Keeping focus on a JFrame

[DAT64X]

I'm working on a gui that has a main overall JFrame that contains several JPanels, and the JPanels themselves have other components and stuff.  I'm trying to implement basic keylistener functionality such that when I press a keyboard key, I will print out a System.out message.  The problem is, the JFrame itself always seems to lose focus.  When I press the key that I setup, nothing happens.  I know there's a FocusManager in Swing, but I was wondering if there are any suggestions or tips on this issue.  I think the problem might be solved if I keep focus on the JFrame the whole time, but I'm not sure how to do that.  Any suggestions would be greatly appreciated.

--DAT