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//可以在你的j2me项目中,用这个类文件来播放声音

//使用方法://     source = new source("1.mid");//     source.start();//我的手机不支持mp3,^_^,没关系,我自己写个程序来放歌听,只是效果差点.import javax.microedition.media.*;import javax.microedition.media.player;import javax.microedition.media.control.volumecontrol;import java.io.*;/** * @author 钟伟海 * todo to change the template for this generated type comment go to * window - preferences - java - code style - code templates */public class source implements playerlistener{     player p;    volumecontrol volc;    /**     *  @param  filename 声音文件名称     */    public source(string filename) {         super();        // todo auto-generated constructor stub        //定义用来读取声音文件的inputstream        inputstream is = getclass().getresourceasstream(filename);        if(is == null){             system.out.println("error happens: inputstream not found " + filename);        }        try {             p = manager.createplayer(is, "audio/midi");            if(p == null){                 system.out.println("error handler happens: inputstream " + filename);            }else{                 p.addplayerlistener(this);                //"具现"播放器                p.realize();                //预取播放器                p.prefetch();                //将播放器设置为无限次播放                p.setloopcount(-1);                system.out.println("realized player: " + filename);            }        } catch (ioexception e) {             // todo auto-generated catch block            e.printstacktrace();            system.out.println(e);        } catch (mediaexception e) {             // todo auto-generated catch block            e.printstacktrace();            system.out.println(e);        }        //从播放器中获取音量控件        volc = (volumecontrol)p.getcontrol("volumecontrol");    }    /**关闭播放器     */    public void destroy(){         if(p != null){             p.close();        }    }    /**     * 从"媒体当前播放到的时刻"开始播放     */    public void start(){         if(p != null){             try {                 p.start();            } catch (mediaexception e) {                 // todo auto-generated catch block                e.printstacktrace();                system.out.println(e);            }        }    }    /**     * 停止当前播放器，注意当调用stop时     * 播放器不会重绕到开头     */    public void stop(){         if(p != null && p.getstate() == player.started){             try {                 p.stop();                system.out.println("the player stoped here:" + p.getmediatime());            } catch (mediaexception e) {                 // todo auto-generated catch block                e.printstacktrace();                system.out.println(e);            }        }    }    /**     * 将媒体当前播放到的时刻设置为负值     * 使媒体重绕到开头位置开始播放     */    public void rewind(){         if(p != null & p.getstate() == player.prefetched){             try {                 p.setmediatime(-1);                p.start();            } catch (mediaexception e) {                 // todo auto-generated catch block                e.printstacktrace();                system.out.println(e);            }        }    }    /**更新播放器的音量     * @param level     * @return     */    public int setlevel(int level){         return volc.setlevel(level);    }    /** 响应playerlistener接口的预定义标准事件     * @see javax.microedition.media.playerlistener#playerupdate(javax.microedition.media.player, java.lang.string, java.lang.object)     */    public void playerupdate(player p, string event, object eventdata){         // todo auto-generated method stub        if(event == started){             system.out.println("mysound player started");        }else if(event == closed){             system.out.println("mysound player closed");        }else if(event == end_of_media){             system.out.println("mysound player end_of_media");        }else if(event == error){             system.out.println("mysound player error");        }else if(event == volume_changed){             system.out.println("mysound player volume_changed");        }else if(event == duration_updated){             system.out.println("mysound player duration_updated");        }    }}

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