FPC (Free Pascal Compiler) can do cross-compiling into other OSes, including for Android. In looking at this again, the solution might be to use Pascal. So switching the language doesn't bring any benefits at all. The only thing that would change in comparison from now is the rebuilding of the AutoHotkey core in Java - which is more work than making AHKs current core modular and targeting different OSes. So in the end we would rewrite AutoHotkeys core in Java and built the entire featureset into a dll/whatever linux uses for libraries which will will be shipped with the distribution !specific! for your OS. Also we have to write a C library for every different OS. So in the end we would write our Hotkey code and most of the language features in C/C++ for Java to use in. We would have to get an API that would provide it or built our own - in C/C++ or some other language that Java can use that can also implement super global hotkeys. Java has no built in API to create Hotkeys for the entire system.

Free for ios instal AutoHotkey 2.0.3