What should a junior java developer learn?

Question

Java

Good afternoon everyone!
I am a 3rd year student. I know Java at a very good level. I want to get a job in back-end development in the fall. Tell me, please, what technologies (and most importantly what literature on them) is worth studying.
PS I realized from the requirements for vacancies that I should learn SQL, HTML and CSS, but from which books?

Answer 1

programmers.stackexchange.com/questions/91629/best...