Changer la couleur de la forme de dessin spécifique lorsque je clique dessus AWT

import java.awt.*;
import java.awt.event.*;
import java.awt.geom.*;

public class DessinFrame {
    public static void main(String... args) {
        Frame frame = new Frame();
        frame.setSize(600, 400);
        frame.setLocationRelativeTo(null);
        frame.add(new DessinContainer(
                new Ellipse2D.Double(108, 110, 200, 200),
                new Ellipse2D.Double(160, 150, 20, 20),
                new Ellipse2D.Double(240, 150, 20, 20),
                new Rectangle2D.Double(160, 220, 100, 40)));
        frame.setVisible(true);
        frame.addWindowListener(new WindowAdapter(){
            @Override
            public void windowClosing(WindowEvent e) {
                frame.dispose();
            }
        });
    }
}

class DessinContainer extends Container {
    private static final long serialVersionUID = 1L;

    private static final Color[] availableColors = {
            Color.BLACK,
            Color.BLUE,
            Color.CYAN,
            Color.DARK_GRAY,
            Color.GRAY,
            Color.GREEN,
            Color.LIGHT_GRAY,
            Color.MAGENTA,
            Color.ORANGE,
            Color.PINK,
            Color.RED,
            Color.WHITE,
            Color.YELLOW
    };

    private final DessinComponent[] components;

    public DessinContainer(Shape... shapes) {
        setLayout(null);
        setLocation(0, 0);
        setSize(Short.MAX_VALUE, Short.MAX_VALUE);

        components = new DessinComponent[shapes.length];
        for (int i = 0; i < shapes.length; i++) {
            components[i] = new DessinComponent(shapes[i], availableColors[0]);
            add(components[i]);
        }

        addMouseListener(new MouseAdapter(){
            @Override
            public void mouseClicked(MouseEvent e) {
                for (DessinComponent component : components) {
                    if (component.contains(e.getPoint())) {
                        Color randomColor = availableColors[(int) (Math.random() * availableColors.length)];
                        component.setColor(randomColor);
                    }
                }
            }
        });
    }
}

class DessinComponent extends Component {
    private static final long serialVersionUID = 1L;

    private Shape shape;
    private Color color;

    public DessinComponent(Shape shape, Color color) {
        this.shape = shape;
        this.color = color;
        setLocation(0, 0);
        setSize(Short.MAX_VALUE, Short.MAX_VALUE);
    }

    public void setColor(Color color) {
        this.color = color;
        repaint();
    }

    @Override
    public boolean contains(Point point) {
        return shape.contains(point);
    }

    @Override
    public void paint(Graphics g) {
        Graphics2D g2 = (Graphics2D) g;
        g2.setColor(color);
        g2.draw(shape);
    }
}

import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.Container;
import java.awt.Dimension;
import java.awt.EventQueue;
import java.awt.Frame;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.Shape;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.ComponentListener;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;
import java.awt.event.MouseListener;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;
import java.awt.event.WindowListener;
import java.awt.geom.Area;
import java.awt.geom.Ellipse2D;
import java.awt.geom.Rectangle2D;
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
import javax.swing.JButton;
import javax.swing.JComboBox;
import javax.swing.JComponent;
import javax.swing.JFrame;
import javax.swing.JPanel;

public class Dialogue {

    public static void main(String[] args) {
        new Dialogue();
    }

    public Dialogue(){
        EventQueue.invokeLater(new Runnable(){
            @Override
            public void run(){
                JFrame frame = new JFrame();
                frame.add(new Panel(Color.RED));
                frame.pack();
                frame.setLocationRelativeTo(null);
                frame.setVisible(true);

                frame.addWindowListener((WindowListener) new WindowAdapter(){
                    @Override
                    public void windowClosing(WindowEvent windowEvent) {
                        System.exit(0);
                    }
                });
               
            }
        });
    }

    public class Panel extends JPanel implements ActionListener,MouseListener {
        
    	private String shapeName;
    	private int x=10,y=20;
        private int shape;
        private Color color;

    	public Panel(Color color) {
            //super(new BorderLayout());
            this.color = color;
            String[] petStrings = { "Cercle", "Rectangle", "Ligne" };
     
            //Create the combo box, select the item at index 4.
            //Indices start at 0, so 4 specifies the pig.
            JComboBox petList = new JComboBox(petStrings);
            petList.setSelectedIndex(2);
            petList.addActionListener(this);
            //Lay out the demo.
            
            add(petList);
            this.addMouseListener(new MouseAdapter(){
                @Override
                public void mouseClicked(MouseEvent e) {
                	int currentX = e.getX();
                    int currentY = e.getY();
                    System.out.print("am mouse clicked");
            		if(shapeName.equals("Ligne")) {
                    	shape = 1;
                    }
                    else if(shapeName.equals("Rectangle")) {
                    	shape = 2;
                    }
                    else if(shapeName.equals("Cercle")) {
                    	shape = 3;
                    }
                    repaint();
                      
               }
            });
            
        }
    	public void paint(Graphics gui) {
            super.paint(gui);
            Graphics2D g2d = (Graphics2D) gui.create();
            g2d.setColor(color);
            System.out.print("am Paint method");
            if(shape == 1)
            	g2d.drawLine(x, y, x+20,y+30);
            if(shape == 2)
            	g2d.drawRect(x,y,30,50);
            if(shape == 3)
            	g2d.drawOval(x,y,30,30);
            g2d.dispose();
        }
    	
     
        /** Listens to the combo box. */
        public void actionPerformed(ActionEvent e) {
        	System.out.print("am action listener");
            JComboBox cb = (JComboBox)e.getSource();
            shapeName = (String)cb.getSelectedItem();
            
        }
     
    
        	
    	@Override
    	public void mousePressed(MouseEvent e) {
    		
    	}
    	@Override
    	public void mouseReleased(MouseEvent e) {
    		// TODO Auto-generated method stub
    		
    	}
    	@Override
    	public void mouseEntered(MouseEvent e) {
    		// TODO Auto-generated method stub
    		
    	}
    	@Override
    	public void mouseExited(MouseEvent e) {
    		// TODO Auto-generated method stub
    		
    	}
    	@Override
    	public void mouseClicked(MouseEvent e) {
    		// TODO Auto-generated method stub
    		
    	}
    }
}