import java.awt.*;
import java.awt.event.*;
import java.text.SimpleDateFormat;
import java.util.*;

import javax.swing.*;
import javax.swing.border.*;

public class TestTimePiece extends JFrame {
    ControlPanel controlPane = null; //-----------------控制面板
    JTextField jTextField;

    public TestTimePiece() {
    super();
    init();
    }

    private void init() {
    controlPane = new ControlPanel(this);
    add(controlPane);
    setPreferredSize(new Dimension(300, 170));
    pack();
    setVisible(true);
    setResizable(false);
    this.setLocationRelativeTo(null);
    this.setDefaultCloseOperation(EXIT_ON_CLOSE);
    addKeyListener(new TimePieceKeyListener());
    }

    public static void main(String[] args) {
    new TestTimePiece();
    ;
    }

    class TimePieceKeyListener extends KeyAdapter {
    public void keyReleased(KeyEvent e) {
        controlPane.keyReleased(e);
    }
    }
}


class ControlPanel extends JPanel {
    private JFrame snakeFrame = null;
    JLabel jLabel,jLabel1, jLabel2, jLabel3, jLabel4;
    Date dateWhenStartJpanel;//保存程序启动时的时间    
    Date dateWhenClickF5;
    Thread thread ;
    public ControlPanel(JFrame snakeFrame) {
    super();
    this.snakeFrame = snakeFrame;
    init();
    }

    private void init() {
    dateWhenStartJpanel = new Date();
    setSize(608, 31);
    setBackground(Color.WHITE);
    setLayout(new FlowLayout());
    setBorder(new LineBorder(Color.white, 5));
    setLayout(new FlowLayout());
    jLabel = new JLabel();
    jLabel1 = new JLabel();
    jLabel2 = new JLabel();
    jLabel3 = new JLabel();
    jLabel4 = new JLabel();
    add(jLabel);
    add(jLabel1);
    add(jLabel2);
    add(jLabel3);
    add(jLabel4);
    jLabel.setText("F5:开始计时 F6:停止计时");
    }  

    public void keyReleased(KeyEvent e) {
    int keyCode = e.getKeyCode();
    if (keyCode == KeyEvent.VK_F5) {
        dateWhenClickF5 = new Date();//sava time when click F5
        thread = new Thread(new TimePieceRunnable())
        ;thread.start();
    } else if (keyCode == KeyEvent.VK_F6) {
        if(thread != null)thread.stop();
        else prompt("请先按F5");
    }
    }

    class TimePieceRunnable implements Runnable {
    public void run() {
        while (true) {
        Date tempDate = new Date();
        String tempString = formateToTime(tempDate, "现在时间是 E kk:mm:ss:");
        jLabel1.setText(tempString);
        tempString = formateToTime(dateWhenStartJpanel,
            "启动程序时间是 E kk:mm:ss:");
        jLabel2.setText(tempString);
        
        tempString = formateToTime(dateWhenClickF5,
            "最近一次按动F5时间是 E kk:mm:ss:");
        jLabel3.setText(tempString);
        tempDate = getMillisOfTimeDifference(dateWhenClickF5, tempDate);
        
        tempString = formateToTime(tempDate,
            "最近一次按动F5到现在的时间差是 kk:mm:ss:");
        jLabel4.setText(tempString);
        try {           
            repaint();
            Thread.sleep(100);////每隔0.1秒刷新一次
        } catch (InterruptedException e) {         
            e.printStackTrace();
        }
        }
    }
    }

    public String formateToTime(Date date, String timeRegex) {
    //Date date = new Date();
    //SimpleDateFormat f = new SimpleDateFormat("'BeiJing Time':yyyy年MM月dd日 E kk时mm分ss秒");
    SimpleDateFormat f = new SimpleDateFormat(timeRegex);
    String newTypeDate = f.format(date);
    return newTypeDate;

    }

    public Date getMillisOfTimeDifference(Date date1, Date date2) {
    Calendar calendar = Calendar.getInstance();
    calendar.setTime(date1);
    long timelnMillis1 = calendar.getTimeInMillis();
    calendar.setTime(date2);
    long timelnMillis2 = calendar.getTimeInMillis();
    calendar.setTimeInMillis(timelnMillis2 - timelnMillis1);
    return calendar.getTime();
    } 
    
    private static int prompt(String promptMessage) {
    return JOptionPane.showConfirmDialog(null, promptMessage, "友情提示",
        JOptionPane.WARNING_MESSAGE);
    }
  
}