[[wikipedia:OS_X|OS X]] is a [[wikipedia:FreeBSD|FreeBSD]] clone that powers large computers created by [[Apple]]. The small ones (think of iPhone and iPad) are powered by [[iOS]].

[[Java]] for [[OS X]] is provided by [[Oracle]]. [[Java]] for [[iOS]] is also available (thanks to [[RoboVM]]). The best way to get started with multiplatform UI in [[Java]] is to use [[DukeScript]].