Audiosystem.write not returning?

[B_Tank88]

Hello,

I am doing a task which involves screenshot and sound capture, but I am having problems with AudioSystem.write, in run(). The method doesn't seem to return whether I have a mic plugged in or not, and a blank .wav file seems to be written. Can someone help?

Here is my output:

1. Entered main function
2. Entered Capture class
Writing file: 2012-01-31_11-56-47.jpg
Write Successful: 2012-01-31_11-56-47.jpg
3. Entered main_soundcapture
4. Audio/file formats initialised
5. TargetDataline grabbed
Press ENTER to start the recording.

Started recording
Try audiosystem.write

Please ignore the block comments, I don't know what happened there.

import java.io.File;
import java.io.IOException;
import java.text.DateFormat;
import java.text.SimpleDateFormat;
import java.util.Date;

import javax.sound.sampled.AudioFileFormat;
import javax.sound.sampled.AudioFormat;
import javax.sound.sampled.AudioInputStream;
import javax.sound.sampled.AudioSystem;
import javax.sound.sampled.DataLine;
import javax.sound.sampled.LineUnavailableException;
import javax.sound.sampled.TargetDataLine;

public class SoundCapture {
	
	TargetDataLine		m_line;
	AudioFileFormat.Type	m_targetType;
	AudioInputStream	m_audioInputStream;
	File			m_outputFile;
	DateFormat dateFormat = new SimpleDateFormat("yyyy-MM-dd_HH-mm-ss");
	
	public void main_soundcapture() {
		
		System.out.println("3. Entered main_soundcapture");
		
/*		initialise the audio data format; */
	    Date date = new Date();
		String strFilename = dateFormat.format(date);
		File	outputFile = new File(strFilename + ".wav");
		
		AudioFormat	audioFormat = new AudioFormat(
				AudioFormat.Encoding.PCM_SIGNED,
				44100.0F, 16, 2, 4, 44100.0F, false);
		
/*		initialise audio file type;*/
		AudioFileFormat.Type	targetType = AudioFileFormat.Type.WAVE;
		
		System.out.println("4. Audio/file formats initialised");
		
/*		initialise new target data line, if requesting the line was successful then open the target data line;*/	
		
		DataLine.Info	info = new DataLine.Info(TargetDataLine.class, audioFormat);
		TargetDataLine	targetDataLine = null;
		try
		{
			targetDataLine = (TargetDataLine) AudioSystem.getLine(info);
			targetDataLine.open(audioFormat);
		}
		catch (LineUnavailableException e)
		{
			out("unable to get a recording line");
			e.printStackTrace();
			System.exit(1);
		}
		
		System.out.println("5. TargetDataline grabbed");
		
		m_line = targetDataLine;
		m_audioInputStream = new AudioInputStream(targetDataLine);
		m_targetType = targetType;
		m_outputFile = outputFile;
		
		out("Press ENTER to start the recording.");
		try
		{
			System.in.read();
		}
		catch (IOException e)
		{
			e.printStackTrace();
		}
		
		start();
		out("Recording...");
		
		out("Press ENTER to stop the recording.");
		try
		{
			System.in.read();
		}
		catch (IOException e)
		{
			e.printStackTrace();
		}

		/* Here, the recording is actually stopped.
		 */
		stopRecording();
		out("Recording stopped.");
		
	}
	
	private static void out(String strMessage)
	{
		System.out.println(strMessage);
	}
	
	public void start()
	{
		System.out.println("Started recording");
		m_line.start();
		run();
	}
	
	public void stopRecording()
	{
		m_line.stop();
		m_line.close();
	}
	
	// CRASHES HERE
	
	public void run()
	{
			try
			{
				System.out.println("Try audiosystem.write");
				AudioSystem.write(
					m_audioInputStream,
					m_targetType,
					m_outputFile);
			}
			catch (IOException e)
			{
				System.out.println("Catch IOException");
				e.printStackTrace();
			}
			System.out.println("Recording complete");
	}
}