With the recent advancements in technology and the increasing demand for better, more efficient code, the concept of functional programming has become more and more popular in today’s programming world.

Java is a language that has been around for decades, so it’s only natural that Java developers would want to incorporate functional concepts into their code.

The Java Consumer Functional Interface is a great way for developers to do just that. The Java Consumer Functional Interface is a type of interface that is used to define a single abstract method, allowing developers to pass an argument of a certain type to a lambda expression or method reference.

This type of interface allows developers to use functional programming elements in their code, such as predefined functions, anonymous functions, and more, while still maintaining the object-oriented structure of Java.

With this type of interface, developers can write efficient code that is easy to understand and debug, making it a great addition to any Java-based development project.

What is a Consumer Interface ?

A functional interface is an interface that contains only one abstract method.

void accept(T t)

And only one default method

default Consumer<T>	andThen(Consumer<? super T> after)

They are used extensively in Java 8 in the form of Lambda expressions.

In this blog post, we will take a look at how to create a Java Consumer functional interface and provide some examples of its usage.