java实现秒表功能

利用javax.swing.Timer类设计并实现一个模拟秒表功能的应用程序。程序中显示不断递增的时间，同时包含允许用户启动和终止计时功能的代码，以及一个可将时间复位为0的按钮。importjava...

利用Javax.swing.Timer类设计并实现一个模拟秒表功能的应用程序。程序中显示不断递增的时间，同时包含允许用户启动和终止计时功能的代码，以及一个可将时间复位为0的按钮。

import javax.sphpwing.*;
import java.awt.event.ActionListener;
import java.awt.event.ActionEvent;
import java.awt.BorderLayout;
import java.util.TimerTask; 
import java.text.DecimalFormat;
import java.awt.Color;
import java.awt.GridLayout;
import java.awt.Graphics;
import java.awt.Dimension;
import java.awt.Font;

public class stopWatch extends JPanel{ 
  private JLabel currentTimeLabel; //显示标签
  private JButton startJButton;  //开始按钮
  private JButton stopJButton;   //停止按钮
  private JButton resetJButton;  //复位按钮
  private long countMis,countSec,countMin,countHour;//计时变量
  private DecimalFormat textFormat=new DecimalFormat("00");//格式化输出
  Timer timer=new Timer(10,new TestActionListener());//计时单位10ms

  public stopWatch() { 
    JPanel panel=new JPanel(new GridLayout(1,3,5,10)); //网格布局嵌入按钮
    JPanel panel2=new JPanel();
    currentTimeLabel=new JLabel(" ");
    TestActionListener actionListener=new TestActionListener();
    currentTimeLabel.setForeground(Color.blue);
    currentTimeLabel.setFont(new Font("SAN_SERIF",Font.BOLD,50)); 

    startJButton=new JButton("Start");
    stopJButton=new JButton("Stop");
    resetJButton=new JButton("Reset");
    //设置JButton相关属性
    startJButton.snLQXaAiUetBorder(BorderFactory.createRaisedBevelBorder());
    stopJButton.setBorder(BorderFactory.createRaisedBevelBorder());
    resetJButton.setBorder(BorderFactory.createRaisedBevelBorder());

    startJButton.setFont(new java.awt.Font("Times New Roman", 1, 30));
    stopJButton.setFont(new java.awt.Font("Times New Roman", 1, 30));
    resetJButton.setFont(new java.awt.Font("Times New Roman", 1, 30));

    stopJButton.setBackground(Color.cyan);
    startJButton.setBackground(Color.red);
    resetJButton.setBackground(Color.orange);

    stopJButton.addActionListener(actionListener); 
    startJButton.addActionListener(actionListener); 
    resetJButton.addActionListener(actionListener); 

    this.setLayout(new BorderLayout()); 

    panel2.setBackground(Color.gray);
    panel2.setBorder(BorderFactory.createLoweredBevelBorder()); 
    panel2.add(currentTimeLabel);
    panel.add(stopJButton); 
    panel.add(startJButton); 
    panel.add(resetJButton);

    this.add(panel2,BorderLayout.NORTH);
    this.add(panel,BorderLayout.CENTER);

  } 
  //处理相关事件
  class TestActionListener implements ActionListener{ 
    public void actionPerformed(ActionEvent e){
      if(e.getSource()==startJButton){
        timer.start();
        startJButton.setEnabled(false);
      } 

      else if(e.getSource()==stopJjsButton){
        timer.stop();
        starhttp://www.cppcns.comtJButton.setEnabled(true);
      }

      else if(e.getSource()==resetJButton){
        countHour=0;
        countMin=0;
        countSec=0;
        countMis=0;
      }

      else{//满位后复位
        countMis++;
        if(countMis>=99){
          countSec++;
          countMis=0;
          if(countSec>=59){
            countMin++;
            countSec=0;
            if(countMin>=59){
              countHour++;
              countMin=0;
            }
          }
        }

      }

    }
  }


  public void paintComponent(Graphics g){
    super.paintComponent(g);
    currentTimeLabel.setText(textFormat.format(countHour)+":"+textFormat.format(countMin)+
    ":"+textFormat.format(countSec)+":"+textFormat.format(countMis));
    repaint(); 
  }


  public static void main(String args[]){ 
    JFrame frame=new JFrame("秒表演示"); 
    stopWatch stopwatch=new stopWatch(); 
    frame.setSize(480,280);
    frame.getContentPane().add(stopwatch); 
    frame.setDefaultCloseoperation(JFrame.EXIT_ON_CLOSE); 
    frame.setVisible(true); 
  } 
} 

运行结果：

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