Every function that is called must have a native keyword. This keyword tells the Java complier that the function is from another language. The implementation of the function is in the C file.

First previewed in Java 19 and delivered in Java 22, it introduces the Foreign Function & Memory (FFM) API, which is designed to address those limitations and usher in a new era of seamless native ...

At launch, Java was the only officially supported programming language for building distributable third-party Android software. That's starting to change as Google introduces new options.