Java programmer career

Question

What programming language should I learn to complement my Java programmer career?

Answer 1

My main goal is to work with mobile application, I'm taking a course on udemy and I have thought that in this area kotlin is increasing a lot.

Answer 2

What do you want to make?

Choose the goal (project) before the tools. Retool as the situation warrants. 🙂

(Random suggestion: You could pick up Haskell.)

Answer 3

Seems like a good choice. 🙂👍

Answer 4

First learn java then kotlin (which that's for Android)
for ios learn C# then swift