Problem clearing applet's screen for different images

Question

I have an applet that displays several jpg-images.
Images are photos of different sizes that are portrait
and landscape.
Problem is that the rest of a portrait image remains at
the screen when a landscape image is dispayed and
in the same way the rest of a landscape image remains
at the screen when a portrait image is displayed.
I thought update and repaint methods should do the
work but something is wrong.
Code that should do it is:
private void runWork() {
   curFrame = 0;
   try {
        while(noStopRequested) {
     waitWhilePaused();
     curFrame = (curFrame + 1) % image.length;
     repaint();
     Thread.sleep(5000);
   } catch (InterruptedException e) {
         Thread.currentThread().interrupt();
public void paint(Graphics g) {
    update(g);
public void update(Graphics g) {
   g.drawImage(image[curFrame], 0, 0, this);
}What am I doing wrong?
Thanks in advance

Answer 1

Yeah, I knew flickering would probably happen. I've never done double-buffering exactly in an applet, but I can give you an idea how it's done.private void runWork() {
   Image offScreen = createImage(appletWidth, appletHeight);
   Graphics offGraphics = offScreen.getGraphics();
   try {
      while (noStopRequested) {
         waitWhilePaused();
         curFrame = (curFrame + 1) % image.length;
         offScreen.clearRect(0, 0, appletWidth, appletHeight);
         offScreen.drawImage(image[curFrame], 0, 0, this);
         repaint();
   catch (...) {}Then in paint():public void paint(Graphics g) {
   g.drawImage(offScreen, 0, 0, this);
public void update(Graphics g) {
   paint(g);
}Might not be perfect, but it should give you an idea. Basically you want to draw the screen OFF the screen before drawing it to the screen. That way you don't clear the screen and draw the image. You do it all in one paint().
Michael Bishop