Debugging a BC4J applet running in Netscape

I am trying to debug a problem that I have running an applet containing BC4J components in a Netscape browser (v4.7). When I run the applet, it aborts with an error in oracle.jbo.mom.DefinitionManager.initJNDIContext() (line 1021 in the java file).
Where can I get the source code for classes under oracle.jbo.mom ? and, where can I get doc on initJNDIContext() ?
Thanks,
Murali.

Sathish,
Thank you for your reply.
I am using Oracle 9i Jdeveloper Version 9.0.2.829.
Looks like it is erroring while it is invoking CreateApplicationObject. So, it has already loaded the applet. So, I think the issue is not signing the jar file (I might be wrong!). Here is the error:
oracle.jbo.PersistenceException: JBO-26024: An error occurred while creating InitialContext
     at oracle.jbo.mom.DefinitionManager.initJNDIContext(DefinitionManager.java:1021)
     at oracle.jbo.mom.DefinitionManager.initManager(DefinitionManager.java:127)
     at oracle.jbo.uicli.mom.JUMetaObjectManager.<init>(JUMetaObjectManager.java:50)
     at oracle.jbo.uicli.mom.JUMetaObjectManager.getJUMom(JUMetaObjectManager.java:124)
     at oracle.jbo.uicli.mom.JUMetaObjectManager.createPool(JUMetaObjectManager.java:393)
     at oracle.jbo.uicli.mom.JUMetaObjectManager.createApplicationObjec (JUMetaObjectManager.java:327)
     at mil.dfas.dcm.AppletDCM1_04.init(AppletDCM1_04.java:108)
     at mil.dfas.dcm.AppletDCM1_04.main(AppletDCM1_04.java:450)
     at mil.dfas.dcm.AppletLaunchDCM.init(AppletLaunchDCM.java:27)
     at sun.applet.AppletPanel.run(Unknown Source)
     at java.lang.Thread.run(Unknown Source)
It is not the complete stack trace. But, will give an idea.
So, the code for DefinitionManager is not shipped.. Is there any way I could get the code?
I appreciate your help. Please let me know if you can figure out what the problem could be. By the way, it works fine with Netscape 7.0. The problem is with Netscape 4.7.
Thanks,
Murali.

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