How to listen a keyboard all the time?

I don't you can do it in Java unless you app is in focus. Maybe someone else knows of a way.

> My program must know, that some button is pushed.> When some person play in some game, my program must> run in background. When this person push button F1,> my program must do something. How do this?What actually do you want it to do?

> It must shoot screen (I know, how do this).Elvis-fashion?~

> It must shoot screen (I know, how do this).Oh another online poker hand odd calculator. Just what the world needs...Anyway nobody cares what you want your program to do. It isn't relevent. JNI. That's relevent.