怎么用JAVA 实现秒表功能 给我一点思路！ 谢谢

Question

怎么用JAVA 实现秒表功能 给我一点思路！ 
由于是初学者，所以不是太会的。
希望大家帮我下 给我开拓下思路谢谢了。

Answer 1

  import   javax.swing.*;   
  import   java.awt.event.ActionListener;   
  import   java.awt.event.ActionEvent;   
  import   java.awt.*;   
  import   java.util.Date;   
  import   java.text.SimpleDateFormat;   
    
  /**   
    *   <p>File:   StopWatch.java</p>   
    *   <p>Description:   </p>   
    *   <p><a   href="http://www.bioz.info/">BIOZ.info</a>   Copyright   (c)   2004</p>   
    *   
    *   @author   <a   href="mailto:[email protected]">Chance</a>   
    */   
  public   class   StopWatch   extends   JFrame   {   
          JButton   btnStart,btnStop;   
          JLabel   label;   
          Timer   timer;   
          public   StopWatch()   {   
                  label=new   JLabel("00:00:00.000");   
                  btnStart=new   JButton("start");   
                  btnStop=new   JButton("stop");   
                  final   int   delay=100;   
                  final   Date   startTime=new   Date();   
                  final   SimpleDateFormat   sdf=new   SimpleDateFormat("HH:mm:ss.S");   
      final   Action   taskPerformer   =   new   AbstractAction()   {   
              public   void   actionPerformed(ActionEvent   evt)   {   
                      //显示时间   
                      Date   d=new   Date(System.currentTimeMillis()-startTime.getTime()-28800000);   
                              label.setText(sdf.format(d));   
                              label.repaint();   
              }   
      };   
                  btnStart.addActionListener(new   ActionListener(){   
                          public   void   actionPerformed(ActionEvent   evt)   {   
                                  startTime.setTime(new   Date().getTime());   
                                  timer=new   Timer(delay,   taskPerformer);   
                                  timer.start();   
                            }   
                  });   
                  btnStop.addActionListener(new   ActionListener(){   
                          public   void   actionPerformed(ActionEvent   evt)   {   
                                  if(timer!=null&&timer.isRunning())   
                                          timer.stop();   
                            }   
                  });   
    
                  Container   c=getContentPane();   
                  c.add(label,BorderLayout.NORTH);   
                  c.add(btnStart,BorderLayout.CENTER);   
                  c.add(btnStop,BorderLayout.SOUTH);   
          }   
    
    
          public   static   void   main(String[]   args)   {   
    
                  javax.swing.SwingUtilities.invokeLater(new   Runnable()   {   
                          public   void   run()   {   
                                  createAndShowGUI();   
                          }   
                  });   
    
          }   
    
          private   static   void   createAndShowGUI()   {   
                  StopWatch   window=new   StopWatch();   
                  window.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);   
                  window.pack();   
                  window.setVisible(true);   
          }   
  }   

Answer 2

上面一个没排版 import javax.swing.*;
import java.awt.event.ActionListener;
import java.awt.event.ActionEvent;
import java.awt.*;
import java.util.Date;
import java.text.SimpleDateFormat;
public class StopWatch extends JFrame {
JButton btnStart, btnStop;
JLabel label;
Timer timer; public StopWatch() {
label = new JLabel("00:00:00.000");
btnStart = new JButton("start");
btnStop = new JButton("stop");
final int delay = 100;
final Date startTime = new Date();
final SimpleDateFormat sdf = new SimpleDateFormat("HH:mm:ss.S");
final Action taskPerformer = new AbstractAction() {
public void actionPerformed(ActionEvent evt) {
// 显示时间
Date d = new Date(System.currentTimeMillis()
- startTime.getTime() - 28800000);
label.setText(sdf.format(d));
label.repaint();
}
};
btnStart.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent evt) {
startTime.setTime(new Date().getTime());
timer = new Timer(delay, taskPerformer);
timer.start();
}
});
btnStop.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent evt) {
if (timer != null && timer.isRunning())
timer.stop();
}
}); Container c = getContentPane();
c.add(label, BorderLayout.NORTH);
c.add(btnStart, BorderLayout.CENTER);
c.add(btnStop, BorderLayout.SOUTH);
} public static void main(String[] args) { javax.swing.SwingUtilities.invokeLater(new Runnable() {
public void run() {
createAndShowGUI();
}
}); } private static void createAndShowGUI() {
StopWatch window = new StopWatch();
window.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
window.pack();
window.setVisible(true);
}
}

Answer 3

有点难啊 我那个java.lang.…………什么的 都没学会那有点看不懂 不过谢谢大家 帮我编写他了。