How to get Frame Window activated

If somebody can help me - Thank you

I have a button on applet. When I click it (Action Listener) I suppose to get Frame Window on the screen being visible and activated(with focus in).It works when you click button first time or if you click button after this Frame Window was closed(Window Listener, ...windowClosing, ...dispose)
The problem is: if I iconofied this Frame Window and then click button again I what this Frame Window pop up on the screen, being visible and activated(with focus)

Any suggestions?

maripil