How can I pass the parent to use in the JOptionPane that is inside a common method?

Question

I have a JFrame with 2 buttons.

Each of the buttons displays a dialog specific to that button: JDialog A and JDialog B . Each of these dialogs use a class with method M. Inside Method M, I display a JOptionPane .

I tried passing the dialogs as components, but that did not work. I can't use null in the JOptionPane since I need it on top.

How can I pass the parent dialog ( A or B ) to be used in the JOptionPane ?

Answer 1

I was able to fix my problem by reviewing the comments, especially from @Radiodef. The problem was that my object was getting corrupted by another thread so it only worked if I did not pass the object and hard-coded it instead.