JavaSoundRecorder.java

  
public class JavaSoundRecorder {
  
  long length;
   
  // format of audio file
  AudioFileFormat.Type fileType = AudioFileFormat.Type.WAVE;
   
  // the line from which audio data is captured
  TargetDataLine line;
   
  /**
   * Defines an audio format
   */
  AudioFormat getAudioFormat() {
      float sampleRate = 8000;
      int sampleSizeInBits = 8;
      int channels = 2;
      boolean signed = true;
      boolean bigEndian = true;
      AudioFormat format = new AudioFormat(sampleRate, sampleSizeInBits, channels, signed, bigEndian);
      return format;
  }
   
  /**
   * Captures the sound and record into a WAV file
   */
  void start( String path) {
    
      String finalPath = sketchPath() + "/" + path;
      
      File wavFile = new File(finalPath);
    
      System.out.println(finalPath);
    
      try {
          AudioFormat format = getAudioFormat();
          DataLine.Info info = new DataLine.Info(TargetDataLine.class, format);
   
          // checks if system supports the data line
          if (!AudioSystem.isLineSupported(info)) {
              System.out.println("Line not supported");
              System.exit(0);
          }
          line = (TargetDataLine) AudioSystem.getLine(info);
          line.open(format);
          line.start();   // start capturing
   
          println("Start capturing...");
   
          AudioInputStream ais = new AudioInputStream(line);
          
          length = ais.getFrameLength() * ais.getFormat().getFrameSize();
   
          println("Start recording...");
   
          // start recording
          AudioSystem.write(ais, fileType, wavFile); 
   
      } catch (LineUnavailableException ex) {
          ex.printStackTrace();
      } catch (IOException ioe) {
          ioe.printStackTrace();
      }
  }
   
  /**
   * Closes the target data line to finish capturing and recording
   */
  void finish() {
      println("Finished");
      line.stop();
      line.close();
  }

}

SaveSound.pde

import javax.sound.sampled.*;
import java.io.*;
import java.net.URLDecoder;
import java.net.URLEncoder;
import http.requests.*;
import java.util.concurrent.atomic.AtomicInteger;
int maxRecord = 0;

final JavaSoundRecorder recorder = new JavaSoundRecorder(); 
Thread thread;

boolean recording = false;

void setup()
{
}

void draw()
{
}

void mousePressed()
{
  println(" started ");
  recording = true;

  thread = new Thread(new Runnable() {
    public void run() {
      try {
        Thread.sleep(5000); // this is how long you'll record for

        recorder.finish();
        thread.join();
      } 
      catch (InterruptedException ex) {
        ex.printStackTrace();
      }
    }
  }
  );

  thread.start();
  // start recording
  recorder.start("test.wav");

  println(" OK " );
}