testbutton.java

来自「java2 primer plus一书源程序」· Java 代码 · 共 61 行

/*
 * TestButton.java
 *
 * Created on July 30, 2002, 2:36 PM
 */

package com.samspublishing.jpp.ch13;
import java.awt.*;
import java.awt.event.*;

/**
 *
 * @author  Stephen Potts
 * @version
 */
public class TestButton extends Frame 
              implements ActionListener
{
   Button btnExit;
   
   /** Creates new TestDialog */
   public TestButton()
   {
      btnExit = new Button("Exit");
      btnExit.setFont(new Font("Courier", Font.BOLD, 24));

      btnExit.setBackground(Color.cyan);
      Cursor curs = new Cursor(HAND_CURSOR);
      btnExit.setCursor(curs);
      btnExit.addActionListener(this);
      
      add(btnExit);
      this.setLayout(new FlowLayout());
     
      addWindowListener(new WinCloser());
      setTitle("Using a Button and an ActionListener");
      setBounds( 100, 100, 300, 300);
      setVisible(true);
   }
   
   public void actionPerformed(ActionEvent ae)
   {
      if (ae.getActionCommand().equals("Exit"))
         System.exit(0);
   }
   
   public static void main(String[] args)
   {
      TestButton td = new TestButton();
   }
   
}

class WinCloser extends WindowAdapter
{
   public void windowClosing(WindowEvent e)
   {
      System.exit(0);
   }
}