Java Functional Programming

Pragmatic Bookshelf

Functional Programming in Java: Harness the Power of Streams and Lambda Expressions

Manning Publications

Modern Java in Action: Lambdas, streams, functional and reactive programming

Manning Publications

Functional Programming in Java: How functional techniques improve your Java programs

Independently published

Java Functional Programming: Master Lambdas, Streams, and Method References to Write Cleaner, More Maintainable Code

O'Reilly Media

A Functional Approach to Java: Augmenting Object-Oriented Java Code with Functional Principles

Independently published

Functional Programming with Java: An In-Depth Exploration and Implementation Guide

Manning Publications

Functional Programming in Scala                  

Independently published

Java Streams and Lambdas: Functional Programming Techniques in Java

Java Functional Programming Made Simple: A Practical Guide with Examples (The Beginner's Guide to Programming Book 8) (English Edition)

O'Reilly Media

Java 8 Lambdas: Functional programming for the masses