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Repaint JTree

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Hello,
I've a program with a JTree with JLayeredPane. During program execution I add a JPanel over the JTree on an higher layer.
In this situation, when I change the content of JLabels over the JPanel, the JTree were repainted for corrisponding rows under the JLabel changed.

How can I disable un-necessary repaint of JTree?

EDIT: If I set JPanel to be opaque, the JTree isn't repainted, as I want; but I want to obtain the same behaviour with transparent JPanel..
Sep 28 '11 #1
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