"java.lang.NoClassDefFoundError "Error message

Could someone please me out with regards to the below shown error messages? I successfully compiled a java program called "HelloWorld.java" but got the error messages below when i tried to run/execute the java program in question. How could i rectify this problem? I look forward to hearing from anyone wishing to help.
java.lang.NoClassDefFoundError: HelloWorld
Exception in thread "main"

Hi,
I also encounter this problem. Can u pls guide me cos i'm don't really understand how u all solve the problem. What Should i change in the classpath... ThankS! Pls help

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         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
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            at com.bea.util.jam.provider.JamServiceFactoryImpl.createSourceBuilder(JamServiceFactoryImpl.java:205)
            at com.bea.util.jam.provider.JamServiceFactoryImpl.createBuilder(JamServiceFactoryImpl.java:158)
            at com.bea.util.jam.provider.JamServiceFactoryImpl.createClassLoader(JamServiceFactoryImpl.java:137)
            at com.bea.util.jam.provider.JamServiceFactoryImpl.createService(JamServiceFactoryImpl.java:78)
            at weblogic.wsee.util.JamUtil.parseSource(JamUtil.java:152)
            at weblogic.wsee.tools.anttasks.JwsLoader.loadJClasses(JwsLoader.java:186)
            at weblogic.wsee.tools.anttasks.JwsLoader.load(JwsLoader.java:75)
            at weblogic.wsee.tools.anttasks.JwsModule.loadWebServices(JwsModule.java:569)
            at weblogic.wsee.tools.anttasks.JwsModule.generate(JwsModule.java:369)
            at weblogic.wsee.tools.anttasks.JwsModule.build(JwsModule.java:256)
            at weblogic.wsee.tools.anttasks.JwscTask.execute(JwscTask.java:184)
            at org.apache.tools.ant.UnknownElement.execute(UnknownElement.java:288)
            at sun.reflect.GeneratedMethodAccessor1.invoke(Unknown Source)
            at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
            at java.lang.reflect.Method.invoke(Method.java:601)
            at org.apache.tools.ant.dispatch.DispatchUtils.execute(DispatchUtils.java:106)
            at org.apache.tools.ant.Task.perform(Task.java:348)
            at org.apache.tools.ant.Target.execute(Target.java:357)
            at org.apache.tools.ant.Target.performTasks(Target.java:385)
            at org.apache.tools.ant.Project.executeSortedTargets(Project.java:1337)
            at org.apache.tools.ant.Project.executeTarget(Project.java:1306)
            at org.apache.tools.ant.helper.DefaultExecutor.executeTargets(DefaultExecutor.java:41)
            at org.apache.tools.ant.Project.executeTargets(Project.java:1189)
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    Eclipse Installation details:
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    sun.lang.ClassLoader.allowArraySyntax=true
    sun.management.compiler=HotSpot 64-Bit Tiered Compilers
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    run this one in command prompt and then convert the applet using converter tool
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    D:\NareshPalle\jcardRE\Smart\src>java -classpath %_CLASSES% com.sun.javacard.con
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    6:0x07:0x08 1.0
    or
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    For more doubts mail me....
    *[removed by moderator]*
    Thanks and Regards
    NareshPalle
    Edited by: EJP on 31/03/2012 20:09: removed your email address. Unless you like spam and unless you think these forums are provided for your personal benefit only, posting an email address here serves no useful purpose whatsoever.

  • On starting WebLogic getting Error : Listening for transport dt_socket at address: 8453 Exception in thread "main" java.lang.NoClassDefFoundError: vXmx512m

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