Autohotkey is another one of those scripting languages. ::F4:: Send {Alt down}{F4}{Alt up} is so much simpler than whatever I would have to do with Java to remap keys. Same with stuff like WinActivate (window title) and MsgBox "hello world". It does get complicated like the OP says pretty quickly, with match modes and conditionals and stuff, but you can go years using it without getting any deeper.