What is the best source to learn java?

Question

I'm currently learning C++ (basics); I know C(upto data structures); Now I'm about to encounter OOP in C++. However, many people recommended me to go with Java. So, my question was what are best courses, or books available for learning Java!?!

Answer 1

Rest in pieces sololearn, these questions.

Answer 2

of course, apart from sololearn;