Java Code

/* Demonstrate loops with animation */
import java.awt.*;
import javax.swing.*;
public class AnimateImage extends JApplet
{
   int x, y, size, move, speed, count;
   Image walker;
   public void init( )
   {
	   walker = getImage( getCodeBase( ), "zil_walk_right.gif" );
   }
   public void paint ( Graphics g )
   {
      x = 0;
      y = 50;
      size = 25;          // width and height same
      move = 1;           //number of pixels to move each time through loop
      count = 0;
      speed = 10000000;   // slow down loop (hack way without threads)

      while ( count < 5000 )
      {
          g.clearRect ( x, y, size, size);   // erase space
          x = x + move;                      // new x coordinate; y stays the same
          g.drawImage ( walker, x, y, this ); 
                                            // did we hit the edge of the applet?
          if ( x + size > getWidth( ) )  
          {
              move = -move;	               // if so, go back
        	  walker = getImage( getCodeBase( ), "zil_walk_left.gif" );
          }
          for ( int i=0; i<speed; i++ ) 	// hack way to slow down without threads
 	           ;                            // slow down painting so we can see it

          count = count + 1;
      }
   }
}