java Timer的应用

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;

public class Test implements ActionListener{
 public void actionPerformed (ActionEvent event){
   Date now=new Date();
   System.out.println("at the tone,the time is"+now);
   //Toolkit.getDefaultToolkit().beep();
   System.out.println("OK");
 }

public static void main(String[] args){
 Test tp=new Test();
 Timer timer=new Timer(1000,tp);
 timer.start();
 JOptionPane.showMessageDialog(null,"quit");
 System.exit(0);
 }
}
 
运行结果:

C:\>java Test
at the tone,the time isSun Oct 29 13:40:25 CST 2006
OK
at the tone,the time isSun Oct 29 13:40:25 CST 2006
OK
at the tone,the time isSun Oct 29 13:40:26 CST 2006
OK
at the tone,the time isSun Oct 29 13:40:27 CST 2006
OK
at the tone,the time isSun Oct 29 13:40:28 CST 2006
OK
at the tone,the time isSun Oct 29 13:40:29 CST 2006
OK
at the tone,the time isSun Oct 29 13:40:30 CST 2006
OK
at the tone,the time isSun Oct 29 13:40:31 CST 2006
OK
at the tone,the time isSun Oct 29 13:40:32 CST 2006
OK