How to implement a java interface in c++?

[tsuraan]

> No. Just add the "native" keyword to your methods in the java class like
> this:
>
> ====CppImplementation.java========================
> public class CppImplementation implements JavaInterface
> {
>     public native void doIt():
> }
> =====================================
>
> Then you add a *.cpp file containing a normal C++ method implementation:
>
> #include "CppImplementation.h"
>
> void
> CppImplementation::doIt()
> {
>   // Do something
> }
>
>
> The needed header file can be generated with gcjh.

This really looks a lot like
$ cat CppImplementation.h
class CppImplementation : public JavaInterface
{
    public:
      void doIt():
}

Are there plans in the pipe for allowing this?  It seems like a
pre-processor run could go through and check if c++ classes are
extending java ones, and do some parsing work to re-phrase them to be
java files.  Multiple inheritance wouldn't work that way, but for
simple things it seems like it could be done.  Will it be?