testjbutton.java

java2 primer plus一书源程序

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

package ch16;
import java.awt.*;
import javax.swing.*;
import java.awt.event.*;

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

      btnExit.setBackground(Color.cyan);
      Cursor curs = new Cursor(Cursor.HAND_CURSOR);
      btnExit.setCursor(curs);
      btnExit.addActionListener(this);
      this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

      getContentPane().add(btnExit);
      this.getContentPane().setLayout(new FlowLayout());
     
      setTitle("Using a JButton 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)
   {
      TestJButton td = new TestJButton();
   }
   
}