同上

show code

import sun.audio.*;

import java.io.*;

class Sound

{

public Sound()

{

try {

FileInputStream fileau=new FileInputStream("back1.mid");

AudioStream as=new AudioStream(fileau);

AudioPlayer.player.start(as);

}

catch (Exception e) {}

}

} 这个好像没重复的

xjgycc， 这个不是重复不重复的问题，首先得有播放声音的效果，根据这段代码就可以播放声音了？在我这边根本不行。 我最近在写一个程序，里面要用到录音，对录音文件做时间段测量，当然也要有放音功能。等做好了，我在这里贴一下，你可以下载以后去看看。估计还得两个星期才可以完成。 好了，你这个帖子暂时就回答到这里。

用循环不行么？

这段代码我这是可以运行的，就是没循环的方法啊

建一个thread，run一下

?????????????

//try it
import javax.sound.sampled.AudioInputStream;
import
import javax.sound.sampled.AudioFileFormat;
import javax.sound.sampled.AudioFormat;
import javax.sound.sampled.TargetDataLine;
import javax.sound.sampled.SourceDataLine;
import javax.sound.sampled.AudioSystem;
import
import javax.sound.sampled.DataLine;
import javax.sound.sampled.LineUnavailableException;


public class Playback extends Thread //implements Runnable
{
  final int bufSize = 16384;
  SourceDataLine line;
  File file;
  String fileName = "untitled";
  AudioInputStream audioInputStream;
  long duration;
  
  public Playback(String strFilename)
  {
    file = new File(strFilename);
    setName("Playback");
  }
  
  private void shutDown(String message)
  {
    if (message != null)
    {
      System.err.println(message);
    }
  }

  public void run()
  {
    // reload the file if loaded by file
    if (file != null)
    {
      createAudioInputStream(file);
    }
   
    // make sure we have something to play
    if (audioInputStream == null)
    {
      shutDown("No loaded audio to play back");
      return;
    }
   
    // get an AudioInputStream of the desired format for playback
    AudioFormat format = audioInputStream.getFormat();
    AudioInputStream playbackInputStream = AudioSystem.getAudioInputStream(format, audioInputStream);

    if (playbackInputStream == null)
    {
      shutDown("Unable to convert stream of format " + audioInputStream + " to format " + format);
      return;
    }

    // define the required attributes for our line,
    // and make sure a compatible line is supported.
    DataLine.Info info = new DataLine.Info(SourceDataLine.class, format);
    if (!AudioSystem.isLineSupported(info))
    {
      shutDown("Line matching " + info + " not supported.");
      return;
    }

    // get and open the source data line for playback.
    try
    {
      line = (SourceDataLine) AudioSystem.getLine(info);
      line.open(format, bufSize);
    }
    catch (LineUnavailableException ex)
    {
      shutDown("Unable to open the line: " + ex);
      return;
    }

    // play back the captured audio data
    int frameSizeInBytes = format.getFrameSize();
    int bufferLengthInFrames = line.getBufferSize() / 8;
    int bufferLengthInBytes = bufferLengthInFrames * frameSizeInBytes;
    byte[] data = new byte[bufferLengthInBytes];
    int numBytesRead = 0;

    // start the source data line
    line.start();
    while (this != null)
    {
      try
      {
        if ((numBytesRead = playbackInputStream.read(data)) == -1)
        {
          break;
        }
        int numBytesRemaining = numBytesRead;
        while (numBytesRemaining > 0 )
        {
          numBytesRemaining -= line.write(data, 0, numBytesRemaining);
        }
      }
      catch (Exception e)
      {
        shutDown("Error during playback: " + e);
        break;
      }
    }
   
    // we reached the end of the stream.  let the data play out, then
    // stop and close the line.
    if (this != null)
    {
      line.drain();
    }
    line.stop();
    line.close();
    line = null;
    shutDown(null);
  }
  public void createAudioInputStream(File file)
  {
    if (file != null && file.isFile())
    {
      try
      {
        audioInputStream = AudioSystem.getAudioInputStream(file);
        fileName = file.getName();
        duration =(long)((audioInputStream.getFrameLength() * 1000) /audioInputStream.getFormat().getFrameRate());
      }
      catch (Exception ex)
      {
       // reportStatus(ex.toString());
      }
    }
    else
    {
     // reportStatus("Audio file required.");
    }
  }
  public static void main(String [] args)
  {
    Playback pb = new Playback("untitled");  // here you should set your soundfilename
    pb.start();
    for(int i = 0; i<3; i++)      // for example you can repeat 3 times
    {
      while(pb.isAlive())
        ;
      if(pb == null)
      {
        pb = new Playback("untitled");
        pb.start();
      }
      else
        pb.run();
    }
  }
}