Is there any good Java reference?

Question

Java

I started learning Java and was wondering if there is any good Java reference? On the Internet, I could not find anything more or less convenient, only textbooks, but a textbook can hardly be used as a reference.
For example, PHP has an official website php.net, where all the functions, all the "bolts" and "cogs" of this language are described in detail. With any question, you can go to this site and find the answer. If something similar exists in Java, then I beg you to share the links. Thank you in advance!

Answer 1

Java also has an official site where everything is described - https://docs.oracle.com/en/java/index.html True, it is less friendly to a beginner.

Answer 2

I think you are looking for this .