AnonymousInnerClassTest.java

package anonymousInnerClass;

import javax.swing.*;
import java.awt.*;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.util.Date;

/**
 * This program demonstrates anonymous inner classes.
 *
 * @author Cay Horstmann
 * @version 1.11 2015-05-12
 */
public class AnonymousInnerClassTest {
    public static void main(String[] args) {
        TalkingClock clock = new TalkingClock();
        clock.start(1000, true);

        // keep program running until user selects "Ok"
        JOptionPane.showMessageDialog(null, "Quit program?");
        System.exit(0);
    }
}

class TalkingClock {

    /**
     * Starts the clock.
     *
     * @param interval interval the interval between messages (in milliseconds)
     * @param beep     true if the clock should beep
     */
    public void start(int interval, boolean beep) {
        ActionListener listener = new ActionListener() {
            @Override
            public void actionPerformed(ActionEvent e) {
                System.out.println("At the tone, the time is " + new Date());
                if (beep) Toolkit.getDefaultToolkit().beep();
            }
        };
        Timer t = new Timer(interval, listener);
        t.start();
    }
}