If you are a Java programmer, you might be interested in Jython, the Java implementation of Python. In that case, I have bad news for you. Unfortunately, Jython runs on the Java Virtual Machine and cannot access NumPy, because NumPy's modules are mostly written in C. You could say that Jython and Python are two totally different worlds, although, they do implement the same specification. There are some workarounds for this that are discussed in NumPy Cookbook, Ivan Idris, Packt Publishing.