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Nulls and Null Safety in Kotlin🚫

Say Goodbye to NullPointerExceptions!

Android Dev Nexus
6 min readOct 5, 2024
Null Safety in Kotlin

Have you ever experienced that dreaded NullPointerException (NPE) in your code, causing everything to crash? 😱 If you’ve been programming in Java, you know this pain all too well. It’s one of the most common (and frustrating) errors developers face. But fear not, Kotlin has your back! Kotlin is designed to make your life easier by embracing null safetyright from the start. 🚀

In this article, we’ll dive into how Kotlin handles nulls, how it keeps you safe from NPEs, and the various tools it provides to deal with nullable types.

What Is a Null? 🤔

Sadly, we are not Talking about Knull from Marvel Comics.😂

Before we dive into Kotlin’s null safety, let’s quickly review what null is. In programming, null is a special value that represents nothing or no value. For example, if you have a variable that’s supposed to hold a string, but you haven’t assigned it anything yet, its value could be null.

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Android Dev Nexus
Android Dev Nexus

Written by Android Dev Nexus

Your friendly neighborhood developers working at PayPal, turning Android fundamentals into concepts you’ll actually understand.

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