It is always important to discuss programming language use with your computer science students. If they really like Computer Science, then they probably need to see some real world data regarding language use and job opportunities.

This article https://codeburst.io/10-top-programming-languages-in-2019-for-developers-a2921798d652 has some interested information.

One would assume Java and Python were at the top of the list, but JavaScript may surprise a bit. Learning Java and Python would seem to put a student in great position.