Setting the Volume of a Sampled Audio Player : Audio « Development « Java Tutorial

import javax.sound.sampled.AudioSystem;
import javax.sound.sampled.BooleanControl;
import javax.sound.sampled.Clip;
import javax.sound.sampled.DataLine;
import javax.sound.sampled.FloatControl;

public class Main {
  public static void main(String[] argv) throws Exception {
    DataLine.Info info = null;
    Clip clip = (Clip) AudioSystem.getLine(info);

    FloatControl gainControl = (FloatControl) clip
        .getControl(FloatControl.Type.MASTER_GAIN);
    double gain = .5D; // number between 0 and 1 (loudest)
    float dB = (float) (Math.log(gain) / Math.log(10.0) * 20.0);
    gainControl.setValue(dB);

    BooleanControl muteControl = (BooleanControl) clip
        .getControl(BooleanControl.Type.MUTE);
    muteControl.setValue(true);

    muteControl.setValue(false);

  }
}

6.50.Audio
	6.50.1.	Determining When a Sampled Audio Player Has Finished Playing
	6.50.2.	Setting the Volume of a Sampled Audio Player
	6.50.3.	Determining the Position of a Sampled Audio Player
	6.50.4.	Determining the Duration of a Sampled Audio File
	6.50.5.	Playing Streaming Sampled Audio
	6.50.6.	Loading and Playing Sampled Audio
	6.50.7.	Play an audio file from a JAR file
	6.50.8.	Determining the Encoding of a Sampled Audio File
	6.50.9.	Determining the File Format of a Sampled Audio File
	6.50.10.	Load image and sound from Jar file
	6.50.11.	A simple player for sampled sound files.
	6.50.12.	This is a simple program to record sounds and play them back
	6.50.13.	Capturing Audio with Java Sound API
	6.50.14.	Float Control Component
	6.50.15.	Make your own Java Media Player to play media files