//播放声音的类
public class PlaySounds extends Thread {
 
    private String filename;
    public PlaySounds(String wavfile) {
     
        filename = System.getProperty("user.dir")+wavfile;
    }
    public void run() {
 
        File soundFile = new File(filename);
 
        AudioInputStream audioInputStream = null;
        try {
            audioInputStream = AudioSystem.getAudioInputStream(soundFile);
        } catch (Exception e1) {
            e1.printStackTrace();
            return;
        }
 
        AudioFormat format = audioInputStream.getFormat();
        SourceDataLine auline = null;
        DataLine.Info info = new DataLine.Info(SourceDataLine.class, format);
 
        try {
            auline = (SourceDataLine) AudioSystem.getLine(info);
            auline.open(format);
        } catch (Exception e) {
            e.printStackTrace();
            return;
        }
 
        auline.start();
        int nBytesRead = 0;
        //这是缓冲
        byte[] abData = new byte[512];
 
        try {
            while (nBytesRead != -1) {
                nBytesRead = audioInputStream.read(abData, 0, abData.length);
                if (nBytesRead >= 0)
                    auline.write(abData, 0, nBytesRead);
            }
        } catch (IOException e) {
            e.printStackTrace();
            return;
        } finally {
            auline.drain();
            auline.close();
        }
 
    }  
}