Functional Java: A Guide to Lambdas and Functional Programming in Java 8

Functional Java: A Guide to Lambdas and Functional Programming in Java 8 by M...

Java 8 in Action: Lambdas, streams, and functional-style programming by Urma

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

Java 8 Lambdas : Pragmatic Functional Programming (O'Reilly)