EMV terminals. No Java involved.
> As a famous quote states, it’s ok if your code has an uptime of 3 minutes until the first bug if the bomb explodes in 2
Look, first you commented that it's not possible for nontrivial or non-networked devices, now you're trivialising code that, if wrong, directly killed people!
All through the 80s, 90s and 2000s (and even now, believe it or not), the world was filled with millions and millions of devices programmed in C, and yet you did not live a life where all the devices around you routinely crashed.
Crs, Microwaves, security systems... they didn't routinely crash even though they were written in C.