How to paint an invisible JFrame elsewhere?

Question

I want to paint the contents of a JFrame onto another frame. Currently, I only get it to work if the JFrame is visible.
Is there a way to paint a hidden JFrame?

Addi

Answer 1

I want to get the graphical contents of a frame without having to make the frame visible for the user

The Screen Image class should help. Although I think it will only work for the "content pane" of the frame and not the entire frame (with the title bar and borders) unless you use a decorated frame.