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why I can't open the old java file on the run-time workbench? [message #200889]

Fri, 28 October 2005 02:00

Eclipse User

When I tried to open the java files that I built before on the run-time
wokbench,the compiler found mistake:Unhandled event loop exception
Reason:
java.lang.NullPointerException
Unhandled event loop exception
Reason:
Failed to execute runnable
(java.lang.NullPointerException)
***SWT nested exeception
Reason:
java.lang.NullPoinerException
I can not find the reason.Why???

Re: why I can't open the old java file on the run-time workbench? [message #200904 is a reply to message #200889]

Fri, 28 October 2005 04:45

Eclipse User

Originally posted by: ingo.koch[nospam].sap.com

Providing so less information, we can?t either :-)

"zlc" <257wheat@sohu.com> wrote in message
news:efe13e910e3d2487d0d12c9dd872a2e0$1@www.eclipse.org...
> When I tried to open the java files that I built before on the run-time
> wokbench,the compiler found mistake:Unhandled event loop exception
> Reason:
> java.lang.NullPointerException
> Unhandled event loop exception
> Reason:
> Failed to execute runnable
> (java.lang.NullPointerException)
> ***SWT nested exeception
> Reason:
> java.lang.NullPoinerException
> I can not find the reason.Why???
>

Re: why I can't open the old java file on the run-time workbench? [message #201045 is a reply to message #200889]

Fri, 28 October 2005 14:36

Eclipse User

zlc wrote:
> When I tried to open the java files that I built before on the run-time
> wokbench,the compiler found mistake:Unhandled event loop exception
> Reason:
> java.lang.NullPointerException
> Unhandled event loop exception
> Reason:
> Failed to execute runnable
> (java.lang.NullPointerException)
> ***SWT nested exeception
> Reason:
> java.lang.NullPoinerException
> I can not find the reason.Why???
>
try debugging.

you could set for example a breakpoint in your main class and then step
through until u see where the NPE is thrown.

regards
Astrid

Re: why I can't open the old java file on the run-time workbench? [message #201600 is a reply to message #200889]

Tue, 01 November 2005 21:41

Eclipse User

Thanks for your help.:)
I have found the reason:something I forgot to save into the XML file.So
NPE occured.

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