What I heard was that they can have cold but not hot caffeine. Does that mean they can use Java only on well cooled computers? Or does java refer to a specific kind of coffee (that is not cold)? Well apparently Java is an island in Indonesia where Java coffee is grown. That would mean that Java could be cold brew and that they can so long as their computer is cool enough for it not to be considered hot. The exact definition of hot is tricky, though cold brew is typically served at refrigerated temperatures which would mean the computer would need sub-ambient cooling.

Tldr: they need a computer with sub-ambient cooling.