jbuttondemo.java

java程序设计源代码

import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import javax.swing.border.*;

public class JButtonDemo extends JApplet {
	JButton b1 = new JButton("JButton 1");
	JButton b2 = new JButton("JButton 2");
	JTextField t = new JTextField(20);
	public void init() {
		ActionListener al = new ActionListener() {
			public void actionPerformed(ActionEvent e){
				String name = 
					((JButton)e.getSource()).getText();
				t.setText(name + " Pressed");
			}
		};
		b1.setToolTipText("Press Button will show msg");
		b1.setBorder( new BevelBorder(BevelBorder.RAISED) );
		b1.setIcon( new ImageIcon( "cupHJbutton.gif") );
		
		b1.addActionListener(al);
		b2.addActionListener(al);

		getContentPane().setLayout( new FlowLayout() );
		getContentPane().add(b1);
		getContentPane().add(b2);
		getContentPane().add(t);
	}
	public static void main(String args[]) {
		JApplet applet = new JButtonDemo();
		JFrame frame = new JFrame("Test Swing");
		frame.addWindowListener(new WindowAdapter() {
			public void windowClosing(WindowEvent e){
				System.exit(0);
			}
		});
		frame.getContentPane().add(
			applet, BorderLayout.CENTER);
		frame.setSize(400,300);
		applet.init();
		applet.start();
		frame.setVisible(true);
	}
}