Functional Java

ThoughtFlow Solutions inc.

Functional Java: A Guide to Lambdas and Functional Programming in Java 8 (English Edition)

O'Reilly UK Ltd.

Functional Programming in Java: Harnessing the Power of Java 8 Lambda Expressions

Java Functional Programming: Hands-On (Complete Java course : from ZERO to professional) (English Edition)

O'Reilly Media

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

Manning Publications

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

O'Reilly Media

Functional Programming for Java Developers      

O'Reilly Media

Java 8 Lambdas                                  

Pragmatic Bookshelf

Functional Programming in Java: Harness the Power of Streams and Lambda Expressions (English Edition)

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

Java Functional Programming :Play with Stream and Lambda with industry best practices (Java programming :from ZERO to HERO) (English Edition)