https://dzone.com/articles/learn-python-overtakes-learn-java I've seen companies making sincere enterprise-wide commitments to doing all data analysis in Python. There's no reason for quants and analysts to struggle with Java. I field one or two questions a week from folks pushing the in-house envelope on data acquisition. I also field questions on language basics. It's a very exciting thing. I'm glad I started down this road 15 years ago.