected int zahl; } class ProtectedTest01 { public static void main(String[] a) { Protected01 p1 = new Protected01(); System.out.println(p1.zahl); // legal } } ÎQd]V id\ ?a^VaP\\ ?a^cTRcTSCTbc ÎQd]V ( EO\RSZ\ AWS ROa >`]U`O[[ c[ c\R bSabS\ AWS Sa A]e]VZ RWS C[eO\R Zc\U OZa OcQV RWS /caTºV`c\U aW\R ]V\S >`]PZS[S [rUZWQV
(( merker2.doc
Stand: 22.12.2005 13:39:00 ))
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@[MXOLLYSUJOLOKXLX1RGYYKT
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public class PublicTest01 { public static void main(String[] a) { Public01 p = new Public01(); } } public class Public01 { private int zahl1; void setZahl1(int z3) { zahl1 = z3; !%%
(( merker2.doc
Stand: 22.12.2005 13:39:00 ))
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(( merker2.doc
Stand: 22.12.2005 13:39:00 ))
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(( merker2.doc
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(( merker2.doc
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(( merker2.doc
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(( merker2.doc
Stand: 22.12.2005 13:39:00 ))
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(( merker2.doc
Stand: 22.12.2005 13:39:00 ))
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(( merker2.doc
Stand: 22.12.2005 13:39:00 ))
1
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BNF-Beispiel - Variablendeklaration: VariableDeclarators: VariableDeclarator { ,
VariableDeclarator }
VariableDeclarator: Identifier VariableDeclaratorRest VariableDeclaratorRest: BracketsOpt [ =
VariableInitializer]
Kurzbeschreibung für Control-Statements: if (Expression) Statement [else Statement] for ( ForInitOpt
;
[Expression] ; ForUpdateOpt ) Statement
while (Expression) Statement do Statement while (Expression)
;
Ausführliche Beschreibung (Switch): switch (Expression) { SwitchBlockStatementGroups } SwitchBlockStatementGroups: { SwitchBlockStatementGroup } SwitchBlockStatementGroup: SwitchLabel BlockStatements SwitchLabel: case ConstantExpression : default: BlockStatements: { BlockStatement } BlockStatement : LocalVariableDeclarationStatement ClassOrInterfaceDeclaration [Identifier :] Statement
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(( merker2.doc
Stand: 22.12.2005 13:39:00 ))
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(( merker2.doc
Stand: 22.12.2005 13:39:00 ))
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@ A B C D E F G H I J K L M N O P Q R S T U V W X Y Z [ \ ] ^ _
COMMERCIAL AT LATIN CAPITAL LETTER LATIN CAPITAL LETTER LATIN CAPITAL LETTER LATIN CAPITAL LETTER LATIN CAPITAL LETTER LATIN CAPITAL LETTER LATIN CAPITAL LETTER LATIN CAPITAL LETTER LATIN CAPITAL LETTER LATIN CAPITAL LETTER LATIN CAPITAL LETTER LATIN CAPITAL LETTER LATIN CAPITAL LETTER LATIN CAPITAL LETTER LATIN CAPITAL LETTER LATIN CAPITAL LETTER LATIN CAPITAL LETTER LATIN CAPITAL LETTER LATIN CAPITAL LETTER LATIN CAPITAL LETTER LATIN CAPITAL LETTER LATIN CAPITAL LETTER LATIN CAPITAL LETTER LATIN CAPITAL LETTER LATIN CAPITAL LETTER LATIN CAPITAL LETTER LEFT SQUARE BRACKET REVERSE SOLIDUS RIGHT SQUARE BRACKET CIRCUMFLEX ACCENT LOW LINE
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(( merker2.doc
Stand: 22.12.2005 13:39:00 ))
2
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(( merker2.doc
Stand: 22.12.2005 13:39:00 ))
2 3XT TabcT] !$% D]XR^STITXRWT] UUUU
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129 130
0x0081 0x0082
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131 132
0x0083 0x0084
133 134
2? !$!
2? '$
EW\R]ea
2 = A
80
80
Ç
81
ü
€
82
‚
82
é
NO BREAK HERE* *
83
ƒ
83
â
84
„
84
ä
0x0085 0x0086
NEXT LINE (NEL)* START OF SELECTED AREA*
85
…
85
à
86
†
86
å
135 136
0x0087 0x0088
END OF SELECTED AREA* TABULATION SET*
87
‡
87
ç
88
ˆ
88
ê
137
0x0089
TABULATION WITH JUST.*
89
‰
89
ë
138 139
0x008A 0x008B
LINE TABULATION SET* PARTIAL LINE FORWARD*
8A
Š
8A
è
8B
‹
8B
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140 141
0x008C 0x008D
PARTIAL LINE BACKWARD* REVERSE LINE FEED*
8C
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8C
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142 143
0x008E 0x008F
SINGLE SHIFT TWO* SINGLE SHIFT THREE*
8E
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144 145
0x0090 0x0091
DEVICE CONTROL STRING* PRIVATE USE ONE*
91
146 147
0x0092 0x0093
PRIVATE USE TWO* SET TRANSMIT STATE*
92
148 149
0x0094 0x0095
150 151
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90
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91
æ
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92
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93
“
93
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CANCEL CHARACTER* MESSAGE WAITING*
94
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94
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95
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0x0096 0x0097
START OF GUARDED AREA* END OF GUARDED AREA*
96
–
96
û
97
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97
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152
0x0098
START OF STRING*
98
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98
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153 154
0x0099 0x009A
* SINGLE CHARACTER INTR.*
99
™
99
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155 156 157 158
0x009B 0x009C 0x009D 0x009E
CONTROL SEQUENCE INTR.* STRING TERMINATOR* OPERATING SYSTEM CM* PRIVACY MESSAGE*
9A 9B
š ›
9A 9B
Ü ø
9C
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9C
£
9D
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159
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(( merker2.doc
Stand: 22.12.2005 13:39:00 ))
2
3XT TabcT] !$% D]XR^STITXRWT] UUUU
1]RS ^]W\b RSh 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191
VSfO RSh 0x00A0 0x00A1 0x00A2 0x00A3 0x00A4 0x00A5 0x00A6 0x00A7 0x00A8 0x00A9 0x00AA 0x00AB 0x00AC 0x00AD 0x00AE 0x00AF 0x00B0 0x00B1 0x00B2 0x00B3 0x00B4 0x00B5 0x00B6 0x00B7 0x00B8 0x00B9 0x00BA 0x00BB 0x00BC 0x00BD 0x00BE 0x00BF
Ag[ P]Z D]XR^ST
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NO-BREAK SPACE INVERTED EXCLAM. MARK CENT SIGN POUND SIGN CURRENCY SIGN YEN SIGN BROKEN BAR SECTION SIGN DIAERESIS COPYRIGHT SIGN FEMININE ORDINAL INDICATOR LEFT-POINTING DOUBLE ANGLE NOT SIGN SOFT HYPHEN REGISTERED SIGN MACRON DEGREE SIGN PLUS-MINUS SIGN SUPERSCRIPT TWO SUPERSCRIPT THREE ACUTE ACCENT MICRO SIGN PILCROW SIGN MIDDLE DOT CEDILLA SUPERSCRIPT ONE MASCULINE ORDINAL INDICATOR RIGHT-POINTING DOUBLE ANGLE ONE QUARTER ONE HALF THREE QUARTERS INVERTED QUESTION MARK
2? !$!
2? '$
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2 = A
A0 A1 A2 A3 A4 A5 A6 A7 A8 A9 AA AB AC AD AE AF B0 B1 B2 B3 B4 B5 B6 B7 B8 B9 BA BB BC BD BE BF
A0 A1 A2 A3 A4 A5 A6 A7 A8 A9 AA AB AC AD AE AF B0 B1 B2 B3 B4 B5 B6 B7 B8 B9 BA BB BC BD BE BF
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á í ó ú ñ Ñ ª º ¿ ® ¬ ½ ¼ ¡ « » ų Ŵ ŵ Ň ō Á  À © Ť Œ Ř Ş ¢ ¥ ʼn
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(( merker2.doc
Stand: 22.12.2005 13:39:00 ))
2 3XT TabcT] !$% D]XR^STITXRWT] UUUU
1]RS ^]W\b RShW[ 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223
VSfO RSh
Ag[ P]Z D]XR^ST
0x00C0 0x00C1 0x00C2 0x00C3 0x00C4 0x00C5 0x00C6 0x00C7 0x00C8 0x00C9 0x00CA 0x00CB 0x00CC 0x00CD 0x00CE 0x00CF 0x00D0 0x00D1 0x00D2 0x00D3 0x00D4 0x00D5 0x00D6 0x00D7 0x00D8 0x00D9 0x00DA 0x00DB 0x00DC 0x00DD 0x00DE 0x00DF
À Á Â Ã Ä Å Æ Ç È É Ê Ë Ì Í Î Ï Ð Ñ Ò Ó Ô Õ Ö × Ø Ù Ú Û Ü Ý Þ ß
A WITH GRAVE A WITH ACUTE A WITH CIRCUMFLEX A WITH TILDE A WITH DIAERESIS A WITH RING ABOVE LETTER AE C WITH CEDILLA E WITH GRAVE E WITH ACUTE E WITH CIRCUMFLEX WITH DIAERESIS I WITH GRAVE I WITH ACUTE I WITH CIRCUMFLEX I WITH DIAERESIS LETTER ETH N WITH TILDE O WITH GRAVE O WITH ACUTE O WITH CIRCUMFLEX O WITH TILDE O WITH DIAERESIS MULTIPLICATION SIGN O WITH STROKE U WITH GRAVE U WITH ACUTE U WITH CIRCUMFLEX U WITH DIAERESIS Y WITH ACUTE LETTER THORN SMALL LETTER SHARP S
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C0 C1 C2 C3 C4 C5 C6 C7 C8 C9 CA CB CC CD CE CF D0 D1 D2 D3 D4 D5 D6 D7 D8 D9 DA DB DC DD DE DF
C0 C1 C2 C3 C4 C5 C6 C7 C8 C9 CA CB CC CD CE CF D0 D1 D2 D3 D4 D5 D6 D7 D8 D9 DA DB DC DD DE DF
À Á Â Ã Ä Å Æ Ç È É Ê Ë Ì Í Î Ï Ð Ñ Ò Ó Ô Õ Ö × Ø Ù Ú Û Ü Ý Þ ß
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(( merker2.doc
Stand: 22.12.2005 13:39:00 ))
Ŋ ŏ Ŏ Ō ņ Ő ã Ã ś ŕ Ū ŧ š ő ŭ ¤ ð Ð Ê Ë È ı Í Î Ï ŋ ň Ű ů ¦ Ì Ů
2
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1]RS ^]W\b RShW[ 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255
VSfO RSh 0x00E0 0x00E1 0x00E2 0x00E3 0x00E4 0x00E5 0x00E6 0x00E7 0x00E8 0x00E9 0x00EA 0x00EB 0x00EC 0x00ED 0x00EE 0x00EF 0x00F0 0x00F1 0x00F2 0x00F3 0x00F4 0x00F5 0x00F6 0x00F7 0x00F8 0x00F9 0x00FA 0x00FB 0x00FC 0x00FD 0x00FE 0x00FF
Ag[ P]Z D]XR^ST
a WITH GRAVE a WITH ACUTE a WITH CIRCUMFLEX a WITH TILDE a WITH DIAERESIS a WITH RING ABOVE LETTER AE c WITH CEDILLA e WITH GRAVE e WITH ACUTE e WITH CIRCUMFLEX e WITH DIAERESIS i WITH GRAVE i WITH ACUTE i WITH CIRCUMFLEX i WITH DIAERESIS LETTER ETH n WITH TILDE o WITH GRAVE o WITH ACUTE o WITH CIRCUMFLEX o WITH TILDE o WITH DIAERESIS DIVISION SIGN o WITH STROKE u WITH GRAVE u WITH ACUTE u WITH CIRCUMFLEX u WITH DIAERESIS y WITH ACUTE LETTER THORN y WITH DIAERESIS
2? !$!
2? '$
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2 = A
E0 E1 E2 E3 E4 E5 E6 E7 E8 E9 EA EB EC ED EE EF F0 F1 F2 F3 F4 F5 F6 F7 F8 F9 FA FB FC FD FE FF
E0 E1 E2 E3 E4 E5 E6 E7 E8 E9 EA EB EC ED EE EF F0 F1 F2 F3 F4 F5 F6 F7 F8 F9 FA FB FC FD FE FF
à á â ã ä å æ ç è é ê ë ì í î ï ð ñ ò ó ô õ ö ÷ ø ù ú û ü ý þ ÿ
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(( merker2.doc
Stand: 22.12.2005 13:39:00 ))
3 :^\_[TccQTXb_XT[ TX]Ta eTacTX[cT] 0__[XRPcX^]
*
1USVRKZZHKOYVOKRKOTKX\KXZKORZKT'VVROIGZOUT
2Oa 9O^WbSZ $ ! Ab`SO[a S\bVÉZb T]ZUS\RSa 0SWa^WSZ^`]U`O[[ hc[ AQV`SWPS\ c\R :SaS\ ºPS` SW\S B1> 7>:SWbc\U ?a^VaP\\ BcaTP\ #) BTaeTa U¶a :^\\d]XZPcX^] ¶QTa C2? 8?ETaQX]Sd]V import java.net.*; import java.io.*; class Stream04 { public static void main(String[] args) throws Exception ServerSocket ss = new ServerSocket(1500); Socket s = ss.accept();
{
DataInputStream ein = new DataInputStream(s.getInputStream()); int zahl = ein.read(); System.out.println(zahl); } } Hc[ drZZWUS\ DS`abÉ\R\Wa aW\R SW\WUS 9S\\b\WaaS RSa B1> 7>>`]b]Y]ZZa S`T]`RS`ZWQV 2Oa >`]U`O[[ S`eO`bSb ºPS` RWS >]`b<` # SW\ HSWQVS\ ROa USZSaS\ c\R RO\OQV O[ 1]\a]ZSPWZRaQVW`[ OcaUSUSPS\ eW`R 6WS` Wab ROa S\ba^`SQVS\RS AS\RS`^`] U`O[[ ?a^VaP\\ BcaTP\ #P) 2[XT]c U¶a :^\\d]XZPcX^] ¶QTa C2? 8?ETaQX]Sd]V import java.net.*; import java.io.*; class Stream04a { public static void main(String[] args) throws Exception { Socket s = new Socket("localhost",1500); DataOutputStream aus = new DataOutputStream(s.getOutputStream()); aus.write('A'); aus.close(); } } !'"
3 :^\_[TccQTXb_XT[ TX]Ta eTacTX[cT] 0__[XRPcX^]
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2Oa 3`USP\Wa RS` ec\RS`d]ZZS\ HcaO[[S\O`PSWb RWSaS` PSWRS\ >`]U`O[[S Wab ROaa OcT RS[ 1]\a]ZSPWZRaQVW`[ RSa AS`dS`^`]U`O[[a RS` 1]RS^]W\b RSa 0cQVabOPS\a / OcaUSUSPS\ eW`R ÎQd]V id\ ?a^VaP\\ BcaTP\ # ÎQd]V ( Ò\RS`\ AWS ROa >`]U`O[[ a] ROaa \WQVb RS` 1]RS^]W\b $# a]\RS`\ RS` 0cQVabOPS / d][ AS`dS`^`]U`O[[ OcaUSUSPS\ eW`R ^`W\bZ\RWPahOVZ) ÎQd]V !) Ò\RS`\ AWS RWS PSWRS\ 9][[c\WYObW]\a^`]U`O[[S a] OP ROaa \WQVb SW\ hSZ\S HSWQVS\ USaS\RSb c\R USZSaS\ eS`RS\ a]\RS`\ Y][^ZSbbS HSWQVS\YSbbS\ Ab`W\Ua [Wb RS\ ;SbV]RS\ e`WbSCB4 c\R `SORCB4 OcaUSbOcaQVb eS`RS\ ;»bd]Vbe^abRW[PV import java.net.*; import java.io.*; class Stream05 { public static void main(String[] args) throws Exception { ServerSocket ss = new ServerSocket(1500); Socket s = ss.accept(); DataInputStream ein = new DataInputStream(s.getInputStream()); String text = ein.readUTF(); System.out.println(text); } } import java.net.*; import java.io.*; class Stream05a { public static void main(String[] args) throws Exception { Socket s = new Socket("localhost",1500); DataOutputStream aus = new DataOutputStream(s.getOutputStream()); aus.writeUTF("Hallo"); aus.close(); } }
!'#
(( merker2.doc
Stand: 22.12.2005 13:39:00 ))
4 6[^bbPa
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(( merker2.doc
Stand: 22.12.2005 13:39:00 ))
4 6[^bbPa
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