I have opportunity to study either JAVA or PYTHON.
But I can't decide which to choose. I am already well versed with C++.
Can you plz tell which one is better with our experience.
This is a really relative questions and there is no "right" answer. 
I personally would go with Python but I already took multiple Java classes. Python is fun and interesting but Java has been around for a while and isn't going anywhere any time soon.
Which to choose Python or java