The Spring framework is the most ubiquitous Java framework today and the easiest way to solve many problems. At some point, however, developers start to feel Java applications just can't be any simpler because Java itself is not very simple. It is at this juncture that most people look for alternatives. For those, there is Spring Roo, the highly productive development framework for Spring users.

Software development today is embracing functional programming (FP), whether it’s to write concurrent programs or to manage Big Data. Where does that leave Java developers? This concise book offers a pragmatic, approachable introduction to FP for Java developers or anyone who uses an object-oriented language. Using exercises in each chapter, you'll learn how to apply FP principles to your Java code.