waysun一路阳光

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Java 倒计时【收藏】
http://haidii.javaeye.com/blog/284821

最近用java编写了一个倒计时的程序，贴出来与大家共享。
先看看截图吧：
1.开始打开程序时的界面


2.设定好时间，点击“开始计时”时的界面


3.定时时间到时的界面


4.退出程序时的界面


5.同时，本程序具有检测功能，对您的时间输入进行检测


下面是源码：

  1. package test;
  3. import java.awt.BorderLayout;
  4. import java.awt.Color;
  5. import java.awt.Dimension;
  6. import java.awt.Font;
  7. import java.awt.Toolkit;
  8. import java.awt.event.ActionEvent;
  9. import java.awt.event.ActionListener;
  10. import java.awt.event.WindowAdapter;
  11. import java.awt.event.WindowEvent;
  12. import java.sql.Timestamp;
  13. import java.util.Calendar;
  14. import java.util.GregorianCalendar;
  16. import javax.swing.JButton;
  17. import javax.swing.JFrame;
  18. import javax.swing.JLabel;
  19. import javax.swing.JOptionPane;
  20. import javax.swing.JPanel;
  21. import javax.swing.JTextField;
  22. import javax.swing.UIManager;
  23. import javax.swing.UnsupportedLookAndFeelException;
  25. public class Countdown extends JFrame implements ActionListener{
  26.     private static final long serialVersionUID = -3439634693767815667L;
  27.     private JLabel startTime,pastTime,label1,label2,lyear,lmonth,lday,lhour,lmin,lsec;
  28.     private JTextField year,month,day,hour,min,sec;
  29.     private JButton ok;
  30.     private String str;
  31.     private int y,m,d,h,mi,s;
  32.     private boolean runflag=true; 
  33.     
  34.     public Countdown(){
  35.         super("倒计时牌");
  36.         init();
  37.         this.setSize(450,150);
  38.         Dimension d = Toolkit.getDefaultToolkit().getScreenSize();
  39.         int h = (int) d.getHeight() / 3;
  40.         int w = (int) d.getWidth() / 3;
  41.         this.setLocation(w, h);
  42.         this.setVisible(true);
  43.         this.setResizable(false);
  44.         this.setDefaultCloseOperation(JFrame.DO_NOTHING_ON_CLOSE);
  45.         this.addWindowListener(new WindowAdapter(){
  46.             public void windowClosing(WindowEvent e) {
  47.                 int exit=JOptionPane.showConfirmDialog(Countdown.this, "确定退出吗？", "退出", JOptionPane.OK_CANCEL_OPTION);
  48.                 if(exit==JOptionPane.OK_OPTION)
  49.                     System.exit(0);
  50.             }
  51.         });
  52.     }
  53.     private void init(){
  54.         label1=new JLabel("现在距规定时间还有:");
  55.         label2=new JLabel();
  56.         startTime=new JLabel("开始时间：");
  57.         pastTime=new JLabel("已过时间：");
  58.         
  59.         JPanel north=new JPanel();
  60.         north.setLayout(new BorderLayout());
  61.         north.add(label1,BorderLayout.CENTER);
  62.         north.add(startTime,BorderLayout.NORTH);
  63.         
  64.         this.add(north,BorderLayout.NORTH);
  65.         this.add(label2,BorderLayout.CENTER);
  66.         
  67.         JPanel south=new JPanel();
  68.         south.setLayout(new BorderLayout());
  69.         JPanel south_center=new JPanel();
  70.         Calendar c=Calendar.getInstance();
  71.         year=new JTextField(c.get(Calendar.YEAR)+"",6);
  72.         month=new JTextField(c.get(Calendar.MONTH)+1+"",4);
  73.         day=new JTextField(c.get(Calendar.DAY_OF_MONTH)+"",4);
  74.         hour=new JTextField(c.get(Calendar.HOUR_OF_DAY)+"",4);
  75.         min=new JTextField(c.get(Calendar.MINUTE)+"",4);
  76.         sec=new JTextField(c.get(Calendar.SECOND)+"",4);
  77.         lyear=new JLabel("年");
  78.         lmonth=new JLabel("月");
  79.         lday=new JLabel("日");
  80.         lhour=new JLabel("时");
  81.         lmin=new JLabel("分");
  82.         lsec=new JLabel("秒");
  83.         ok=new JButton("开始计时");
  84.         south_center.add(year);
  85.         south_center.add(lyear);
  86.         south_center.add(month);
  87.         south_center.add(lmonth);
  88.         south_center.add(day);
  89.         south_center.add(lday);
  90.         south_center.add(hour);
  91.         south_center.add(lhour);
  92.         south_center.add(min);
  93.         south_center.add(lmin);
  94.         south_center.add(sec);
  95.         south_center.add(lsec);
  96.         south_center.add(ok);
  97.         south.add(south_center,BorderLayout.CENTER);
  98.         south.add(pastTime,BorderLayout.NORTH);
  99.         this.add(south,BorderLayout.SOUTH);
  100.         
  101.         ok.addActionListener(this);
  102.         label1.setFont(new Font("宋体",Font.BOLD,20));
  103.         label2.setFont(new Font("宋体",Font.BOLD,26));
  104.         label1.setForeground(new Color(154,0,255));
  105.         label2.setForeground(Color.RED);
  106.     }
  107.     
  108.     public synchronized void stopthread(){
  109.         runflag=false;
  110.     }
  111.     
  112.     public synchronized void startthread(){
  113.         runflag=true;
  114.     }
  116.     public synchronized boolean getrunflag(){
  117.         return runflag;
  118.     }
  120.     
  121.     class MyThread extends Thread{
  122.         Calendar target=null;
  123.         Calendar startTime=null;
  124.         long targetInMill=0;
  125.         long startInMill=0;
  126.         
  127.         private MyThread(int y,int m,int d,int h,int mi,int s){
  128.             target=new GregorianCalendar(y,m-1,d,h,mi,s); 
  129.             startTime=Calendar.getInstance();
  130.             startInMill=startTime.getTimeInMillis();
  131.             targetInMill=target.getTimeInMillis();
  132.         }
  133.         public void run(){
  134.             while(runflag){
  135.                 runflag=true;
  136.                 Calendar today=new GregorianCalendar(); 
  137.                 long todayInMill=today.getTimeInMillis();
  138.                 long dd=targetInMill-todayInMill;
  139.                 long dis=dd/1000;
  140.                 long ms=(dd/100)%10;
  141.                 long mms=(dd/10)%10;
  142.                 String d;
  144.                 int day=(int) (dis/(3600*24));
  145.                 int hour=(int) (dis%(3600*24)/3600);
  146.                 int min=(int) (dis%3600/60);
  147.                 int sec=(int) (dis%60);
  148.                 if(day<10)
  149.                     d="  "+day;
  150.                 else if(day>=10&&day<100)
  151.                     d=" "+day;
  152.                 else
  153.                     d=day+"";
  154.                 String s=d+" 天 "+intToString(hour)+" 小时 "+intToString(min)+" 分 "+intToString(sec)+" 秒"+ms+" "+mms;
  155.                 label2.setText(s);
  156.                 pastTime();
  157.                 if(dd<=0){
  158.                     ok.setText("重新开始");
  159.                     JOptionPane.showMessageDialog(Countdown.this, "时间到");
  160.                     break;
  161.                 }
  162.                 try {
  163.                     Thread.sleep(10);
  164.                 } catch (InterruptedException e) {
  165.                     e.printStackTrace();
  166.                 }
  167.             }
  168.         }
  169.         
  170.         private void pastTime(){
  171.             Calendar today=new GregorianCalendar(); 
  172.             long nowInMill=today.getTimeInMillis();
  173.             long dd=nowInMill-startInMill;
  174.             long dis=dd/1000;
  175.             long ms=(dd/100)%10;
  176.             long mms=(dd/10)%10;
  177.             String d;
  179.             int day=(int) (dis/(3600*24));
  180.             int hour=(int) (dis%(3600*24)/3600);
  181.             int min=(int) (dis%3600/60);
  182.             int sec=(int) (dis%60);
  183.             if(day<10)
  184.                 d="  "+day;
  185.             else if(day>=10&&day<100)
  186.                 d=" "+day;
  187.             else
  188.                 d=day+"";
  189.             String s=d+" 天 "+intToString(hour)+" 小时 "+intToString(min)+" 分 "+intToString(sec)+" 秒"+ms+" "+mms;
  190.             pastTime.setText("已过时间："+s);
  191.         }
  192.     }
  194.     public String intToString(int i){
  195.         if(i<10){
  196.             str="0"+i;
  197.             return str;
  198.         }
  199.         else 
  200.             return i+"";
  201.     }
  202.     
  203.     public void actionPerformed(ActionEvent e) {
  204.         String str=e.getActionCommand();
  205.         MyThread t=null;
  206.         if(str.equals("开始计时")){
  207.             try {
  208.                 this.startthread();
  209.                 startTime.setText("开始时间："+new Timestamp(System.currentTimeMillis()));
  210.                 y=Integer.parseInt(year.getText());
  211.                 m=Integer.parseInt(month.getText());
  212.                 d=Integer.parseInt(day.getText());
  213.                 h=Integer.parseInt(hour.getText());
  214.                 mi=Integer.parseInt(min.getText());
  215.                 s=Integer.parseInt(sec.getText());
  216.                 year.setEditable(false);
  217.                 month.setEditable(false);
  218.                 day.setEditable(false);
  219.                 hour.setEditable(false);
  220.                 min.setEditable(false);
  221.                 sec.setEditable(false);
  222. //              ok.setEnabled(false);
  223.                 ok.setText("停止");
  224.                 t=new MyThread(y,m,d,h,mi,s);
  225.                 t.start();
  226.             } catch (NumberFormatException e1) {
  227.                 JOptionPane.showMessageDialog(this, "对不起，请输入数字！", "错误提示", JOptionPane.ERROR_MESSAGE);
  228.             }
  229.         }
  230.         if(str.equals("停止") || str.equals("重新开始")){
  231.             this.stopthread();
  232.             year.setEditable(true);
  233.             month.setEditable(true);
  234.             day.setEditable(true);
  235.             hour.setEditable(true);
  236.             min.setEditable(true);
  237.             sec.setEditable(true);
  238.             ok.setText("开始计时");
  239.         }
  240.         
  241.     }
  242.     
  243.     public static void main(String[] args) {
  244.         try {
  245.             UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
  246.             new Countdown();
  247.         } catch (ClassNotFoundException e) {
  248.             e.printStackTrace();
  249.         } catch (InstantiationException e) {
  250.             e.printStackTrace();
  251.         } catch (IllegalAccessException e) {
  252.             e.printStackTrace();
  253.         } catch (UnsupportedLookAndFeelException e) {
  254.             e.printStackTrace();
  255.         }
  257.     }
  258. }
posted on 2009-04-16 09:50 weesun一米阳光 阅读(1366) 评论(0)  编辑  收藏 所属分类: JAVA源码 、总结备用

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