JCPP Project

[John Rose]

For C++ bridging, look at:
  https://github.com/bytedeco/javacpp

A great C bridging solution is:
  https://github.com/jnr

For discussions of something better than JNI for the JDK, I offer this:
  https://blogs.oracle.com/jrose/entry/the_isthmus_in_the_vm

Project Panama will eventually create standard ways to work with C++ APIs in Java syntax.

For the reverse direction (using Java APIs in C++ syntax) I don't have any suggestions.

It is unlikely that the JDK will supply tools for programming in C++, even if the APIs somehow relate to Java.

— John