Things on this page are fragmentary and immature notes/thoughts of the author. Please read with your own judgement!
https://github.com/drrb/java-rust-example
https://users.rust-lang.org/t/ffi-java-call-a-rust-dynamic-library/19924
https://docs.rs/jni/0.14.0/jni/
https://stackoverflow.com/questions/30258427/calling-rust-from-java
https://github.com/java-native-access/jna