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Topic: 编译通过了，但无法运行，java.lang.NoClassDefFoundError，求助

1.编译通过了，但无法运行，java.lang.NoClassDefFoundError，求助

Posted by: like_angel
Posted on: 2005-10-08 14:20

class Lesson22
{
  public static void main(String args[])
  {
    int x;
    try
    {
    x =System.in.read();
   }catch(Exception e){}
    while(x !='q')
    {
      System.out.println((char)x);
      try
      {
     x =System.in.read();
  }catch(Exception e){}
  }
  }
}
运行后出现错误：
Exception in thread "main" java.lang.NoClassDefFoundError: lesson22 (wrong name:
Lesson22)
谢谢大家帮忙了

2.Re:帮我解决一下问题谢谢了(variable x might not have been initialized) [Re: like_angel]	Copy to clipboard
Posted by: why Posted on: 2005-10-08 19:59 > variable x might not have been initialized Then initialize x, i.e. int x = 0; > 运行后出现错误 That is compiling, not 运行.

3.Re:编译通过了，但无法运行，java.lang.NoClassDefFoundError，求助 [Re: like_angel]	Copy to clipboard
Posted by: like_angel Posted on: 2005-10-09 10:41 谢谢，我马上重新发

4.Re:编译通过了，但无法运行，java.lang.NoClassDefFoundError，求助 [Re: like_angel]	Copy to clipboard
Posted by: why Posted on: 2005-10-09 12:19 NoClassDefFoundError: lesson22 do a search with keyword NoClassDefFoundError http://www.cjsdn.net/post/search name your java file Lesson22.java, it has to match the class name.

5.Re:编译通过了，但无法运行，java.lang.NoClassDefFoundError，求助 [Re: like_angel]	Copy to clipboard
Posted by: tqm Posted on: 2005-10-09 13:38 把x定义为类变量就ok了

6.Re:编译通过了，但无法运行，java.lang.NoClassDefFoundError，求助 [Re: like_angel]	Copy to clipboard
Posted by: waitray Posted on: 2005-10-13 00:02 是不是你的classpath没设置好？我copy你的程序，除了X要初始化以外，在Eclipse下运行得了哦...而且文件名可以任意取在命令行 G:\JAVA>java Lesson22下面也可以运行呀我想会不会是你的classpath没设置好？