Java8

This post is about measuring elapsed time in Java using a Stopwatch. We will over cover the Stopwatch from Google Guava and the Apache Commons lang.

Default methods in Java enable us to add new functionality to the interfaces of our libraries without breaking the existing implementations of the interface

A method reference is a reference to an existing method. When a lambda expression just calls an existing method, we can use a Method Reference.

A sequence of primitive int-valued elements supporting sequential and parallel and aggregate operations. It is an int primitive specialization of Stream.