Java Applet Excessive Flickering

Question

I'm creating a simple shooting gallery type game. I have create a mouse motion listener and am using to draw an image at the current position of the mouse. This works fine however the image flicker quite a lot when I move the cursor. I have tried several double buffering tutorial however none of these work.

Here is my code

    public class ShootingGallery extends JApplet implements MouseMotionListener {

        //VARIABLES
        int mouseXPos;
        int mouseYPos;
        Image myImage;
        private Image dbImage;
        private Graphics dbg;

        @Override
        public void init() {            
            setSize(800, 600);//SET UP CURSOR IMAGE
            myImage = getImage(getDocumentBase(),"spongebob.gif");
            addMouseMotionListener(this);//ADD ACTION LISTENERS
        }

        @Override
        public void mouseDragged(MouseEvent e) {            
            moveMouse(e); 
        }        

        @Override
        public void mouseMoved(MouseEvent e) {            
            moveMouse(e);
        }        

        public void moveMouse(MouseEvent e){            
              Graphics g = getGraphics();             
              mouseXPos = e.getX() - (myImage.getWidth(null) / 2);
              mouseYPos = e.getY() - (myImage.getHeight(null) / 2);     
              repaint();
        } 

        public void paint(Graphics g)
        {
              super.paint(g);            
              g.drawImage(myImage, mouseXPos, mouseYPos, this);
        }
   }

Any help with this issue is much appreciated

Answer 1

Swing is already supported buffering. Just paint on another container not the top-level one, please see code here:

public class ShootingGallery extends JApplet implements MouseMotionListener {

// VARIABLES
int mouseXPos;
int mouseYPos;
Image myImage;

@Override
public void init() {
    setSize(800, 600);// SET UP CURSOR IMAGE
    myImage = getImage(getDocumentBase(), "spongebob.gif");
    addMouseMotionListener(this);// ADD ACTION LISTENERS
    this.add(new PaintContainer());

}
@Override
public void mouseDragged(MouseEvent arg0) {
}

@Override
public void mouseMoved(MouseEvent e) {
    moveMouse(e);
    repaint();
}

public void moveMouse(MouseEvent e) {
    mouseXPos = e.getX() - (myImage.getWidth(null) / 2);
    mouseYPos = e.getY() - (myImage.getHeight(null) / 2);
}

public class PaintContainer extends JPanel {

     protected void paintComponent(Graphics g) {
         g.drawImage(myImage, mouseXPos, mouseYPos, this);
     }
}
}