Java 8 in Action: Lambdas, Streams, and functional-style programming

While the term "lambda expression" may sound abstract and academic, Java 8 Lambdas can have a big impact on every day programming. In simplest terms, a lambda expression is a function—a bit of code—that can be passed to another method as an argument. Thus, a requirement can be changed 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 programmers write concise, maintainable code that scales easily and performs well on multicore architectures.

Java 8 in Action: Lambdas, Streams, and functional-style programming

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 and then introduces the Stream API, showing how it can make collections-related code radically easier to understand and maintain. It looks at new FP-oriented design patterns with Java 8 for code reuse, code readability, exception handling, data manipulation, and concurrency and concludes with a quick survey of useful functional features in Scala.

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