Including the .cpp and .h files in a Processing .pde

I have an Arduino sketch for stepper motor which includes a .h and a .cpp file. Obviously I cannot use #include in Processing and initializing the objects are totally different than Arduino. Given that I do not understand Java, Can someone suggest a way to incorporate a c++ code in a Processing file?
You can find the files here (I have not coded them):
Files are here

Thanks

Can someone suggest a way to incorporate a c++ code in a Processing file?

It is NOT possible.

You can find the files here

No, I can't.

You could write a C++ interpreter in Java