Right, but you should be doing analysis and choosing the right tool for the job. 9/10 or probably more Java projects never need to use FFI because of the sheer

Right, but you should be doing analysis and choosing the right tool for the job. 9/10 or probably more Java projects never need to use FFI because of the sheer size of the Java ecosystem. C# has always needed a better FFI story because its ecosystem is an order of magnitude smaller.