Need Ur Help - EJB Experts :)

[Muhammad Asif]

Hi All,
I am studying Richard-Manson's EJB Book. Developing the Container MAnaged bean in chapter 4, I have got stuck into a number of problems.
This one is probably the last one.
I am using J2EE Reference implementation and the database being used is Oracle.
When I try to deploy the EJB, and after passing all the steps of the Wizard and clicking the Finish, The deploy tool shows some activity and then gives this error.
There was a deployment error:
java.rmi.ServerException: Remote eXception occurred in server thread;nested exception is java.rmi.RemoteException:Error processing ejb jar, compilation failed
Please refer to:
<JAVA_HOME>/logs/<machine-name>/j2ee/j2ee/error.log
for more information please verify your application with verifier tool.
Now when I open the verifier tool, the first time i find there are no errors.
But when i open the referred file, I see that it contains the following exception.
Compilation Failed
at com.sun.ejb.GeneratorDriver.compileClasses(GeneratorDriver.java)
at com.sun.codegen.GeneratorDriver.Driver.predeploy

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I guess i have thoroughly explained the problem, Now I want the help from you Ranchers.
Regards
Asif Abbasi