🚀 go-pugleaf

On Wed, 23 Jun 1999 23:19:47 -0500, Mike Schoonover
<mike@folsomvillage.com> wrote:

>The JNI specs are pretty clear about the ability of the native code to
>create and access Java objects, but can the Java code create and access
>C++ native objects?

Not directly. You have to provide native methods (written in C++, for
example) that do the work.

>Can I call a C++ function that will create the object and pass a pointer
>back to the Java side?  

Yes, but it has to be in the form of a native method, and conform to
the JNI naming conventions, etc.

>If so, where does this object exist - within the scope of the Java
>program or in some etheral memory space?

All DLLs loaded by a process (java.exe in this case) are loaded into
that process's address space. So, any object created via a native
method exists within the context of the process that invoked the
native method.

>Can Java call any function defined as part of a C++ class?

Not without wrapping the functions in native methods.

-Steve