How fast you learned Java using this application?

Question

How long did it taken​ you - to learn Java language basics before you created your first application? Please, specify how many time you spend in average on each learning session also.

Answer 1

I only did the tests until there was no more...then i quickly went through the Threads and files section since o alteady knew java. Now if you are wondering how much time you spend learning the basics and essentials of java in this app it shouldn't take more than 3 weeks but that depends on you.
Also this App doesn't cover some stuff like reflexion