anim1.java

刘艺编著的java教程的课本习题加例题代码 很有用哦！

import java.awt.*;
import java.awt.event.*;
import java.applet.Applet;

public class Anim1 extends Applet implements Runnable{
   int frameNumber=-1;
   final int number=10;
   Thread animthread;
   Image[] pic=new Image[number]; 
   Dimension bufDimension;
   Image bufImage;
   Graphics bufGraphics;      
   
   public void init(){
     for (int i=1; i<=number; i++)
      pic[i-1] = getImage( getCodeBase(), "T"+i+".gif" ); 
   }

   public void start(){
     animthread=new Thread(this);
     animthread.start();
   }

   public void stop(){
     animthread= null;
     bufGraphics=null;
     bufImage=null;
   }

   public void run(){
     Thread currentThread=Thread.currentThread();
     while(currentThread==animthread){
          frameNumber++;
          repaint();
          try{ animthread.sleep(300);  
          }
          catch(InterruptedException e) {
             break;
          }
      }
   }

   public void paint( Graphics g )  {
      Dimension d=getSize();
      if ((bufGraphics==null)||(d.width!=bufDimension.width)||(d.height!=bufDimension.height)){
        bufDimension=d;
        bufImage=createImage(d.width,d.height);
        bufGraphics=bufImage.getGraphics();
      }
      bufGraphics.setColor(getBackground());
      bufGraphics.fillRect(0,0,d.width,d.height);
      bufGraphics.drawImage( pic[frameNumber%10], 10, 10,  this); 
      g.drawImage( bufImage, 10, 10,  this);   
   }
}