j2me工具类：声音播放类SoundUtil
用法：
将需要播放的音乐都罗列在name，type数组中，需要的时候像下面这样调用：
SoundUtil sound=new SoundUtil();
sound.start(musicIndex);
import java.io.IOException;import java.io.InputStream;import javax.microedition.media.Manager;import javax.microedition.media.MediaException;import javax.microedition.media.Player;import javax.microedition.media.control.ToneControl;import javax.microedition.media.control.VolumeControl;public class SoundUtil {String[] name={"rank001.mid","rank002.mid","rank003.mid"};String[] type={"audio/midi","audio/midi","audio/midi"};//audio/x-wavPlayer p=null;VolumeControl vc;int level=50;SoundUtil(){}private void init(int index){InputStream is=this.getClass().getResourceAsStream("/"+name[index]);try {p=Manager.createPlayer(is, type[index]);p.realize();p.prefetch();p.setMediaTime(0);p.setLoopCount(-1);vc=(VolumeControl)p.getControl("VolumeControl");if(vc!=null)vc.setLevel(getLevel());} catch (IOException e) {// TODO Auto-generated catch blocke.printStackTrace();} catch (MediaException e) {// TODO Auto-generated catch blocke.printStackTrace();}}public void play(int index){close();init(index);start();}public void start(){if(p!=null){try {p.start();} catch (MediaException e) {// TODO Auto-generated catch blocke.printStackTrace();}}}public void stop(){if(p!=null){try {p.stop();} catch (MediaException e) {// TODO Auto-generated catch blocke.printStackTrace();}}}public void rePlay(int index){play(index);}public void close(){if(p!=null){p.close();p=null;}}//增加、减小音量public void controlVolume(boolean isHigher) {if (vc != null) {if (isHigher) {//响level += 20;if (level > 100)level = 100;} else {level -= 20;if (level < 0)level = 0;}vc.setLevel(level);}}//静音\非静音public void quitVolume(boolean isQuit) {if (vc != null){if(isQuit){vc.setLevel(0);}else{vc.setLevel(level);}}}public int getLevel(){return level;}//简单的播放一个音调public void playTone(){try {Manager.playTone(ToneControl.C4,1000,100);} catch (MediaException e) {// TODO Auto-generated catch blocke.printStackTrace();}}}