JEP 454 : Foreign Function & Memory API

JEP 454: Foreign Function & Memory APIopenjdk.org

This file is a tiny “Java calls C” demo using the Foreign Function & Memory (FFM) API:

• It finds the native functionstrlen from the system C library.

• It builds a Java handle for it (so Java knows how to call it and what types it expects).

• It allocates a native string () in a safe, temporary memory scope. "Hello FFM"

• It calls on that native string and prints the length, then automatically cleans up the native memory when done. strlen