jnr-ffi

From the README example, you can define a Java interface like LibC and call native functions directly without writing any C/C++ JNI code, significantly reducing development time.

The LibraryLoader API allows dynamic loading of native libraries with minimal setup, as shown in the example where loading libc is straightforward with a single line of code.

JNR-FFI provides mappings for common C data types, such as int for C int and String for const char*, ensuring type-safe interactions with native code based on the interface definitions.

It facilitates calling native libraries across different operating systems without platform-specific JNI code, making it ideal for cross-platform Java applications as implied by its runtime loading.