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JTree won't expand

 
Greenhorn
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Hello,
I have a JTree that will not expand when the expansion handles are clicked. Has anyone seen anything like this?
 
Bartender
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"JimH" -

Welcome to the JavaRanch! Please adjust your displayed name to meet the
JavaRanch Naming Policy.
You can change it here.

As to the question... could you post any relevant code? Such as special renderers, etc you are using on the tree...

Thanks! and welcome to the JavaRanch!
 
Consider Paul's rocket mass heater.
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