// Make sure you do your import statements!
//  for example, these:

import javax.swing.JPanel;
import javax.swing.JFrame;

public class Circles
{
   public static void main( String args[] )
   {
     // set up main program here


   }
}

class CirclePanel extends JPanel 
{
   public void paintComponent( Graphics g )
   {
      // draw the circles here, in the panel class


   }
}