Blinking in JFrame Java

Question

Hello guys I am doing a thread to update a ball over JFrame so I repaint the screen... and then paint the ball update its position .. and then draw the screen again ... draw

Answer 1

If you access GUI components outside the EDT (Event Dispatch Thread) then you might encounter strange problems, Contrary if you perform long running tasks in the EDT then also you will get problems.

Check this post for more info on GUI Threading in Java