import java.awt.*;
import java.util.*;
import java.awt.swing.*;
public class PlanetApplet extends JApplet {
 PlanetCanvas planetCanvas = new PlanetCanvas();                                                              
 PlanetThread planetThread = new PlanetThread(planetCanvas); 
 public void init () {
  getContentPane().setLayout(new BorderLayout());
  getContentPane().add("Center", planetCanvas);    
  planetThread.start();           
 }
}