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Article #650

Re: null pointer while changing L & F

#650
From: Lori M Olson [TeamB]
Date: Sat, 16 Apr 2005 15:39
42 lines
2495 bytes
GEORGE wrote:

> I am using the code below to change the look and feel of my app using 3 
> radio buttons for Metal, Motif and Windows.
> 
> The L & F changes alright.  But I get a null pointer exception along the 
> way.  The stack trace is also shown below but I am unable to make much of 
> it.  Any help would be appreciated.
> 
> TIA
> George
> 

What leads you to believe that piece of code is responsible?  It's not 
part of the stack trace?  Is it that the problem goes away if you 
comment out that code or something like that?

I suspect that your code is simply exposing an different, underlying 
problem.  Reading stack traces of Swing bugs is usually a thankless 
task.  I really hate finding NPE's in the JDK.  If you run in the 
debugger, you can click on those line numbers and go directly to the 
line on which the NPE happened.  Looks like something needed a preferred 
size to be set, and it was not.  But that's just a wild guess.

-- 

Regards,

Lori Olson [TeamB]

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Date: Sat, 16 Apr 2005 09:39:27 -0600
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