Consumer : Functional Interface Java 8

Introduction

In this tutorial we will look at the use of Consumer a functional interface introduced in java 8.

Refer The video Tutorial for detail

 

Use Case 

Consumer is a functional interface which is used to modify value based on some data.The sample code is shown below.

//return type is void Consumer<Integer> consumer=new Consumer<Integer>() { @Override public void accept(Integer i) { System.out.println("Nothing is returned in case of consumer"); } }

The above case will not return anything it will just consume some data to process it.

Conclusion 

In this tutorial we saw the use case of functional interface - Consumer. which is introduced in java 8 to modify data by consuming it in response.