How do I use lambda expressions with functional interfaces in Java?

How do I use lambda expressions with functional interfaces in Java?

Lambda expressions are a way to provide clear and concise syntax for writing anonymous methods in Java. They can be used with functional interfaces, which are interfaces that have a single abstract method. For example, you can use a lambda expression to implement the Runnable interface.

Can you give me an example of a lambda expression with a functional interface?

Sure! Here's a simple example:

@FunctionalInterface
interface MyFunctionalInterface {
    void display(String message);
}

public class Main {
    public static void main(String[] args) {
        MyFunctionalInterface myFunc = (message) -> System.out.println(message);
        myFunc.display("Hello, Lambda Expressions!");
    }
}

This code defines a functional interface and uses a lambda expression to implement its method.

What are the benefits of using lambda expressions?

Lambda expressions make your code more readable and concise. They help eliminate boilerplate code, especially when working with collections and streams. Additionally, they enable functional programming techniques in Java.