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A quick look at the types of software developed with Java should shed some light on its usage statistics.
At 52%, web services are the most popular sphere where Java is used according to the results of the State of the Developer Ecosystem 2020.
―It’s surprising to see Java so prevalent in Business intelligence / Data Science / Machine Learning, as you’d think this would be the realm of Python.
―The others are less surprising, as the backend in web services is often Java, and it makes sense for business applications to be written in Java as they will need to work with the backend and the databases too.