java电子时钟 示例源码(入门级)

import java.awt.Color;
import java.awt.Font;
import java.awt.Frame;
import java.awt.Graphics;

import javax.swing.JFrame;
import javax.swing.JPanel;


public class Myclock {
public static void main(String args[]){
	JFrame w=new JFrame();
	w.setSize(330, 220);
	w.setLocation(550,350);
	MyPanel001 mp=new MyPanel001();
	w.add(mp);
	Thread t =new Thread(mp);
	t.start();
	w.setVisible(true);
}
}
class MyPanel001 extends JPanel implements Runnable{

	int a=0;
	int b=0;
	int c=0;
	int y=2014;
	int m=9;
	int d=16;
	int q=2;
	
	@Override
	public void paint(Graphics g) {
		// TODO Auto-generated method stub
		super.paint(g);
		Font f = new Font("楷体",Font.BOLD,30);
		g.setFont(f);//设置画笔的格式
		g.setColor(Color.BLACK);
		g.drawString("北京时间：",5 ,40);
	    g.setColor(Color.RED);   
	    g.drawString(a ":" b ":" c,150 ,40);
	    g.setColor(Color.GREEN);   
	    g.drawString("日期：",5 ,100);
	    g.setColor(Color.BLUE);  
	    g.drawString(y "年" m "月" d "日",90 ,100);
	    g.setColor(Color.CYAN);  
	    g.drawString("星期：",5 ,160);
	    g.setColor(Color.DARK_GRAY);  
	    g.drawString(q "",90,160);
	}
	@Override
	public void run() {
		// TODO Auto-generated method stub
		while(true){
					c  ;
			if(c>59){
				c=0;
				b  ;
			}
			if(b>59){
				b=0;
				a  ;
			}
			if(a>23){
				a=0;
				d  ;
			}
			if(d>30){
				d=1;
				m  ;q  ;
			}
			if(m>12){
				m=1;
				y  ;
			}
			
			if(q>7){
				q=0;
			}
		
			try{
				Thread.sleep((long) 0.000001);
			}catch(Exception e)
			{	
			}repaint();
		}
	}
	
}

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资源文件列表

Clock/.classpath , 301
Clock/.project , 381
Clock/.settings/org.eclipse.jdt.core.prefs , 598
Clock/bin/MyPanel001.class , 2121
Clock/bin/Myclock.class , 827
Clock/music/tk.mp3 , 4299363
Clock/src/Myclock.java , 1616