JPanel motion

**batyuska87** · March 8th, 2011, 05:09 AM

Hi!

I'm working on a simple application where is an JFrame, and 2 JPanels on it.
I would like to write an simple motion with these JPanels. I implemented a simple version, but there is some flickering on the screen. How could I solve it?
Here is my code:

Jpanel c3 = new JPanel();
Graphics g = this.getGraphics();
c3.setLocation(30, 30);
for(int i=0;i<100;i++)
{
c3.setLocation(130 + i, 30);
this.update(g); //this is currently the JFrame.update
try
{
Thread.sleep(10);
}
catch(InterruptedException e)
{
e.printStackTrace();
}
}

Please help me...

**KevinWorkman** · March 8th, 2011, 09:26 AM

You're going to have to define "motion". And what thread is that sleep on? It looks like it's on the EDT, which is pretty horrible. But you also don't want to do GUI updates on a thread that isn't the EDT. So I suggest you look into using a Swing Timer.

**KevinWorkman** · March 8th, 2011, 01:00 PM

But it seems I was wasting my time trying to help you anyway, as you've already received the same advice somewhere else:
This thread has been cross posted here:

http://www.java-forums.org/new-java/40161-jpanel-motion.html

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