clock.java

来自「操作系统文件管理,全WINDOWS界面,实现鼠标事件处理,键盘事件处理等功能,屏」· Java 代码 · 共 48 行

import java.applet.Applet;
import java.awt.*;
import java.util.*;

public class  Clock extends Applet implements Runnable
{
 Thread clockThread;
 TextField f;
 public void init()
 {
 	f=new TextField(20);
 	add(f);
 }
 public void start() 
  {
      if(clockThread==null){
	    clockThread = new Thread(this,"Clock");
		clockThread.start();
	  }
  }
 public void run()
 {
   while(clockThread!=null){
     repaint();
	 try
	 {
	 	Date now = new Date();
	   clockThread.sleep(1000);
	   f.setText(now.getHours()+":"+now.getMinutes()+":"+now.getSeconds());
	 }
	 catch(InterruptedException e)
	 {
	   System.out.println(e);
	 }
   }  
 }
 //public void paint(Graphics g)
 //{
 // Date now = new Date();
  //g.drawString(now.getHours()+":"+now.getMinutes()+":"+now.getSeconds(),100,50);
 //}

 public void stop()
  {
    clockThread.stop();
	clockThread=null;
  }
}