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Exception in thread "main" java.lang.NoClassDefFoundError: DataServer
   at gnu.java.lang.MainThread.run(libgcj.so.7rh)
Caused by: java.lang.ClassNotFoundException: DataServer not found in gnu.gcj.runtime.SystemClassLoader{urls=[file:./,file:/root/test/jar/dom4j-1.6.1.jar,file:/root/test/jar/jaxen-1.1-beta-6.jar,file:/root/test/jar/log4j-1.2.15.jar], parent=gnu.gcj.runtime.ExtensionClassLoader{urls=[], parent=null}}
   at java.net.URLClassLoader.findClass(libgcj.so.7rh)
   at gnu.gcj.runtime.SystemClassLoader.findClass(libgcj.so.7rh)
   at java.lang.ClassLoader.loadClass(libgcj.so.7rh)
   at java.lang.ClassLoader.loadClass(libgcj.so.7rh)
   at gnu.java.lang.MainThread.run(libgcj.so.7rh)
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-bash-3.00$ pwd
/home/a/u/wuqingping/testpro
-bash-3.00$ more HelloWorld.java
public class HelloWorld
{
        public static void main(String args[]) throws Exception
        {


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