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我想将我的跳棋程序从Eclipse导出到可运行jar文件中。我得到一个jar文件,但它不运行......它给我关于没有找到的类的神秘错误消息。它不是包含所需的所有类的jar文件的重点吗?我不知道现在该做什么。可运行jar文件无法运行
这里就是我得到的,当我运行jar:
D:\Dokumente\workspace>java -jar Dame.jar
Exception in thread "main" java.lang.NoClassDefFoundError: [[Lcheckers/Board$EmptySquare;
at checkers.Board.<init>(Board.java:63)
at checkers.Board.<init>(Board.java:49)
at checkers.GameUI.main(GameUI.java:105)
Caused by: java.lang.ClassNotFoundException: checkers.Board$EmptySquare
at java.net.URLClassLoader$1.run(Unknown Source)
at java.net.URLClassLoader$1.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
... 3 more
也许它有助于知道EmptySquare
是一个内部类的Board
? 可能是什么问题?我在导出向导中尝试了“提取所需的库”和“包需要的库”。
我也尝试过使用jar
在命令行,但它并没有正常工作。下面是我所做的:
D:\Dokumente\workspace\Dame\bin\checkers>jar cvfe Dame.jar checkers.GameUI *.class
D:\Dokumente\workspace\Dame\bin\checkers>java -jar Dame.jar
Fehler: Hauptklasse checkers.GameUI.class konnte nicht gefunden oder geladen werden
(error: main class checkers.GameUI.class could not be found or loaded)
如果我离开了主类(GameUI
)软件包的名称,它也不起作用:
D:\Dokumente\workspace\Dame\bin\checkers>jar cvfe Dame.jar GameUI *.class
D:\Dokumente\workspace\Dame\bin\checkers>java -jar Dame.jar
Exception in thread "main" java.lang.NoClassDefFoundError: GameUI (wrong name: checkers/GameUI)
at java.lang.ClassLoader.defineClass1(Native Method)
at java.lang.ClassLoader.defineClass(Unknown Source)
at java.security.SecureClassLoader.defineClass(Unknown Source)
at java.net.URLClassLoader.defineClass(Unknown Source)
at java.net.URLClassLoader.access$100(Unknown Source)
at java.net.URLClassLoader$1.run(Unknown Source)
at java.net.URLClassLoader$1.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at sun.launcher.LauncherHelper.checkAndLoadMain(Unknown Source)
毫无头绪。
的JAR文件的内容是:
D:\Dokumente\workspace\Dame\bin\checkers>jar tvf Dame.jar
0 Thu Jan 09 01:05:26 CET 2014 META-INF/
88 Thu Jan 09 01:05:26 CET 2014 META-INF/MANIFEST.MF
994 Thu Jan 09 00:14:30 CET 2014 Board$1.class
1840 Thu Jan 09 00:14:30 CET 2014 Board$EmptySquare.class
447 Thu Jan 09 00:14:30 CET 2014 Board$GamePiece.class
4051 Thu Jan 09 00:14:30 CET 2014 Board$Piece.class
4399 Thu Jan 09 00:14:30 CET 2014 Board$Queen.class
8381 Thu Jan 09 00:14:30 CET 2014 Board.class
2946 Thu Jan 09 00:14:30 CET 2014 Checkers.class
2708 Thu Jan 09 00:14:30 CET 2014 CheckersAB.class
4202 Thu Jan 09 00:14:30 CET 2014 CheckersABT.class
2464 Thu Jan 09 00:14:30 CET 2014 CheckersMinMax.class
1324 Thu Jan 09 00:14:30 CET 2014 CheckersPieces.class
951 Thu Jan 09 00:14:30 CET 2014 GameState.class
804 Thu Jan 09 00:14:30 CET 2014 GameUI$1.class
663 Thu Jan 09 00:14:30 CET 2014 GameUI$2.class
2535 Thu Jan 09 00:14:30 CET 2014 GameUI.class
739 Thu Jan 09 00:14:30 CET 2014 GUIBoard$1.class
6069 Thu Jan 09 00:14:30 CET 2014 GUIBoard.class
3776 Thu Jan 09 00:14:30 CET 2014 Move.class
607 Thu Jan 09 00:14:30 CET 2014 MoveComparator.class
610 Thu Jan 09 00:14:30 CET 2014 NodeVal.class
1078 Thu Jan 09 00:14:30 CET 2014 PlayCheckersAB.class
356 Thu Jan 09 00:14:30 CET 2014 PlayCheckersABT.class
357 Thu Jan 09 00:14:30 CET 2014 PlayCheckersMM.class
2466 Thu Jan 09 00:14:30 CET 2014 PlayTournament.class
1183 Thu Jan 09 00:14:30 CET 2014 Square.class
241 Thu Jan 09 00:14:30 CET 2014 ZeroSumGame.class
所有类都在同一个包中?你用'main()'方法有多个类吗? –
@ pm77:刚更新了帖子。所有类都在packacke“跳棋”中,当然除了一些libs(apache commons)。有一个主要方法的类文件不止一个,但我告诉Eclipse哪一个是正确的。我也用jar命令试了一下。没有运气。 – jackthehipster
显示您的JAR的[清单](http://docs.oracle.com/javase/tutorial/deployment/jar/manifestindex.html)。 –