java实现动态图片效果

package forGame;

import javax.imageio.ImageIO;

import javax.swing.*;

import java.awt.*;

import java.awt.image.BufferedImage;

import java.io.File;

import java.io.IOException;

//动态效果

public class Demo_1 extends JFrame{

  //背景

  private BufferedImage bufferedImage;

  //窗体大小

  private int width;

  private int height;

  //要绘制的动态照片数组

  private BufferedImage[] images = new BufferedImage[ 4 ];

  //要绘制动态图中的那张

  private BufferedImage image;

  //初始化

  {

   if (bufferedImage == null ){

    try {

     bufferedImage = ImageIO.read( new File( "src\\image\\背景.png" ));

     for ( int i = 1 ;i < images.length + 1 ;i ++)

      images[i - 1 ] = ImageIO.read( new File( "src\\image\\大飞机爆炸" + i + ".png" ));

    } catch (IOException e) {

     e.printStackTrace();

    }

   }

   width = bufferedImage.getWidth();

   height = bufferedImage.getHeight();

   image = images[ 0 ];

  }

  public Demo_1(){

   super ( "动态测试" );

   //设置窗口

   setSize(width,height);

   setLocationRelativeTo( null );

   setResizable( false );

   setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

   setVisible( true );

   //启动线程

   MyThread myThread = new MyThread();

   myThread.start();

  }

  //双缓冲绘制解决图片闪烁问题

  @Override

  public void paint(Graphics g) {

   Image image = this .createImage(width,height);

   Graphics gImage = image.getGraphics();

   gImage.setColor(gImage.getColor());

   gImage.fillRect( 0 , 0 ,width,height);

   super .paint(gImage);

   //绘制背景

   gImage.drawImage(bufferedImage, 0 , 0 , null );

   //绘制动态图片

   gImage.drawImage( this .image, 0 , 100 , null );

   //最后绘制缓冲后的图片

   g.drawImage(image, 0 , 0 , null );

  }

  private int num = 0 ; //images数组内图片索引

  //线程内部类

  private class MyThread extends Thread{

   @Override

   public void run() {

    while ( true ) {

     if (num <= 3 ) {

      image = images[num ++];

     }

     else

      num = 0 ;

     repaint();

     try {

      sleep( 100 ); //每隔100毫秒重绘一次

     } catch (InterruptedException e) {

      e.printStackTrace();

     }

    }

   }

  }

  public static void main(String[] args) {

   new Demo_1();

  }

}