Unsurprisingly, Python dominated among big data developers that use Apache Spark analytics engine, with 66% citing Python as the language they use with Spark, followed by Java at 34% and Scala at 11%.

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 has a lot going for it, but it's not the top language for data science. Java professionals may want to familiarize themselves with Python or R for data science workflows.

The demand for JavaScript, Java, and Python skills is consistent with previous years, the report notes. Among development frameworks, Node.js, React, and .NET Core proved to be the best-known and ...