import javax.swing.*;
import java.awt.*;
 
public class Ex1
{
    public static void main(String[] args)
    {
        JFrame fenetre = new JFrame();

        fenetre.setSize(520, 90);
        fenetre.setLocation(100, 100);
        fenetre.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

        Volume vol = new Volume();
        VolumeListener volListener = new VolumeListener(vol);

        fenetre.add(vol, BorderLayout.CENTER);
        fenetre.addMouseWheelListener(volListener);

        fenetre.setVisible(true);
    }
}