How I can detect the shape inside of the jpanel and use it with another button

Question

The class

 class MyComponent extends JComponent {
       public void paint(Graphics g) {

               g.fillRect(30, 30, 100, 100);

       }

    }

Jbutton is performed action on this

jButton2.addActionListener(new ActionListener() {
    public void actionPerformed(ActionEvent e) {

         jPanel4.add(new MyComponent());
         addComponent(new MyComponent());
      }
    });
 jButton1.addActionListener(new ActionListener() {
    public void actionPerformed(ActionEvent e) {

         jPanel4.add(new MyComponent1());
         addComponent(new MyComponent1());
      }
    });

I have some other Jbutton action as well . Now I want to detect the shape when it is in the panel. Then I want to perform some action on the panel current shape.

jButton5.addActionListener(new ActionListener() {
    public void actionPerformed(ActionEvent e) {
        if(e.getSource()==jButton1)
        {
            jPanel4.removeAll();
            jPanel4.updateUI();
            jPanel4.add(new MyComponent11());
             addComponent(new MyComponent11());
        }


      }
    });

But This code is not detecting the shape. Any solution for this please

Answer 1

I wrote a general implementation of this using Area, which you can find here. Specifically, the main method in AreaManager is informative as to how it all works together.

If you're just looking to detect mouse clicks in the bounds (30,30,100,100) you can implement that more easily in a regular MouseListener / Adapter. But it sounds like you're interested in the full solution, or?