How is the component containing "mainPanel" constructed? Can you show that (without any of the code behind the constructs, but simply what components are in it and how they get placed in it).
Java Programmer and Sun Systems Administrator
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Debugging is twice as hard as writing the code in the first place. Therefore, if you write the code as cleverly as possible, you are, by definition, not smart enough to debug it.
--Brian Kernighan