JAVA 框架显示系统时间

package Rong;

import java.awt.BorderLayout;

import java.awt.Color;

import java.awt.Dimension;

import java.awt.Toolkit;

import java.text.SimpleDateFormat;

import java.util.Date;

import java.util.Timer;

import java.util.TimerTask;

import javax.swing.JFrame;

import javax.swing.JLabel;

import javax.swing.SwingConstants;

import javax.swing.border.LineBorder;

public class TestStatus extends JFrame{

 private static final long serialVersionUID =
1L;

 JLabel status=new JLabel();

 SimpleDateFormat s=new
SimpleDateFormat("yyyy-MM-dd HH:mm:ss");

 

 Date d;

 public TestStatus(){

  this.setTitle("状态栏中实时显示系统时间");

  this.setSize(400, 400);

  Dimension
dim=Toolkit.getDefaultToolkit().getScreenSize();

  this.setLocation((dim.width-this.getWidth())/2,
(dim.height-this.getHeight())/2);

 
this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

  this.setVisible(true);

 

  Timer timer = new Timer();

  TimerTask tt = new TimerTask() {

   public void run() {

    d=new
Date();

   
status.setText(" 当前时间:"+ s.format(d));//显示系统日期时间

   
status.setBorder(new LineBorder(Color.black, 1,
false));//设置边框线

   
status.setHorizontalAlignment(SwingConstants.CENTER);//设置文字在状态中居中显示

   }

   

  };

  timer.schedule(tt, 0, 1000);
 

 
this.getContentPane().add(status,BorderLayout.SOUTH);

 }

 public static void main(String args[]){

  new TestStatus();

 }

}