TRWTF is that Java Specification Request 1 (yes, THE very first one) targeted real-time: https://www.jcp.org/en/jsr/detail?id=1

Most software does. But, let's face it, it's not like C or C++ compilers should come with a manual saying "We strongly recommend using C for safety critical systems".

(MISRA-C and other odd dialects excepted)

Nope, there are even two vendors specialized in real-time Java based solutions.