Just Announced - "Learn Spring Security OAuth":
Design patterns implemented in Java
All Algorithms implemented in Java
Source code of the chapters of the book 3D Game Development with LWJGL 3
A list of useful Java frameworks, libraries, software and hello worlds examples
Source code for the Datalogics C++, Java, and .NET interface of the Adobe PDF Library
FizzBuzz Enterprise Edition is a no-nonsense implementation of FizzBuzz made by serious businessmen for serious business purposes.
Java Interview Questions and Answers