What Is Android Kotlin

Android Apps

Android Kotlin is a programming language that has gained popularity among developers in recent years. As an avid programmer myself, I have had the opportunity to explore Kotlin and its capabilities extensively. In this article, I will take you on a deep dive into what Android Kotlin is, its features, and why it is worth considering as a language for Android app development.

Introduction to Android Kotlin

Android Kotlin is a statically-typed programming language developed by JetBrains, the same company that created the IntelliJ IDEA IDE. It was officially announced as a first-class language for Android development by Google in 2017. Kotlin is fully interoperable with Java, meaning that existing Java code can be easily converted to Kotlin and vice versa.

One of the reasons why Kotlin gained popularity so quickly is its conciseness. It allows developers to write clean and concise code while maintaining readability. The syntax of Kotlin is more expressive and less verbose compared to Java, resulting in fewer lines of code. This makes it easier to understand and maintain the codebase.

Another significant advantage of Kotlin is its null safety. Kotlin’s type system helps to eliminate the dreaded NullPointerExceptions, a common issue in Java development. It achieves this by distinguishing nullable and non-nullable types in the language. This feature alone can save developers countless hours of debugging and troubleshooting.

Features of Android Kotlin

Kotlin includes a multitude of features that make it a powerful language for Android app development. Let’s take a look at some of these features:

1. Coroutines

Coroutines in Kotlin provide a lightweight and efficient way to write asynchronous code. They allow developers to write asynchronous code in a sequential and linear manner without the need for callbacks or complex threading APIs. This makes it easier to handle background tasks and perform long-running operations on Android without blocking the main thread.

2. Extension Functions

Extension functions in Kotlin allow developers to add new functions to existing classes without modifying their source code. This feature is especially useful when working with external libraries or APIs, as it enables developers to extend the functionality of existing classes without subclassing or modifying the original code.

3. Data Classes

Data classes in Kotlin provide a concise way to define and work with data. By simply adding the “data” keyword before a class declaration, Kotlin automatically generates useful methods such as equals(), hashCode(), and toString(). This eliminates the need to write boilerplate code for simple data classes and improves developer productivity.

4. Smart Casts

Kotlin’s smart casts allow the compiler to automatically cast objects to a specific type when certain conditions are met. This eliminates the need for explicit type casting and reduces the chances of runtime errors. It also makes the code more readable and concise.

Why Choose Android Kotlin?

As an Android developer, choosing the right programming language for app development is crucial. Here are a few reasons why you should consider Android Kotlin:

  • Productivity: Kotlin’s concise syntax and features like extension functions and data classes can significantly improve developer productivity. It allows you to write code faster and with fewer errors.
  • Interoperability: Kotlin is fully interoperable with Java, which means you can seamlessly integrate Kotlin code with existing Java codebases. It also allows you to gradually migrate from Java to Kotlin without rewriting the entire codebase.
  • Null Safety: Kotlin’s null safety features help reduce the occurrence of null pointer exceptions, a common source of crashes in Android apps.
  • Coroutines: Kotlin’s coroutines provide a simple and efficient way to write asynchronous code, making it easier to handle network requests and other background tasks.


In conclusion, Android Kotlin is a powerful programming language that offers numerous advantages for Android app development. Its concise syntax, null safety features, and seamless interoperability with Java make it an excellent choice for both new and existing Android projects. If you’re an Android developer looking to boost your productivity and write cleaner code, I highly recommend giving Android Kotlin a try.