Hello, I am facing a problem while debugging in eclipse. I keep getting pop-up Exception processing async thread queue java.lang.NullPointerException
Does anyone know what the exact problem is?
Thanks Yogesh
A:
What version of Eclipse are you using? What are you debugging, a simple Java SE application?
Tamás Mezei
2009-11-11 16:22:01
I am using Eclipse 3.4.2 , well it's not a simple, but a complex Java SE application.
yogsma
2009-11-11 17:07:19
You might try updating, sometimes Eclipse has rough points, this clearly seems to be an internal Eclipe problem. There was a similar bug in 2005, the debugger failed to compile some debug expressions. You might want to change them or select other debugging options.Any more details you can share?
Tamás Mezei
2009-11-11 17:49:49
Thanks Tamas, I have automatic updates for eclipse, so it was not issue with that at least.
yogsma
2009-11-11 19:12:00
A:
Well, it sounds like the problem is either from trying to dereference a null pointer, or there's a timing problem related to use of multiple threads.
Can you provide any more information beyond the error window text?
Matt Ball
2009-11-11 16:25:53
MattI am pasting the information which I see in details of that window"Exception processing async thread queue Exception processing async thread queue java.lang.NullPointerException Exception processing async thread queue java.lang.NullPointerException Exception processing async thread queue java.lang.NullPointerException"
yogsma
2009-11-11 17:08:50
Okay, that's not really what I was asking about. It would be much easier to diagnose the problem with, for example, the conditions that cause the problem, or the code that causes the problem, or at least some basic information about /what/ you're debugging (as Tamas asked).
Matt Ball
2009-11-11 17:47:46
Also, can you run the same code (not debugging) successfully, or does it throw a NullPointerException as well?
Matt Ball
2009-11-11 17:48:47
MattThanks, I solved the problem. It was issue with the expressions I was evaluating all the time. I was not removing old expressions which I was watching earlier. I removed all expressions and it worked fine.
yogsma
2009-11-11 19:09:48
+4
A:
The problem was with the expressions watching while debugging. If those old expressions are not removed, it just keeps evaluating them and since they don't exist for current program, they keep throwing null pointer exception.
yogsma
2009-11-11 19:11:01
A:
thanks yogsma... i was getting the same exception and i removed all the old expressions from Expressions window and it is working fine now
syam
2009-12-17 05:56:20
A:
I had the same error but after following on of the solution in thread i managed to fix the error. I removed the expression list, i was watching, and debugged again. it worked fine. Thanks
manglesh
2010-01-22 10:09:41
A:
hai here i have a problem with progressbar when i change the status of the bar in tha programe it doest not raect immmediatly..but after finishing my process it suddenly complete 100% and says finshed.how to slove it
Ajay
2010-08-11 05:23:00