import java.awt.event.*;
import javax.swing.*;
class Program extends JFrame {
	JLabel cimke;
	Program() {
		cimke = new JLabel("valami");
		cimke.setBounds(50, 50, 100, 30);
		cimke.addMouseWheelListener(new CimkeEgerKezeles());

		add(cimke);
		setLayout(null);
		setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
		setSize(400, 300);
		setVisible(true);
	}
	class CimkeEgerKezeles implements MouseWheelListener {
		public void mouseWheelMoved(MouseWheelEvent e) {
			int a = e.getWheelRotation();
			setTitle(Integer.toString(a));
		}
	}
	public static void main(String[] argv) {
		new Program();
	}
}