Functional Interfaces

Essential Java

Introduction In Java 8+, a functional interface is an interface that has just one abstract method (aside from the methods of Object). See JLS §9.8. Functional Interfaces .

Understand functional interfaces

Java Best Practices

In Java 8 the @FunctionalInterface annotation was introduced, allowing API developers to designate that a particular class is intended for use in lambda expressions. It is not necessary that a class h...

Understand functional interfaces

Java Best Practices

In Java 8 the @FunctionalInterface annotation was introduced, allowing API developers to designate that a particular class is intended for use in lambda expressions. It is not necessary that a class ...

Java Functional Interfaces For the Impatient: Part 1

Level Up Coding

In this article, we will learn about Java Functional Interfaces with coding examples. This is just part one of the series as I will try to cover the main functional interfaces which come under Packag...

Functional Interface vs @FunctionalInterface

Javarevisited

Introduction The functional interface is an interface that contains only one abstract method . You can use lambda expressions to create instances of this interface.

The Functional API

TensorFlow Guide

Complete guide to the functional API.

Interfaces

Introduction to Programming Using Java

Section 5.7 Interfaces Some object-oriented programming languages, such as C++, allow a class to extend two or more superclasses. This is called multiple inheritance . In the illustration below, for e...

Interfaces

Learn Java

Interfaces in Java There are a number of situations in software engineering when it is important for disparate groups of programmers to agree to a "contract" that spells out how their software intera...

Java 8 — Functional Interface — the Feature That You Must Know

Javarevisited

Hello friends, this article is a continuation of the Java-8 Features series. We will go through the functional Interface in this article. You can refer to the other Java-8 articles that are already co...

Interfaces

Codecademy

An interface is a type that defines a set of methods and properties that a class can implement. It provides a way to define a contract between the implementing class and the calling code. An interface...

The 3 Ways Of Passing Functions in Functional Programming

Level Up Coding

Hands-on article about passing lover-order functions as inputs, outputs, or parameters. Continue reading on Level Up Coding

Interfaces

Codecademy

An interface is composed of set of method signatures. These method signatures define the input and return values of which a data type or struct can conform to. In order to implement an interface, the ...