java:java中的Interface的应用,我…

package com.xudeyu.interfacee;

import java.awt.Toolkit;

import java.awt.event.ActionEvent;

import java.awt.event.ActionListener;

import java.util.Date;

import javax.swing.JOptionPane;

import javax.swing.Timer;

import static java.lang.System.*;

public class Interface

{

public static void main(String[] args)

{

ActionListener act_time = new TimPrinter();

Timer t = new Timer(1000, act_time);

t.start();

JOptionPane.showMessageDialog(null, "Quit program?");

exit(0);

}

}

class TimPrinter implements ActionListener

{

Date now = new Date();

@Override

public void actionPerformed(ActionEvent e)

{

out.println("At the tone ,the time is " + now);

Toolkit.getDefaultToolkit().beep();

}

}