Can Java Sound be used to control the system volume?

Question

Java Sound offers FloatControl instances for various sound line functionality, and both a MASTER_GAIN & VOLUME control type.

Can these controls be

Answer 1

try this it wont disappoint you.... we can modify upper example accordingly.

import javax.sound.sampled.AudioSystem;
import javax.sound.sampled.FloatControl;
import javax.sound.sampled.Line;
import javax.sound.sampled.LineUnavailableException;
import javax.sound.sampled.Mixer;
import javax.swing.BoxLayout;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JProgressBar;

public class SoundMeter {

JFrame j;

public SoundMeter() {
    j = new JFrame("SoundMeter");
    j.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    j.setLayout(new BoxLayout(j.getContentPane(), BoxLayout.Y_AXIS));
    printMixersDetails();
    j.setVisible(true);
}
public void printMixersDetails(){
    javax.sound.sampled.Mixer.Info[] mixers = AudioSystem.getMixerInfo();
    System.out.println("There are " + mixers.length + " mixer info objects");  
    for(int i=0;i