I already know java, What coding language should I learn?

Answer 1

Maybe you can try to learn advance Java and take part in challenges
https://www.sololearn.com/discuss/580291/?ref=app
https://www.sololearn.com/discuss/1262798/?ref=app

Answer 2

Learn what you want for your next goals, or maybe do what Muhammad posted.

Answer 3

learn c++ after java...very useful for faster execution.and then learn python for data science and artificial intelligence which helps u cope up with the future...python is growing damn fast...instead of learning more languages mastering the languages u know....try to master 4 languages that will make u a best software engineer