java循环播放_求解答关于java小游戏怎么循环播放BGM

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package com.tarena.shoot;

import java.awt.Font;

import java.awt.Graphics;

import java.awt.event.MouseAdapter;

import java.awt.event.MouseEvent;

import java.awt.image.BufferedImage;

import java.io.IOException;

import java.util.Arrays;

import java.util.Random;

import java.util.Timer;

import java.util.TimerTask;

import javax.imageio.ImageIO;

import javax.swing.JFrame;

import javax.swing.JPanel;

public class ShootGame extends JPanel {

public static final int WIDTH=400;//固定窗口大小

public static final int HEIGHT=700;

public static BufferedImage background;//导入图片用BufferedImage

public static BufferedImage start;

public static BufferedImage airplane;

public static BufferedImage bee;

public static BufferedImage bullet;

public static BufferedImage hero1;

public static BufferedImage hero2;

public static BufferedImage pause;

public static BufferedImage gameover;

public Hero hero=new Hero();

public Flyer[] flyers={};

public Bullet[] bullets={};

private int state=START;

public static final int START=0;

public static final int RUNNING=1;

public static final int PAUSE=2;

public static final int GAME_OVER=3;

static{//静态代码块，将图片全部加载到内存方法区

try {

background=ImageIO.read(ShootGame.class.getResource("background.png"));

start=ImageIO.read(ShootGame.class.getResource("start.png"));

airplane=ImageIO.read(ShootGame.class.getResource("airplane.png"));

bee=ImageIO.read(ShootGame.class.getResource("bee.png"));

bullet=ImageIO.read(ShootGame.class.getResource("bullet.png"));

hero1=ImageIO.read(ShootGame.class.getResource("hero1.png"));

hero2=ImageIO.read(ShootGame.class.getResource("hero2.png"));

pause=ImageIO.read(ShootGame.class.getResource("pause.png"));

gameover=ImageIO.read(ShootGame.class.getResource("gameover.png"));

} catch (IOException e) {

// TODO Auto-generated catch block

e.printStackTrace();

}

}

public static void main(String[] args) {

JFrame frame=new JFrame("Fly");//创建窗体对象

frame.setSize(WIDTH, HEIGHT);//设置窗体大小

frame.setAlwaysOnTop(true);//设置窗体总是在最上

frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

frame.setLocationRelativeTo(null);//设置窗体出现位置居中

ShootGame game=new ShootGame();

frame.add(game);//将背景面板对象嵌入到窗体对象中

frame.setVisible(true);//自动调用paint方法

game.action();

我想在主程序中加入循环播放的bgm，求吧友帮帮忙，教教我