一共五个源代码文件,,分别实现哈希表遍历,,播放动画,,写文件,,带对话框的窗口和访问数据库!

import java.applet.*;
import java.awt.*;
import java.awt.event.*;
public class Boy extends Applet implements Runnable,ActionListener
{  
   final int number=8; 
   int count=0;
   boolean move=true;
   Thread mythread;
   Button startPlay,stopPlay,continuePlay;
   Image[]  pic=new Image[number];
   public void init()
   { 
       for(int i=0;i<number;i++)
         { 
             pic[i]=getImage(getCodeBase(),"tom"+i+".jpg");  
         }
       mythread=new Thread(this);
       startPlay=new Button("开始播放");
       stopPlay=new Button("暂停播放");
       continuePlay=new Button("继续播放");
       startPlay.addActionListener(this);
       stopPlay.addActionListener(this);
       continuePlay.addActionListener(this);
       add(startPlay);
       add(stopPlay);
       add(continuePlay);
   }
 public void actionPerformed(ActionEvent e)
   {
     if(e.getSource()==startPlay)
       {
          if(!(mythread.isAlive()))
           {
              mythread=new Thread(this);
              mythread.start();   
           }
       }
      else if(e.getSource()==stopPlay)
       {
          move=false;
       }
      else if(e.getSource()==continuePlay)
       {
          move=true;
          resumeThread();   
       }
   }
   public void run()
   {  
      for(count=0;count<number;count++)
        {  
           repaint();
           try{ 
                 mythread.sleep(800);
              }
           catch(InterruptedException e){}
           while(move==false)  
           {
             try{
                  hangThread();   
                }
             catch(InterruptedException e1)
                {
                }
           }
       }
      if(count>=number)
       {
          repaint();
       }
   } 
   public synchronized void  hangThread() throws InterruptedException
   {
      wait();  
   }
   public synchronized void  resumeThread()
   {
      notifyAll();
   }
   public void paint(Graphics g)
   {  
      if(count<number&&(pic[count])!=null)
        g.drawImage(pic[count],10,10,120,80,this);
      if(count>=number)
        {
          g.drawString("播放完毕",60,160);
        }
   }
}