Call a Java method from Rust code about jni-rs

[dmitry-timofeev]

There is an integration test that calls various types of Java methods: https://github.com/prevoty/jni-rs/blob/master/tests/java_integers.rs

It shows how to start a JVM from Rust, how to attach the current native thread, and call a Java method. If Java calls Rust, the native thread is already attached and you can just do the latter.

[fasihrana]

I've written a sample to do this. fasihrana/rustjni_example.

Hopefully this will help someone looking for a clear cut way.

My suggestion would be to add the pub fn jvm() -> &'static Arc<JavaVM> found in the util/mod.rs file, to the actual API, taking in the arguments to start the jvm.

[fasihrana]

Closing this issue since I have a working example.