VerifyError

Hi
i have a doubt. I use JBoss3.0 & Tomcat 4.0.3.
I get this error when i try to login(first page). Then i need to restart the JBoss. (When i removed the temp directory i didnt get this.) Is there any way to solve this error. This is the error thrown by the JBoss.

What might be the problem?


20:55:21,986 ERROR [LogInterceptor] TransactionRolledbackException, causedBy:
java.lang.VerifyError: Cannot inherit from final class
      at java.lang.ClassLoader.defineClass0(Native Method)
      at java.lang.ClassLoader.defineClass(ClassLoader.java:486)
      at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:111)
      at java.net.URLClassLoader.defineClass(URLClassLoader.java:248)
      at java.net.URLClassLoader.access$100(URLClassLoader.java:56)
      at java.net.URLClassLoader$1.run(URLClassLoader.java:195)
      at java.security.AccessController.doPrivileged(Native Method)
      at java.net.URLClassLoader.findClass(URLClassLoader.java:188)
      at org.jboss.mx.loading.UnifiedClassLoader.findClass(UnifiedClassLoader.java:227)
      at java.lang.ClassLoader.loadClass(ClassLoader.java:297)
      at org.jboss.mx.loading.UnifiedClassLoader.loadClassLocally(UnifiedClassLoader.java:235)
      at org.jboss.mx.loading.UnifiedLoaderRepository.loadClassFromClassLoader(UnifiedLoaderRepository.java:361)
      at org.jboss.mx.loading.UnifiedLoaderRepository.loadClass(UnifiedLoaderRepository.java:140)
      at org.jboss.mx.loading.UnifiedClassLoader.loadClass(UnifiedClassLoader.java:285)
      at java.lang.ClassLoader.loadClass(ClassLoader.java:253)
      at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:313)
      at com.gridnode.pdip.framework.db.DataObject.<init>(DataObject.java:41)
      at com.gridnode.pdip.framework.db.entity.AbstractEntity.<init>(AbstractEntity.java:86)
      at com.gridnode.pdip.base.session.model.SessionAudit.<init>(Unknown Source)
      at com.gridnode.pdip.base.session.facade.ejb.SessionManagerBean.openSession(Unknown Source)
      at java.lang.reflect.Method.invoke(Native Method)
      at org.jboss.ejb.StatelessSessionContainer$ContainerInterceptor.invoke(StatelessSessionContainer.java:664)
      at org.jboss.resource.connectionmanager.CachedConnectionInterceptor.invoke(CachedConnectionInterceptor.java:186)
      at org.jboss.ejb.plugins.StatelessSessionInstanceInterceptor.invoke(StatelessSessionInstanceInterceptor.java:77)
      at org.jboss.ejb.plugins.AbstractTxInterceptor.invokeNext(AbstractTxInterceptor.java:96)
      at org.jboss.ejb.plugins.TxInterceptorCMT.runWithTransactions(TxInterceptorCMT.java:167)
      at org.jboss.ejb.plugins.TxInterceptorCMT.invoke(TxInterceptorCMT.java:61)
      at org.jboss.ejb.plugins.SecurityInterceptor.invoke(SecurityInterceptor.java:129)
      at org.jboss.ejb.plugins.LogInterceptor.invoke(LogInterceptor.java:166)
      at org.jboss.ejb.StatelessSessionContainer.invoke(StatelessSessionContainer.java:313)
      at org.jboss.ejb.Container.invoke(Container.java:705)
      at org.jboss.mx.server.MBeanServerImpl.invoke(MBeanServerImpl.java:491)
      at org.jboss.invocation.local.LocalInvoker.invoke(LocalInvoker.java:98)
      at org.jboss.invocation.InvokerInterceptor.invoke(InvokerInterceptor.java:102)
      at org.jboss.proxy.TransactionInterceptor.invoke(TransactionInterceptor.java:73)
      at org.jboss.proxy.SecurityInterceptor.invoke(SecurityInterceptor.java:76)
      at org.jboss.proxy.ejb.StatelessSessionInterceptor.invoke(StatelessSessionInterceptor.java:111)
      at org.jboss.proxy.ClientContainer.invoke(ClientContainer.java:76)
      at $Proxy250.openSession(Unknown Source)
      at com.gridnode.gridapp.taglib.auth.LoginTag.doStartTag(Unknown Source)
      at org.apache.jsp.postlogin$jsp._jspService(postlogin$jsp.java:65)
      at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:107)
      at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
      at org.apache.jasper.servlet.JspServlet$JspServletWrapper.service(JspServlet.java:201)
      at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:381)
      at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:473)
      at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
      at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:247)
      at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:193)
      at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:243)
      at org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:566)
      at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:472)
      at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:943)
      at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:190)
      at org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:566)
      at org.apache.catalina.valves.CertificatesValve.invoke(CertificatesValve.java:246)
      at org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:564)
      at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:472)
      at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:943)
      at org.apache.catalina.core.StandardContext.invoke(StandardContext.java:2343)
      at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:180)
      at org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:566)
      at org.apache.catalina.valves.ErrorDispatcherValve.invoke(ErrorDispatcherValve.java:170)
      at org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:564)
      at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:170)
      at org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:564)
      at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:468)
      at org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:564)
      at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:472)
      at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:943)
      at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:174)
      at org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:566)
      at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:472)
      at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:943)
      at org.apache.catalina.connector.http.HttpProcessor.process(HttpProcessor.java:1012)
      at org.apache.catalina.connector.http.HttpProcessor.run(HttpProcessor.java:1107)
      at java.lang.Thread.run(Thread.java:484)



vcsrinathAsked:
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TimYatesCommented:
    at com.gridnode.pdip.framework.db.DataObject.<init>(DataObject.java:41)


Somewhere near here, you try to instantiate a class which extends another class which is declared final...

ie:  you have a class called A (for example)

public final class A
{
  public A()
  {
    System.out.println( "I am A" ) ;
  }
}

and then you are trying to create B:

public class B extends A
{
  public B()
  {
    super() ;
    System.out.println( "I am B" ) ;
  }
}

This will fail...as B extends A

and A is FINAL :-/

Hope this helps :-)

TIm
0
vcsrinathAuthor Commented:
Nope.

we have not declared any final class. When we try to clear the temp & restart JBoss, it works.

we r not getting this often but at times we get this error.

Is it the bug of JBoss??

0
TimYatesCommented:
Are you using JBoss 3.0?

Have you got the latest version?

3.0.6

If this is a bug, it should be fixed in there...
0

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vcsrinathAuthor Commented:
No..
i cannot use the latest version of JBoss. I need to use only JBoss3.0

any solution other than this.
0
TimYatesCommented:
You sure you havent extended a final class?

I can't find anything about this on the JBoss mailing lists...

sure you havent extended java.lang.Number or something by mistake?
0
CleanupPingCommented:
vcsrinath:
This old question needs to be finalized -- accept an answer, split points, or get a refund.  For information on your options, please click here-> http:/help/closing.jsp#1 
EXPERTS:
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0
TimYatesCommented:
No comment has been added lately, so it's time to clean up this TA.
I will leave a recommendation in the Cleanup topic area that this question is:

Accept TimYates' comment as answer.

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TimYates
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