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NullPointerException in JBoss debug mode [message #484251] Fri, 04 September 2009 19:06
Eclipse User
Originally posted by: bselu42.googlemail.com

Hi,

I'm a bit desperate about the following problem. If I start my JBoss from
Eclipse normally, everything goes fine. If I stat it in debug mode though,
I get the following error message:

'JDI Event Dispatch' has encountered a problem.

An internal error occured during "JDI Event Dispatch".
java.lang.NullPointerException

See also: http://bselu.dyndns.org/JdiEventDispatchNPE.png

In the Error Log I find the corresponding StackTrace:
java.lang.NullPointerException
at
org.eclipse.jdt.internal.debug.core.breakpoints.JavaBreakpoi nt.installableReferenceType(JavaBreakpoint.java:373)
at
org.eclipse.jdt.internal.debug.core.breakpoints.JavaBreakpoi nt.handleClassPrepareEvent(JavaBreakpoint.java:331)
at
org.eclipse.jdt.internal.debug.core.breakpoints.JavaBreakpoi nt.handleEvent(JavaBreakpoint.java:271)
at
org.eclipse.jdt.internal.debug.core.EventDispatcher.dispatch (EventDispatcher.java:155)
at
org.eclipse.jdt.internal.debug.core.EventDispatcher.access$0 (EventDispatcher.java:104)
at
org.eclipse.jdt.internal.debug.core.EventDispatcher$1.run(Ev entDispatcher.java:250)
at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55)

I have a fresh Eclipse 3.5 installed including JBoss Tools 3.1.0M. The
JBoss in use is 4.2.3.GA, but I also tried it with a 5.1.0.GA with the
same outcome. So I guess this is not the point. Furthermore I can
definitely start JBoss in debug mode from the command line. But I cannot
do it from Eclipse (it worked in the past).

Please make some light!

Best regard, Ecke
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