Java 8 Function Interface Tutorial with Examples | Lambda Expression

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In this video tutorial, we will learn how to use Function functional interface with an example.

The Function is a functional interface introduced in Java 8; it takes an argument (object of type T) and returns an object (object of type R). The argument and output can be a different type.

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Very clear, concise, and useful examples and explanations, many thanks!

theresapan

Videos are really awesome, but its much better if you could remove duplicate videos from playlist.
Thank you for providing such great content.

shivashanker

Useful examples. Also cover other Java 8 functional interfaces with examples

javatechnology

Good example and also provide examples using collections

niranjanbasha

Repeating "
fazil mohamed' question, how your editor not showing error. Did you create your own generic, how?

AnupSingh

How to execute the below code

FunctionalInterface

public interface MyFirstFunctionalInterface

{

    public void firstWork();

    public String toString();                //Overridden from Object class

    public boolean equals(Object obj);        //Overridden from Object class

}

2. Which book are you referring in your entire Java website ?

DeepakLalchandaniProfile

what is difference between andThen and compose methods?

venkatasaisowjanya

Can you please give some insight on ConvertListToMap method?. Why the return type is <T, R> Map<T, R> instead of just Map.

fazilmes

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