java实现播放背景音乐

package forGame;

import javax.sound.sampled.*;

import java.io.File;

//测试背景音乐播放（只能播放.wav文件）

public class Demo_2 {

   //需要传入要播放的文件

   void playMusic(File file)

   {

     try

     {

       //创建相当于音乐播放器的对象

       Clip clip = AudioSystem.getClip();

       //将传入的文件转成可播放的文件

       AudioInputStream audioInput = AudioSystem.getAudioInputStream(file);

       //播放器打开这个文件

       clip.open(audioInput);

       //clip.start();//只播放一次

       //循环播放

       clip.loop(Clip.LOOP_CONTINUOUSLY);

     } catch (Exception ex){

       ex.printStackTrace();

     }

     //死循环不让主程序结束（swing可不用）

     /*

       while(true){

       }

     */

   }

}

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;

   //照片数组

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

   //要绘制动态图片中的那张

   private BufferedImage image;

   //背景音乐

   private File bgm;

   //播放音乐类对象

   private Demo_2 demo_2 = new Demo_2();

   //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 ];

     bgm = new File( "src\\music\\bgm.wav" );

   }

   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();

     //播放背景音乐

     demo_2.playMusic(bgm);

   }

   //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();

   }

}