java progarm for moving cat.

import java.awt.Graphics;
import java.awt.Image;
import java.awt.Color;
import java.applet.*;
public class cat extends Applet implements Runnable
 {
  Image catpics[] = new Image[9];
  Image currentimg;
  Thread runner;
  int xpos;
  int ypos = 50;
public void init()
{
    String catsrc[] = {
 "right1.gif", "right2.gif", "stop.gif", "yawn.gif", "scratch1.gif",
 "scratch2.gif","sleep1.gif", "sleep2.gif",  "awake.gif"     
 };
 for (int i=0; i < catpics.length; i++)
 {
        catpics[i] = getImage(getDocumentBase(),catsrc[i]);
    }
}
         public void start()
   {
     if (runner == null)
     {
      runner = new Thread(this);
      runner.start();
     }
          }


  public void stop()
   {
         if (runner != null)
     {
                  runner.stop();
                  runner = null;
             }
          }
         public void run()
   {
         setBackground(Color.white);
         catrun(0, size().width / 2);
         currentimg = catpics[2];
                   repaint();
         pause(1000);
         currentimg = catpics[3];
                repaint();
                pause(1000);
                catscratch(4);
                catsleep(5);
                currentimg = catpics[8];
                repaint();
                pause(500);
                catrun(xpos, size().width + 10);
          }
       void catrun(int start, int end)
   {
         for (int i = start; i < end; i += 10)
    {
                 xpos = i;
                 if (currentimg == catpics[0])
                    currentimg = catpics[1];
                 else currentimg = catpics[0];
                 repaint();
                 pause(150);
             }
          }
      void catscratch(int numtimes)
   {
            for (int i = numtimes; i > 0; i--)
     {
                  currentimg = catpics[4];
                  repaint();
                  pause(150);
                  currentimg = catpics[5];
                  repaint();
           pause(150);
              }
         }


       void catsleep(int numtimes)
   {
            for (int i = numtimes; i > 0; i--)
     {
                  currentimg = catpics[6];
                  repaint();
                  pause(250);
                  currentimg = catpics[7];
                  repaint();
                  pause(250);
              }
   }
     
  void pause(int time)
   {
            try
     {
      Thread.sleep(time);
     }
        
     catch (InterruptedException e)
     {
     }
   }
      public void paint(Graphics g)
   {
           if (currentimg != null)
              g.drawImage(currentimg, xpos, ypos, this);
   }
 }
/*
<APPLET
CODE=cat.java
WIDTH=600
HEIGHT=100 >
</APPLET>
*/

Fig.
Output: