Mastering Functional Programming with Lambda Expressions in Java 8

Java 8 introduced functional programming concepts to the language with the introduction of lambda expressions and functional interfaces. With the rise in popularity of functional programming, it is essential to understand how to use these new features to write cleaner and more efficient code. In this article, we will dive deep into the world of functional programming with lambda expressions and explore how they can be used in Java 8.

What are Lambda Expressions?

Lambda expressions are anonymous functions that can be passed around as arguments to methods or stored in variables. In simple terms, they are a way of writing functions as expressions rather than classes. Lambda expressions are a fundamental part of functional programming, which is a programming paradigm that emphasizes the use of functions to solve problems.

Syntax of Lambda Expressions:

Lambda expressions consist of three parts: the parameter list, the arrow operator, and the body. The parameter list is a comma-separated list of parameters enclosed in parentheses. The arrow operator separates the parameter list from the body of the expression. The body of the expression is the code that gets executed when the expression is called.

Here is an example of a simple lambda expression that adds two integers:

Functional Interfaces: