// PCM 8000 KHz, 8 bits, 1 channel (mono), unsigned, little endian
AudioFormat format = new AudioFormat(8000, 8, 1, false, false);

OutputAudioLine line = new MidpOutputAudioLine();

byte[] audioBuffer;

try {

    // Open the line and configure it to accept audio data with
    // a given format.
    line.open(format, bufferSize);

    line.start();
    
    while(!stopped) {
 
        //Obtains the number of bytes of data that can be written 
        // to the buffer without blocking.
        int available = line.available();

        // Get/Generate audio buffer with corresponding size.
        audioBuffer = generator.generate(available);
                
        // Write data to the line
        line.write(audioBuffer, 0, audioBuffer.length);
    }

    // Don't forget to drain the line, i.e push audio data inside
    // the buffer to the line. 
    line.drain();

    // Close line for releasing ressources. 
    line.close();

} catch (IOException e) {
	// ...
}