[Lu_wenhui]

Dear Sir,
when I want to use the common way for double buffering. It does not work. Could you tell me the way to make it possible in personal java.
here is the way I tried.

class xxx extends Canvas
{
private Image offset;
.....
public xxx()
{
Image save = createImage(500,160);
.....
}

paint(Graphics g)
{
Graphics save_g = save.getGraphics();
......
g.drawImage(save,0,0,this);
}
.....
}
Actually, before getGraphics(); everything is fine.
could you tell me why???
thank you

regards
Wenhui LU