I would like to have some JNI code malloc a block of memory and pass it back to my Java code (in the form of a jlong), so that future calls to other JNI functions can pass this pointer along for ...

A vender I'm working with provided a static library (.a) and two header files. I'm purely a Java guy, and we'll eventually get to a pure Java library, but in the meantime I'd like to test using ...