Repainting several JPanels simultaneously give me straneg graphics.

[zappsweden]

I have several JPanels that repaints from time to time and when they repaint simultaneously the contents of one JPanel can intrude in the top left corner of another JPanel. Why?

[swpalmer]

I've seen things like that before.  It appears as if Swing is caching images and they are being reused improperly.  I suspect it may be related to threading issues.  How are you doing the repaints? How many threads are involved?

[Ask_Hjorth_Larsen]

Make sure that all components that override paintComponent call super.paintComponent first. Forgetting this can cause something like what you described.