It's possible in practice (at least more so than with Go), but it's highly unusual. Back when free Java became a thing, I used it at first to obtain a memory-safe TLS implementation. It worked out well, I think, but there is a strong tendency for the JVM to become the trunk of your application that holds everything together.

Depends on what is done, GraalVM supports native libraries.

https://www.graalvm.org/latest/reference-manual/native-image...

Then again, many times OS IPC is a much better option.