import java.awt.*;
    import java.applet.*;
    public class TestAnim1 extends Applet implements Runnable {
	// Declare a Thread object
	Thread count;
	int x;
	int y;
 
	// initialize applet
	public void init()
	{
	    x = 0;
	    y = 20;
	    setBackground(Color.yellow);
 
	    // init thread
	    count = new Thread(this);
 
	    // start the thread
	    count.start();
	}
 
	// Thread code, overrides run method of Runnable
	public void run()
	{
	    while (true) {
	        try {
		    // delay
	            count.sleep(100);
	            x++;
 
	            // call paint method
	            repaint();
	        }
		catch(Exception e) {} // do nothing
	    }
	}
 
	// paint method
	public void paint(Graphics g) {
	    g.setColor(Color.green);
	    g.fillOval(x, y, 30, 30);
	}
    }