Design patterns implemented in Java
Everything you need to know to get the job.
All Algorithms implemented in Java
Just Announced - "Learn Spring Security OAuth":
Modern Java - A Guide to Java 8
FizzBuzz Enterprise Edition is a no-nonsense implementation of FizzBuzz made by serious businessmen for serious business purposes.
MIT Deep Learning Book in PDF format (complete and parts) by Ian Goodfellow, Yoshua Bengio and Aaron Courville
LeetCode of algorithms with java solution(updating).
A list of useful Java frameworks, libraries, software and hello worlds examples