[java] Dual input/control interface?

My game will have dual input interface like most games which means that my game is recieving commands from 2 different ways, mouse and keyboard. I use numpad for moving and mouse for getting items and looking objects + ranged attacks. This works well until I press button/any other component, after this, keyboard input is muted. Of course I don''t have anything cool looking ready, umm, not even engine, but I thought that it would be great to take this issue before going any deeper... Time comes, time goes and I only am.