Mastering Functional (SAM) Interfaces in Kotlin: Write Cleaner & More Concise Code 🚀

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Kotlin is a modern programming language that enhances code readability and reduces boilerplate. One of its powerful features is Functional (SAM) Interfaces, which simplify working with interfaces that have a single abstract method (SAM).

In this article, we will explore what SAM interfaces are, why they are useful, and how you can use them effectively in Kotlin, along with practical examples.

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What is a Functional (SAM) Interface?

A Functional Interface (also known as a SAM interface) is an interface that has only one abstract method. It allows us to use lambda expressions instead of writing an entire class implementation.

It only accept one abstract function inside it , if your try to add more than one abstract function then it will give compile time error.

Example of a Functional Interface

fun interface Printer {
    fun printMessage(message…