What you need is a speed bike that lets you switch to a mountain bike when you decide you need/want to go off the trail. That is, a "no code" or graphical or whatever whizz-bang tool that lets you drop into C++ or Python or Lisp or whatever when you need to.
And to do this, it needs to be better than JNI in Java. It needs to be able to have something better than a gouge-your-eyeballs-out-ugly syntax for interfacing to the "real" programming language.
And to do this, it needs to be better than JNI in Java. It needs to be able to have something better than a gouge-your-eyeballs-out-ugly syntax for interfacing to the "real" programming language.