//********************************************************************//  PushCounter.java       Authors: Lewis/Loftus////  Demonstrates a graphical user interface and an event listener.//********************************************************************import javax.swing.JFrame;public class PushCounter{   //-----------------------------------------------------------------   //  Creates the main program frame.   //-----------------------------------------------------------------   public static void main (String[] args)   {      JFrame frame = new JFrame ("Push Counter");      frame.setDefaultCloseOperation (JFrame.EXIT_ON_CLOSE);      frame.getContentPane().add(new PushCounterPanel());      frame.pack();      frame.setVisible(true);   }}