java 实现音乐播放器的简单实例

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<strsongnames.length;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<strsongnames.length;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();
  }

}

如有疑问请留言或者到本站社区交流讨论，感谢阅读，希望通过本文能帮助到大家，谢谢大家对本站的支持！