clock.java

用JAVA做的一个非常漂亮的时钟（java applet）可换上自己喜欢的图片

/* Clock.java */
import java.util.*;
import java.awt.*;
import java.applet.*;
import java.text.*;

public class Clock extends Applet implements Runnable {
  Thread timer = null;
  Image clockp, simgs[], animal[];	//clockp 钟面图像  simgs[]:钟摆图像数组
					//animal[]:整点时出现的动画 
  int s,m,h,hh;			// s秒   m分   h小时	
  AudioClip ipAu,towerAu;	//ipAu为每秒发出的声音   towerAu 为整点报时声音
  boolean canPaint=true;
  boolean flag=false;
  boolean strike=true;
  int counter=0;
  int lasts;

  Image offscreen_buf = null;
  Graphics offg;
 
  
  int i,j,t = 0;
  int timeout= 166;
  String img_name[]={"t0","t3","t2","t1","t2","t3",   //钟摆出现的顺序是t0 t3 t2...t5 t6 t5 t4
                     "t0","t4","t5","t6","t5","t4"};  //(钟摆的一个周期)
  String gif_name[]={"1","2","3","4","5","6",	      //整点动画的文件名		
                     "7","8","9","10","11","12"};

  int lastxs=0, lastys=0, lastxm=0, lastym=0, lastxh=0, lastyh=0;

  Date dummy = new Date();
  GregorianCalendar cal = new GregorianCalendar();
  SimpleDateFormat df = new SimpleDateFormat("yyyy MM dd HH:mm:ss ");
  String lastdate = df.format(dummy);
  Font F=new Font("TimesRoman",Font.PLAIN,14);
  Font S=new Font("宋体",Font.BOLD,90);
  Date dat = null;
  Color fgcol = Color.black;
  Color fgcol2 = Color.blue;
  Color white=new Color(255,255,255);
  

public void init() {
  //请在此处加载声音
  towerAu = getAudioClip(getCodeBase(),"TowerClock.au");
  ipAu=getAudioClip(getCodeBase(),"clock.wav");  
 
  offscreen_buf = createImage(700,500);
  offg = offscreen_buf.getGraphics();

  simgs = new Image[12];
  animal =new Image[12];
  int xcenter,ycenter,s,m,h;
  xcenter=315;
  ycenter=112;


  s = (int)cal.get(Calendar.SECOND);  		                 //初始化指针位置
  m = (int)cal.get(Calendar.MINUTE);
  h = (int)cal.get(Calendar.HOUR_OF_DAY);
    
  lastxs = (int)(Math.cos(s * 3.14f/30 - 3.14f/2) * 15 + xcenter);
  lastys = (int)(Math.sin(s * 3.14f/30 - 3.14f/2) * 15 + ycenter);
  lastxm = (int)(Math.cos(m * 3.14f/30 - 3.14f/2) * 13 + xcenter);
  lastym = (int)(Math.sin(m * 3.14f/30 - 3.14f/2) * 13 + ycenter);
  lastxh = (int)(Math.cos((h*30 + m/2) * 3.14f/180 - 3.14f/2) * 9 + xcenter);
  lastyh = (int)(Math.sin((h*30 + m/2) * 3.14f/180 - 3.14f/2) * 9 + ycenter);
  lasts=s;

  if(h<12) 
       if(h!=11) hh=h+1;
       else      hh=0;	 
  else 
       if(h!=23) hh=h-12+1;
       else      hh=0; 

  MediaTracker mt = new MediaTracker(this);

  //请在此处加载图片对象
   clockp=getImage(getCodeBase(),"yyc.jpg");
   
  for(int i=0;i<12;i++){
     animal[i]=getImage(getCodeBase(),gif_name[i]+".gif");
     simgs[i]=getImage(getCodeBase(),img_name[i]+".gif");
  }  
  

}

public void paint(Graphics g) {
  int xh, yh, xm, ym, xs, ys,strike_times;
  int xcenter,ycenter;
  String today;
  Integer gif_number;
  g.setColor(white); 
  g.fillRect(1,1,738,499);
    
  xcenter=315;
  ycenter=112;
  dat = new Date();
  cal.setTime(dat);
  s = (int)cal.get(Calendar.SECOND);
  m = (int)cal.get(Calendar.MINUTE);
  h = (int)cal.get(Calendar.HOUR_OF_DAY);
  today = df.format(dat);		//指针位置

  
  xs = (int)(Math.cos(s * 3.14f/30 - 3.14f/2) * 15 + xcenter);
  ys = (int)(Math.sin(s * 3.14f/30 - 3.14f/2) * 15 + ycenter);
  xm = (int)(Math.cos(m * 3.14f/30 - 3.14f/2) * 13 + xcenter);
  ym = (int)(Math.sin(m * 3.14f/30 - 3.14f/2) * 13 + ycenter);
  xh = (int)(Math.cos((h*30 + m/2) * 3.14f/180 - 3.14f/2) * 9 + xcenter);
  yh = (int)(Math.sin((h*30 + m/2) * 3.14f/180 - 3.14f/2) * 9 + ycenter);

  for(int loop=0;loop<100;loop++)
   {int x=(int)(java.lang.Math.random()*740);
    int y=(int)(java.lang.Math.random()*500);
    int red=(int)(java.lang.Math.random()*255); 
    int green=(int)(java.lang.Math.random()*255);
    int blue=(int)(java.lang.Math.random()*255);
    g.setColor(new Color(red,green,blue));
    if((red>70) &&(green>70)&&(blue>70))
    g.drawString("*",x,y); 
   
  } 

  g.setFont(F);
  
  lastxs=xs; lastys=ys;
  lastxm=xm; lastym=ym;
  lastxh=xh; lastyh=yh;
  lastdate = today;
  
  if(h<12) hh=h;
  else hh=h-12; 
  if(hh==0) strike_times=12; 
  else strike_times=hh;
 
  //此处添加整点报时代码
if((s==0 && m==0)||flag)
 {                //判断整点报时
    if (counter<strike_times)
    {
        flag=true;
		if( lasts != s)
		{
            if(strike)
            {
			   counter++;
               towerAu.play();
			}
            if (strike) strike=false;
					  else strike=true;
		}
	}
    else
    { 
	    counter=0;
		flag=false;
    }   
 }
 else  if( lasts!=s) 
	ipAu.play();       
 lasts = s; 
       
  //此处添加整点动画代码
  if(s<=15 && m==0)
     g.drawImage(animal[strike_times-1],390,100,this);
  
  
   if(canPaint){
		 t +=1;
		 if(t==12)t=0;
    	      }
  g.drawImage(simgs[t],270,140,this);    //画钟摆
  switch(t)
      {
        case 0: g.setColor(Color.black);
                break;
        case 1: g.setColor(Color.magenta);
                break;
        case 2: g.setColor(Color.blue);
                break;

      }
  g.setFont(S);
  g.drawString("大 摆 钟",155,380);
  for(int delay=0;delay<20000;delay++);
  g.setFont(F);
  g.drawImage(clockp,280,71,this);    //画钟面
  g.setColor(fgcol2);
  g.setColor(getBackground());
  g.setColor(fgcol2);
  g.drawString(today,275, 420);  
  g.drawLine(xcenter, ycenter, xs, ys);    //画指针
  g.setColor(fgcol);
  g.drawLine(xcenter, ycenter-1, xm, ym);
  g.drawLine(xcenter-1, ycenter, xm, ym);
  g.drawLine(xcenter, ycenter-1, xh, yh);
  g.drawLine(xcenter-1, ycenter, xh, yh);
  g.setColor(new Color(150,200,150));
 
   canPaint=false;
   dat=null;

}

public void start() {
  int i;
  if(timer == null)
    {
      timer = new Thread(this);
      timer.start();
    }
 }

public void stop() {
  timer = null;
}

public void run() {
  while (timer != null) {
       try {timer.sleep(timeout);} catch (InterruptedException e){}
    canPaint=true;
    repaint();
  }
  timer = null;
}

public void update(Graphics g){
   //使用双缓冲绘制离屏图片
   print(offg);
   g.drawImage(offscreen_buf,0,0,this);
}
}