I reccently stumbled upon a nice framework you’ll love if you ever have to work with native code. Before this framework, if you needed to call native code, you would use JNI. JNI uses a proved but complex and error-prone process. First thing first, you write your Java classes like always. But for methods you want to delegate to native code, you use the native keyword and do not provide an implementation. Then, you call a JDK-provided executable named javah.