Manning's bestselling Java 8 book has been revised for Java 9! In Java 8 and 9 in Action, you'll build on your existing Java language skills with the newest features and techniques. After a practical introduction to lambdas using real-world Java code, you'll dive into the Streams API. Next, you'll discover event-driven reactive programming and see how the Java Module System (aka Jigsaw) will help change how you structure your code. This book also explains functional programming in Java, working with collections, and more.

"This is an excellent introduction to the newest features in Java 8 and 9. It provides clear and concise examples to help clarify how to use Java's newest features such as streams, lambda functions, and reactive streams."

~ Meredith Godar

"Hands on Java 8 and 9, simple and elegantly explained."

~ Deepak Bhaskaran

Raoul-Gabriel Urma is CEO and co-founder of Cambridge Spark, a leading learning community for data scientists and developers in UK. In addition, he is also Chairman and co-founder of Cambridge Coding Academy, a growing community of young coders and pre-university students. Raoul is author of the bestselling programming book "Java 8 in Action" which sold over 20,000 copies globally. Raoul completed a PhD in Computer Science at the University of Cambridge. In addition, he holds a MEng in Computer Science from Imperial College London and graduated with first class honours having won several prizes for technical innovation. Raoul has delivered over 100 technical talks at international conferences. He has worked for Google, eBay, Oracle, and Goldman Sachs. He is also a Fellow of the Royal Society of Arts.

Mario Fusco is a senior software engineer at Red Hat working on Drools, the JBoss rule engine. He created the open source library lambdaj, an internal Java DSL for manipulating collections in a functional way.

Alan Mycroft is Professor of Computer Science at the University of Cambridge, where he researches programming languages, their semantics, optimization and implementation. He is a co-founder and Trustee of the Raspberry Pi Foundation.