How do I remove an overidden mouseListener?

Question

I have a JInternalFrame, where I wanted to display a JOptionPane when my JTable was double clicked. I looked around in the internet and found that the only way of doing it was to override mousePressed() method and this is how I did it:

tblJobs.addMouseListener (new MouseAdapter() {
    @Override
    public void mousePressed (MouseEvent e) {
        JTable tbl = (JTable)e.getSource();
        int row = tbl.rowAtPoint(e.getPoint());

        if (e.getButton() == MouseEvent.BUTTON1 && row != -1) {
            if (e.getClickCount() == 2) {
                JOptionPane.showMessageDialog(null, "Double click detected");
            }
        }
    }
});

The thing is, I also have a button to hide the frame, and when the frame was hidden and re-shown, I found that upon double clicking my JTable, the JOptionPane got displayed twice. The number of times the JOptionPane got displayed seemed to increase along with the number of times I hid and show the frame. My guess is, the mouseListener got called again and again when I hide and re-show my frame. Is there a way of removing the mouseListener that was added in this way? Or is there another way to stop the JOptionPane from displaying more than once? And also, if what my code was stupid in any way, feel free to tell me! :) Thanks in advance!

Answer 1

How about setting a Boolean calss variable hidden = true when you hide, hidden = false when you unhide ?
Set the first line in mousePressed() to if(hidden) return;