What is the Java? ALL of what Oleg supplied?

I would be surprised if it is no more than communication between the black box file(s) and your code, so embed the JAVA into the C++ or whatever you're using. And how much is the communication between FM module and your code like the socket for devicelink?

In IL2 series, they use the FM modules directly or by this java inteface?

I hope the new FM will be up to the expected quality of the IL2 FM engine.