Making graphic components clickable

Question

Hi, new Java programmer here. I'd like to be able to draw rectangles into a JPanel and make them listen for mouseclicks. My only clue is that I need to descend them from a class that has an addActionListener method, like a button, but efforts so far haven't been successful.
Can anyone show me how to create a rectangle object that will react to mouse click events? Thanks very much in advance.

Answer 1

Working on JN_ 's advice I decided to have a go at it. Hope this helps:
import javax.swing.*;
import java.awt.event.*;
import java.awt.*;
public class Test
     public static void main(String[] args) throws Exception
          new Test();
     Test()
          JFrame frame = new JFrame();
          frame.setContentPane(getPanel());
          frame.setSize(300,300);
          frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
          frame.setVisible(true);
     private JPanel getPanel()
          MyPanel panel = new MyPanel();
          return panel;
class MyPanel extends JPanel
     Rectangle r = new Rectangle(10,10,100,100);
     Color col = Color.BLUE;
     MyPanel()
          // enable this JPanel to receive mouse events
          enableEvents(AWTEvent.MOUSE_EVENT_MASK);
     protected void processMouseEvent(MouseEvent e)
          // check if it is a mouse click
          if (e.getID() == MouseEvent.MOUSE_CLICKED)
               if (r.contains(e.getX(), e.getY()))
                    if (col.equals(Color.BLUE))
                         System.out.println("green");
                         col = Color.GREEN;
                    else
                         System.out.println("blue");
                         col = Color.BLUE;
               repaint(); // indirectly calls paintComponent()
     protected void paintComponent(Graphics g)
          g.setColor(col);
          g.fillRect(r.x, r.y, r.width, r.height);
}