[Quickfixj-users] 100% Java vs the QuickFIX C++ JNI Wrapper

[Ted G. <tg...@Co...>]

I'm confused about something on the main website.   It says that QuickFIX/J
is 100% Java, but it also talks about "Compatibility with QuickFIX C++ Java
Native Wrapper API".  The section on QuickFIXJ logging says, "QuickFIX/J is
based on the QuickFIX C++ JNI API"

What does the JNI API provide, and when should I use it?

Any explanation or pointers to resources appreciated.

Thanks,
Ted