In this book, you will discover how the seemingly
minor changes that introduce lambda expressions make this possible. You will learn
how lambda expressions enable you to write a Java function in a single line of code,
and how to use this capability to program the new Stream API, condensing verbose
collection processing code into simple and readable stream programs. Studying the
mechanisms that create and consume streams will lead to an analysis of their performance
and enable you to judge when to invoke the parallel execution features of the
API.