javaは背景音楽を再生することを実現します。

package forGame;

import javax.sound.sampled.*;
import java.io.File;

//        （    .wav  ）
public class Demo_2 {
  //          
  void playMusic(File file)
  {
    try
    {
      //             
      Clip clip = AudioSystem.getClip();
      //              
      AudioInputStream audioInput = AudioSystem.getAudioInputStream(file);
      //         
      clip.open(audioInput);
      //clip.start();//     
      //    
      clip.loop(Clip.LOOP_CONTINUOUSLY);
    } catch(Exception ex){
      ex.printStackTrace();
    }
    //          （swing   ）
    /*
      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;

//    
public class Demo_1 extends JFrame{
  //  
  private BufferedImage bufferedImage;
  //    
  private int width;
  private int height;
  //    
  private BufferedImage[] images = new BufferedImage[4];
  //           
  private BufferedImage image;
  //    
  private File bgm;
  //       
  private Demo_2 demo_2 = new Demo_2();

  //   
  {
    if(bufferedImage == null){
      try {
        bufferedImage = ImageIO.read(new File("src\\image\\  .png"));
        for(int i = 1;i < images.length + 1;i ++)
          images[i - 1] = ImageIO.read(new File("src\\image\\     " + 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("    ");
    //    
    setSize(width,height);
    setLocationRelativeTo(null);
    setResizable(false);
    setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    setVisible(true);
    //    
    MyThread myThread = new MyThread();
    myThread.start();
    //      
    demo_2.playMusic(bgm);
  }

  //             
  @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);

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

    //          
    g.drawImage(image,0 ,0 , null);
  }

  private int num = 0;//images       
  //     
  private class MyThread extends Thread{
    @Override
    public void run() {
      while(true) {
        if(num <= 3) {
          image = images[num ++];
        }
        else
          num = 0;
        repaint();
        try {
          sleep(100);//  100      
        } catch (InterruptedException e) {
          e.printStackTrace();
        }
      }
    }
  }

  public static void main(String[] args) {
    new Demo_1();
  }
}