java 实现音乐播放器的简单实例

实现效果图：

代码如下

package cn.hncu.games;

import java.applet.Applet;

import java.applet.AudioClip;

import java.awt.Color;

import java.awt.Font;

import java.awt.event.MouseAdapter;

import java.awt.event.MouseEvent;

import java.awt.event.MouseListener;

import java.io.File;

import java.net.URL;

import javax.swing.DefaultListModel;

import javax.swing.ImageIcon;

import javax.swing.JButton;

import javax.swing.JFrame;

import javax.swing.JLabel;

import javax.swing.JList;

import javax.swing.ListModel;

import javax.swing.event.ListSelectionEvent;

import javax.swing.event.ListSelectionListener;

public class MusicPlayer extends JFrame{

//显示(歌曲名称)播放状态的标签

JLabel songNameLabel = null;

//四个播放功能键按钮

JButton btnLast = null; //上一曲

JButton btnPlay = null; //播放/停止

JButton btnNext = null; //下一曲

JButton btnLoop = null; //循环

//歌曲列表

JList songsList = null;

AudioClip songs[] = null;

AudioClip currentSong = null;

int index=0; //当前歌曲在JList中的位置(序号)

//歌曲文件名数组---String

String[] strSongNames={ "song1.wav","song2.wav","song3.wav","song4.wav","song5.wav","song6.wav" };

final String DIR="songs\\";

//播放音乐的线程

Thread playerThread=null;

boolean isPlayOrStop = true;//true代表播放状态

boolean isLoop = false; //是否为循环状态

public MusicPlayer() {

super("音乐播放器");

setBounds(300, 50, 310, 500);

setDefaultCloseOperation(EXIT_ON_CLOSE);

setLayout(null);

//hello();

//显示(歌曲名称)播放状态的标签

songNameLabel = new JLabel();

Font songNameFont = new Font("黑体",Font.ITALIC,18);

songNameLabel.setFont(songNameFont);

songNameLabel.setText("我的音乐播放器");

songNameLabel.setBounds(10, 10, 300, 40);

getContentPane().add(songNameLabel);

//四个播放功能键按钮

btnLast = new JButton();

btnPlay = new JButton();

btnNext = new JButton();

btnLoop = new JButton();

//位置大小

btnLast.setBounds(10, 70, 50, 40);

btnPlay.setBounds(70, 70, 50, 40);

btnNext.setBounds(130, 70, 50, 40);

btnLoop.setBounds(190, 70, 50, 40);

//设置图片

btnLast.setIcon( new ImageIcon("images2/1.png"));

btnPlay.setIcon( new ImageIcon("images2/2.png"));

btnNext.setIcon( new ImageIcon("images2/3.png"));

btnLoop.setIcon( new ImageIcon("images2/4.png"));

//添加到框架

getContentPane().add(btnLast);

getContentPane().add(btnPlay);

getContentPane().add(btnNext);

getContentPane().add(btnLoop);

//添加监听

MyMouseListener mml = new MyMouseListener();

btnLast.addMouseListener(mml);

btnPlay.addMouseListener(mml);

btnNext.addMouseListener(mml);

btnLoop.addMouseListener(mml);

//歌曲列表的标题

JLabel listLabel = new JLabel("播放列表");

listLabel.setBounds(10, 120, 100, 30);

Font listLabelFont = new Font("黑体",Font.BOLD,16);

listLabel.setFont(listLabelFont);

getContentPane().add(listLabel);

//歌曲列表

/*

songsList = new JList();

songsList.setBounds(10, 150, 250, 300);

songsList.setBackground(Color.CYAN);

//把所有歌曲名逐个添加到List中

//songsList.setListData(strSongNames);

for(int i=0;i

DefaultListModel dm = (DefaultListModel)songsList.getModel();

dm.add(i,strSongNames[i]);

}

getContentPane().add(songsList);

*/

DefaultListModel lm = new DefaultListModel();

songsList = new JList(lm);

songsList.setBounds(10, 150, 250, 300);

songsList.setBackground(Color.CYAN);

//把所有歌曲名逐个添加到List中

//songsList.setListData(strSongNames);

songs = new AudioClip[strSongNames.length];

for(int i=0;i

lm.add(i,strSongNames[i]);

songs[i] = loadSound(strSongNames[i]);

}

getContentPane().add(songsList);

//lm.remove(3);

//对JList控件的监听技术实现

songsList.addListSelectionListener(new ListSelectionListener() {

@Override

public void valueChanged(ListSelectionEvent e) {

currentSong.stop();

index = songsList.getSelectedIndex();

isPlayOrStop = true;

playerThread = new Thread( new MusicRun() );

playerThread.start();

}

});

//单开一个线程，专用于播放音乐

playerThread = new Thread( new MusicRun() );

playerThread.start();

setVisible(true);

}

private AudioClip loadSound(String fileName) {

try {

URL url = new URL("file:songs\\"+fileName);

AudioClip au = Applet.newAudioClip(url);

return au;

} catch (Exception e) {

e.printStackTrace();

}

return null;

}

//讲解音乐播放的基本技术

private void hello() {

try {

File f = new File("songs\\song1.wav");

URL url = f.toURI().toURL();

//URL url = new URL("file:songs\\song1.wav");

AudioClip au = Applet.newAudioClip(url);

au.play();

//au.loop();

//au.stop();

} catch (Exception e) {

e.printStackTrace();

}

}

private class MyMouseListener extends MouseAdapter{

@Override

public void mouseClicked(MouseEvent e) {

JButton btn = (JButton) e.getSource();

currentSong.stop();

if(btn==btnPlay){

isPlayOrStop = !isPlayOrStop;

}else if(btn==btnLast){

index--;

if(index<0){

index = strSongNames.length-1;

}

//isPlayOrStop=true;

}else if(btn==btnNext){

index++;

index = index%strSongNames.length;

}else if(btn==btnLoop){

isLoop = !isLoop;

}

if(isPlayOrStop){//播放

playerThread = new Thread( new MusicRun() );

playerThread.start();

}else{//停止

songsList.setSelectedIndex(index);

songNameLabel.setText("停止播放:"+strSongNames[index]);

btnPlay.setIcon( new ImageIcon("images2/2.png"));

}

}

}

private class MusicRun implements Runnable{

@Override

public void run() {

currentSong = songs[index];

if(isLoop){

currentSong.loop();

songNameLabel.setText("循环播放:"+strSongNames[index]);

}

if (isPlayOrStop) {

currentSong.play();

}

//在播放列表中选定当前歌曲

songsList.setSelectedIndex(index);

//把播放按钮的图标切换成“停止”

btnPlay.setIcon( new ImageIcon("images2/5.png"));

if(!isLoop){

songNameLabel.setText("正在播放:"+strSongNames[index]);

}

}

}

public static void main(String[] args) {

new MusicPlayer();

}

}

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