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JTable: updating cells programitcally  RSS feed

 
Peter Simard
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2 of the columns in my JTable hold monetary values ( double).
If the value in cell A changes, then value B should be updated with the result of a calculation performed using the new value in A and the old value in B.
Sort of like a spreadsheet.
I can't seem to set the new value of A for use in a simple calculation.

At present my code is as follows:
[edited to remove those evil tab characters -ds ]
[ October 18, 2002: Message edited by: Dirk Schreckmann ]
 
Bill Liteplo
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I haven't tried your code, but I think there are more conventional ways to solve your problem that are [BOLD]much[/BOLD] simpler.
something like this:


Basic idea:
1. there is some data that are stored in your cache object
2. there is a GUI object (e.g. JTable) that is the interface, but does not store the data
3. you use a model (e.g. TableModel) to control the data and interface between the data cache and the view
I'm sure other people could list numerous resources on this Design Pattern.
Bill
 
It is sorta covered in the JavaRanch Style Guide.
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