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Article View: borland.public.jbuilder.java.swing
Article #535

Re: Design window turning red (now NullPointer)

#535
From: Magnus
Date: Tue, 07 Jun 2005 03:39
44 lines
2619 bytes
I found my problem
I declared some Icons like:

ImageIcon redIcon, yellowIcon, greenIcon;

After some hours making a backup and deleting part after part it turned 
out the I have to declare it as:

     ImageIcon redIcon;
     ImageIcon yellowIcon;
     ImageIcon greenIcon;

The program worked but the designer was corrupt. Now I know!

Magnus wrote:
> I got rid of all read beans :)
> 
> Now I have a "java.lang.NullPointerException" :(
> 
> I have gone back to an older version without this problem and compared 
> the constructors without any luck. I commented out 99.9% of the 
> constructor and jbinit but still no luck.
> 
> The only message jBuilder2005 gives me is as above. No rows, or fields 
> or methods or anything to work on.
> 
> Anyone who have any tips on how to find the problem? Can the problem be 
> in the order of declarations?
> 
> Magnus wrote:
> 
>> Superthanks for your input. Some of it I understand and some of it I 
>> don't.
>> I have followed multiple tutorials and and implemented to fit my need.
>>
>> This is what I have:
>> An application where using a tree to display what is in the DB and 
>> used for selection (that then triggers actions). A tree is used in a 
>> couple of different screens. The tree is only to show values and 
>> enable easy navigation and selection.
>>
>> My tree implementation:
>>
> [cut]
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Date: Mon, 06 Jun 2005 23:39:44 -0400
From: Magnus <magnus_bjorkman@iwon.com>
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Subject: Re: Design window turning red  (now NullPointer)
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