I think, most of MacOS and Linux PCs are with OpenJDK. But not 100% that a binary based on OpenJDK 8 is compatible with OpenJDK 11. That part it would be good to check.
Windows users are with Oracle Java SE. Regarding my code, if I remember right, I automated it with CMAKE on Mac, but didn’t check it properly on Linux systems.
Regarding Julia use cases, the main question for me - is it possible to run these Java containers in parallel inside the same Java VM. And, also, be sure in data isolation and crash safety.