Topic: 已配classpath Exception in thread "main" java.lang.NoClassDefFoundError:

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1.已配classpath Exception in thread "main" java.lang.NoClassDefFoundError: Copy to clipboard
Posted by: doraemon
Posted on: 2004-07-23 14:36

新手
在用java application学helloworld时碰到
环境变量止设了class .;d:\jdk1.3.1\lib;
没设path,执行时在d:\jdk1.3\bin中直接执行
javac.exe HelloWordlApp.java 可以正常编译
但java HelloWorldApp 却报错：Exception in thread "main" java.lang.NoClassDefFoundError: e:\doraemon\java\javaexercise\HelloWorldApp
2.Re:Exception in thread "main" java.lang.NoClassDefFoundError: [Re: doraemon] Copy to clipboard
Posted by: doraemon
Posted on: 2004-07-23 14:38

再问一句，ie支持jdk1.4.2吗
3.Re:已配classpath Exception in thread "main" java.lang.NoClassDefFoundError: [Re: doraemon] Copy to clipboard
Posted by: SnakeX
Posted on: 2004-07-25 14:47

application? 那就不能在DOS下输出了啊~ 用IDE开发环境玩吧~
4.Re:已配classpath Exception in thread "main" java.lang.NoClassDefFoundError: [Re: doraemon] Copy to clipboard
Posted by: gj595
Posted on: 2004-07-29 17:36

请配置CLASSPATH后可使用
5.Re:已配classpath Exception in thread "main" java.lang.NoClassDefFoundError: [Re: doraemon] Copy to clipboard
Posted by: breezehou
Posted on: 2004-07-30 16:16

对，CLASSPATH没设置，不时class。
6.Re:已配classpath Exception in thread "main" java.lang.NoClassDefFoundError: [Re: doraemon] Copy to clipboard
Posted by: railgunman
Posted on: 2004-08-01 11:53

呵呵……终于找到问题的答案了
7.Re:已配classpath Exception in thread "main" java.lang.NoClassDefFoundError: [Re: doraemon] Copy to clipboard
Posted by: haoyue
Posted on: 2004-08-01 15:00

我的做法是设置Adminsitrator的用户变量(U)：

1。JAVA_HOME=c:\j2sdk1.4.2-05
2。PATH=%JAVA_HOME%\bin;%PATH%
3。CLASSPATH=.;%JAVA_HOME%\lib

楼主的问题主要是忘记了添加Classpath中的".;"
"."表示的是当前目录
8.Re:已配classpath Exception in thread "main" java.lang.NoClassDefFoundError: [Re: doraemon] Copy to clipboard
Posted by: railgunman
Posted on: 2004-08-04 18:21

谢谢楼上，我的问题才真正得到解决！
不过，我还是有点不明白为什么按前面的解决办法不行，而设了这三个变量后就行了呢？

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