還有我用jmf來(lái)實(shí)現(xiàn)簡(jiǎn)單的mp3播放也會(huì)出現(xiàn)找不到主類(lèi)的情況代碼如下package com.gml.jmf;import javax.media.*;import java.io.File;import java.io.IOException;import java.net.URL;public class SimpleAudioPlayer {?private Player audioPlayer = null;?public SimpleAudioPlayer(URL url) throws IOException,?NoPlayerException,?CannotRealizeException {?audioPlayer = Manager.createRealizedPlayer(url);?}?public SimpleAudioPlayer(File file) throws IOException,?NoPlayerException,?CannotRealizeException {?//this(file.toURL());??audioPlayer = Manager.createRealizedPlayer(file.toURL());?}?public void play() {??audioPlayer.start();??}??public void stop() {??audioPlayer.stop();??audioPlayer.close();??}??public static void main(String[] args) {???File audioFile = new File("E:/KuGou/Sam Smith-Writing's On The Wall.mp3");???if(!audioFile.exists()){????try {?????audioFile.createNewFile();????} catch (IOException e) {?????// TODO Auto-generated catch block?????e.printStackTrace();????}???}???try {????SimpleAudioPlayer player = new SimpleAudioPlayer(audioFile);????player.play();????//player.stop();???} catch (NoPlayerException e) {????// TODO Auto-generated catch block????System.out.println("沒(méi)有播放器");????e.printStackTrace();???} catch (CannotRealizeException e) {????// TODO Auto-generated catch block????System.out.println("不能實(shí)現(xiàn)這個(gè)");????e.printStackTrace();???} catch (IOException e) {????// TODO Auto-generated catch block????e.printStackTrace();???}??}}運(yùn)行結(jié)果為：錯(cuò)誤: 找不到或無(wú)法加載主類(lèi) com.gml.jmf.SimpleAudioPlayer