title: How to call a java function from python/numpy?
body: <p>it is clear to me how to extend Python with C++, but what if I want to write a function in Java to be used with numpy? </p>
  
  <p>Here is a simple scenario: I want to compute the average of a numpy array using a Java class. How do I pass the numpy vector to the Java class and gather the result?</p>
  
  <p>Thanks for any help!</p>