[java] Double Buffering Images?

import java.applet.*;
import java.awt.*;
import java.net.*;

public class Threads1 extends Applet implements Runnable {

   Image pic;
   URL base;
   MediaTracker mt;
   int width, height;
   int i = 200;
   Thread t = null;
   boolean threadSuspended;

   public void init() { 
      mt = new MediaTracker(this);
      try {
           base = getDocumentBase();
       }
       catch (Exception e) {}
       pic = getImage(base,"FFRJ/start.gif");
       try {
              mt.waitForAll();
       }
       catch (InterruptedException  e) {}
      width = getSize().width;
      height = getSize().height;
      setBackground( Color.black );
   }
   public void destroy() {
      System.out.println("destroy()");
   }

   public void start() {
      if ( t == null ) {
         t = new Thread( this );
         threadSuspended = false;
         t.start();
      }
      else {
         if ( threadSuspended ) {
            threadSuspended = false;
            synchronized( this ) {
               notify();
            }
         }
      }
   }
   public void stop() {
      threadSuspended = true;
   }
   public void run() {
      try {
         while (true) {
            if(i<=-100)
                i=300;
            i-=5;
            if ( i == 10 ) {
               i = 0;
            }
            showStatus( "i is " + i );
            if ( threadSuspended ) {
               synchronized( this ) {
                  while ( threadSuspended ) {
                     wait();
                  }
               }
            }
            repaint();
            t.sleep( 10 );  
         }
      }
      catch (InterruptedException e) { }
   }
   public void paint( Graphics g ) {

      g.setColor( Color.green );
      g.drawImage(pic,20,i,this);
      g.drawRect( 10, i, 100, 15 );

   }
}