Re: java.awt.Frame - How to repaint without background update

import java.awt.*;
import java.awt.image.*;
public class TestApp extends Frame implements Runnable
{
  BufferedImage img = new BufferedImage(640, 480,
BufferedImage.TYPE_INT_RGB);
  public TestApp()
  {
    Graphics g = img.getGraphics();
    g.setColor(Color.RED);
    g.drawRect(0, 0, img.getWidth() - 1, img.getHeight() - 1);
    g.setColor(Color.BLUE);
    g.fillRect(1, 1, img.getWidth() - 2, img.getHeight() - 2);
    (new Thread(this)).start();
  }
  public void run()
  {
    while (true)
    {
      try { Thread.sleep(100); }
      catch (Exception e) { }
      repaint();
    }
  }
  public void paint(Graphics g)
  {
    g.drawImage(img, 50, 50, this);
  }
  public static void main(String [] args)
  {
    Frame frame = new TestApp();
    frame.setSize(740, 580);
    frame.setLocation(50, 50);
    frame.setVisible(true);
  }
}