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Manning Publications: First class functions in Java 8

Java developers have heard a lot about functional-style programming - particularly with Java 8's addition of lambda expressions.

"First-class functions in Java 8" is a 12 minute video tutorial from Java 8 in Action: Lambdas, Streams, and functional-style programming by Raoul-Gabriel Urma, Mario Fusco and Alan Mycroft.

This video introduces method references and lambda expressions, the mechanisms Java 8 provides to pass a behavior as an argument to a method.

To save 38% on this or any other Manning books, just enter vturma01 in the Promotional Code box when you check out at manning.com.

While the term "lambda expression" may sound abstract and academic, Java 8 Lambdas can have a big impact on how you program every day. In simplest terms, a lambda expression is a function—a bit of code—that you can pass to another method as an argument. Thus, you can cope with changing requirements by using a behavior, represented by a lambda, as a parameter. Java 8's functional programming features, like lambdas and the new Stream API that enables a cleaner way to iterate through collections, can help you write concise, maintainable code that scales easily and performs well on multicore architectures. Java 8 in Action is a clearly-written guide to Java 8 lambdas and functional programming in Java. It begins with a practical introduction to the structure and benefits of lambda expressions in real-world Java code. The book then introduces the Stream API and shows how it can make collections-related code radically easier to understand and maintain. Along the way, you'll discover new FP-oriented design patterns with Java 8 for code reuse, code readability, exception handling, data manipulation, and concurrency. For developers also exploring other functional languages on the JVM, the book concludes with a quick survey of useful functional features in Scala and Clojure.

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