testprogram.java

Java程序设计技巧与开发实例附书源代码。

import java.awt.*;
import java.awt.event.*;

public class TestProgram
    extends Frame
    implements ActionListener
{
   private Button quit = new Button("Quit");
   private TimedCounter counter = null;

   public TestProgram()
   {
      quit.addActionListener(this);
      counter = new TimedCounter(this, quit, 5);
      setLayout(new FlowLayout());
      add(quit);
      validate();
      pack();
      setVisible(true);
      counter.start();
   }

   public void actionPerformed(ActionEvent e)
   {
      if (e.getSource() == quit)
      {
         counter.stop();
         System.exit(0);
      }
   }

   public static void main(String args[])
   {
      TestProgram tp = new TestProgram();
   }
}