Help with moving a black fillRect across the screen (Applet)

[HalfAZN]

My code compiles and runs perfectly, however nothing appears on the screen when I run the applet. Here is the code:

//This applet displays a message moving horizontally
//across the screen.
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;

public class Bannerz extends JApplet
  implements ActionListener
{
  private int xPos, yPos; //hold the coordinates of the banner

  public void init()
  {
    Container c=getContentPane();
    c.setBackground(Color.WHITE);
    xPos=c.getWidth();
    yPos=c.getHeight() /2;
    Timer clock=new Timer(30, this); //fires every 30 milliseconds
    clock.start();
  }

  //called automatically after a repaint request
  public void paint (Graphics g)
  {
    super.paint(g);
    g.setColor(Color.black);
    g.fillRect(80, 40, xPos, yPos);
  }

  //called automatically when the timer fires
  public void actionPerformed (ActionEvent e)
    {
      Container c=getContentPane();

      //Adjust the horizontal position of the banner:
      xPos--;
      if (xPos<-100)
       {
         xPos=c.getWidth();
       }

       //Set the vertical position of the banner:
       yPos=c.getHeight() /2;

       repaint();
     }
}

[Fubarable]

Don't draw directly in the JApplet but rather draw in a JPanel's paintComponent method and have the JApplet display the JPanel in its contentPane.