The surveys I have seen of job postings indicate that Java is still the #1 language followed by things like JavaScript, SQL, C#, Python, C++, etc. Here’s an article from last year on the topic, https://www.techrepublic.com/article/the-10-most-in-demand-programming-languages-of-2018/. There is a plot from the end of 2017 that goes beyond the top 10 at https://stackify.com/popular-programming-languages-2018/.

The key point for me in this data is that even the most popular language is only in about 30% of the job postings. The #5 language, C#, is in about 15% of the job postings. There is no one single, dominant language. So we need to make sure that students are prepared to learn multiple languages with ease. It also means that saying “I teach X because it is used in industry.” is silly. Whatever a person might choose to fill in the X with, there is at least 70% of the industry that doesn’t use X. What is more, there are good odds that the usage of X will shift dramatically in the next 5–10 years. That further stresses that what matters is concepts across multiple languages and the ability to acquire new languages, not mastery of any particular language.