Topic: 还是老问题 (NoClassDefFoundError, package Jvava.io does not exist)

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1.还是老问题 (NoClassDefFoundError, package Jvava.io does not exist) Copy to clipboard
Posted by: liujing319
Posted on: 2005-01-28 10:44

在执行java Hello 时候还是出现下面的错误!
Exception in the thread"main"java.lang.NoClassDefFoundError:Hello
不知道还哪有毛病?
还有就是,如果我在前面加import Jvava.io.*;
语句时候,出现package Jvava.io does not exist


1. do a search on keyword "NoClassDefFoundError"
2. import java.io.*

2.Re:还是老问题 (NoClassDefFoundError, package Jvava.io does not exist) [Re: liujing319] Copy to clipboard
Posted by: kay
Posted on: 2005-02-01 14:17

我和你的问题一样
希望能一同进步

3.Re:还是老问题 (NoClassDefFoundError, package Jvava.io does not exist) [Re: liujing319] Copy to clipboard
Posted by: kay
Posted on: 2005-02-01 14:19

我的电脑上按的是jdk1.3.1_15

在dos中执行javac时 可以把java文件编译成class文件

但在执行java是却出现了错误

我的文件路径名是F:\kay.class
命令过程是这样的

F:\>java kay

Exception in thread "main" java.lang.NoClassDefFoundError:kay

我的文件源代码是

public class kay
{
  public static void main(String[] args)
  {
    System.out.println("Kay");
  }
}

我的jdk1.3.1_15的路径是
c:\jdk1.3.1_15

我设的环境变量是

path=c:\jdk1.3.1_15\bin

java_home=c:\jdk1.3.1_15

classpath=c:\jdk1.3.1_15\lib\dt.jar;c:\jdk1.3.1_15\lib\tools.jar

小弟弄了两天
中途成功了两次,但我不知道成功的原因

后来又不行了,我照样不知道原因
我的OS是XP home pack 1
我非常困惑邦托你帮忙

4.Re:还是老问题 (NoClassDefFoundError, package Jvava.io does not exist) [Re: liujing319] Copy to clipboard
Posted by: simbas
Posted on: 2005-02-01 22:17

把classpath=c:\jdk1.3.1_15\lib\dt.jar;c:\jdk1.3.1_15\lib\tools.jar
改成classpath=.;c:\jdk1.3.1_15\lib\dt.jar;c:\jdk1.3.1_15\lib\tools.jar

5.Re:还是老问题 (NoClassDefFoundError, package Jvava.io does not exist) [Re: liujing319] Copy to clipboard
Posted by: 鸡肋男
Posted on: 2005-02-02 09:51

在classpath中少加了一个点号,现在的人怎么都这么不仔细啊??

6.Re:还是老问题 (NoClassDefFoundError, package Jvava.io does not exist) [Re: liujing319] Copy to clipboard
Posted by: heart5
Posted on: 2005-02-02 10:53

懂了才会仔细啊

7.Re:还是老问题 (NoClassDefFoundError, package Jvava.io does not exist) [Re: kay] Copy to clipboard
Posted by: liujing319
Posted on: 2005-02-06 15:43

问题已经解决
新手嘛!
懂了才能仔细嘛


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