Part 2 explores type dependency in the Java Collections API, in generics, and in lambda expressions. We’ll jump right in, so if you haven’t already read Part 1, I recommend starting there.

The Javadoc documentation for each field of the Collections class does not address why these warnings occur for the fields, but the documentation for each of the like-named methods does discuss this.

Donald Raab, creator of GS Collections, open sourced by Goldman Sachs in 2012, reveals the power of that framework, and how together with Lambda expressions, it sprinkles Java with some of the ...