clock.java

来自「针对越来越多的用户喜欢JAVA」· Java 代码 · 共 43 行

import java.awt.*; 
import java.applet.*; 
import java.util.Date; 
public class Clock extends Applet implements Runnable 
{
  Thread clockThread; 
  Font font;
  public void init()
  {
    font=new Font("TimesRoman",Font.BOLD,48); 
  }
  public void start() 
  {
    if (clockThread==null)
    {
    clockThread=new Thread(this,"Showtime"); 
    clockThread.start(); 
    } 
  } 
  public void run()
  {
    while (clockThread!=null)
    {
      repaint(); 
      try
      {
         clockThread.sleep(1000);
      }catch (InterruptedException e){}
    }
  }
  public void paint(Graphics g)
  { 
    Date now=new Date();
    g.setFont(font);
    g.setColor(Color.red);
    g.drawString(now.getHours()+":"+now.getMinutes()+":"  +now.getSeconds(),5,50); 
  } 
  public void stop() 
  {
    clockThread.stop(); 
  }
}