Listing 2. Demo Button with Inner Class ActionListener
import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
/** This is another ButtonDemo Application
* @version $Id: ButtonDemo2.java,v 1.2
* 1999/01/25 19:07:00 ian Exp $
*/
public class ButtonDemo2 extends JFrame {
JButton b1, b2;
/** Construct a ButtonDemo2 */
public ButtonDemo2() {
super("Linux Journal Button Demo");
Container cp = getContentPane();
cp.setLayout(new FlowLayout());
// An Inner Class for implementing the action
// listeners
class MyActionListener implements ActionListener
{
String buttonMessage;
public void actionPerformed(ActionEvent event)
{
System.out.println("Thanks for pushing " +
buttonMessage);
System.exit(0);
}
MyActionListener(String msg) {
buttonMessage = msg;
}
}
cp.add(b1 = new JButton("Button 1"));
b1.addActionListener(new MyActionListener(
"Button 1"));
cp.add(b2 = new JButton("Button 2"));
b2.addActionListener(new MyActionListener(
"Button 2"));
pack();
}
public static void main(String av[]) {
new ButtonDemo2().setVisible(true);
}
}
Copyright © 1994 - 2018 Linux Journal. All rights reserved.