//********************************************************************//  Rocket.java       Author: Lewis/Loftus////  Demonstrates the use of polygons and polylines.//********************************************************************import javax.swing.JFrame;public class Rocket{   //-----------------------------------------------------------------   //  Creates the main frame of the program.   //-----------------------------------------------------------------   public static void main (String[] args)   {      JFrame frame = new JFrame ("Rocket");      frame.setDefaultCloseOperation (JFrame.EXIT_ON_CLOSE);      RocketPanel panel = new RocketPanel();      frame.getContentPane().add(panel);      frame.pack();      frame.setVisible(true);   }}