clock.java

来自「jbuilder2005」· Java 代码 · 共 42 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(),50,50);
    }
    public void stop()
    {
        clockThread.stop();
    }
}