Не работает MouseListener

import java.awt.BasicStroke;
import java.awt.Color;
import java.awt.Dimension;
import java.awt.GradientPaint;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.event.MouseEvent;
import java.awt.event.MouseListener;
import javax.swing.JPanel;
import java.awt.geom.Rectangle2D;
import java.util.Random;
 
public class MyPanel extends JPanel implements MouseListener
{
        @Override
        public void paintComponent(Graphics g)
        {
            Random randomGenerator = new Random();
            
            super.paintComponent(g);
            Graphics2D g2 = (Graphics2D) g;
            Rectangle2D r = new Rectangle2D.Double(10,10,350,215);
            g2.setPaint(new GradientPaint(10,55, new Color(randomGenerator.nextInt(256),randomGenerator.nextInt(256),randomGenerator.nextInt(256)), 
                                          200, 55, new Color(randomGenerator.nextInt(256),randomGenerator.nextInt(256),randomGenerator.nextInt(256))));
            g2.fill(r);
            g2.setStroke(new BasicStroke(3.0f));
            g2.setPaint(Color.black);
            g2.draw(r);
        }
        
        @Override
        public Dimension getPreferredSize()
        {
            return new Dimension(400,320);
        }
        
        public MyPanel()
        {     
            addMouseListener(this);
        }
 
    @Override
    public void mouseClicked(MouseEvent arg0) 
    {
        this.repaint();
    }
 
    @Override
    public void mousePressed(MouseEvent arg0) {
        throw new UnsupportedOperationException("Not supported yet.");
    }
 
    @Override
    public void mouseReleased(MouseEvent arg0) {
        throw new UnsupportedOperationException("Not supported yet.");
    }
 
    @Override
    public void mouseEntered(MouseEvent arg0) {
        throw new UnsupportedOperationException("Not supported yet.");
    }
 
    @Override
    public void mouseExited(MouseEvent arg0) {
        throw new UnsupportedOperationException("Not supported yet."); 
    }
}