When you compare Java vs. Python application development in terms of simplicity, conciseness, security and performance, Java comes out on top in every category.

Java devs looking to explore or work in data science may need another language up their sleeves. Python and R are common Java alternatives for data science.

Programming language Python's popularity: Ahead of Java for first time but still trailing C Python is now the second most popular language in the nearly 20-year-old Tiobe index.