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Which programming language is better for Android development: Kotlin or Java

Android app development is one of the most popular and rewarding fields in the world of software development. With over 2 billion active users, it’s no wonder that developers want to create apps for this platform. In this article, we will explore the two most popular programming languages used for Android development: Kotlin and Java.

Kotlin vs Java: A Brief Overview

Before we dive into the world of Kotlin and Java, let’s first understand what they are.

Java is an object-oriented programming language that was developed by Sun Microsystems (now owned by Oracle) in the 1990s. It is the primary language for developing Android apps and has been around since the beginning of the platform.

Kotlin, on the other hand, is a newer programming language that was developed by JetBrains in 2011. It was designed to be more concise, expressive, and interoperable with Java than its predecessor. Kotlin has become an official language for Android app development since Android 21 and is becoming increasingly popular among developers.

Kotlin vs Java: A Comparison

Now that we have a brief overview of the two languages let’s compare them in terms of performance, syntax, interoperability, and adoption.


One of the most important aspects of Android app development is performance. Both Kotlin and Java are designed to be fast and efficient, but there is some debate over which language performs better. According to a study by JetBrains, Kotlin outperforms Java in many scenarios, including memory usage and code execution speed. This is mainly because Kotlin compiles faster than Java, which leads to better performance.



Another important aspect of programming languages is syntax. Java has been around for a long time and is considered to be verbose, which means it takes more lines of code to accomplish the same task as other languages. Kotlin, on the other hand, was designed to be more concise and expressive, making it easier to write code and read through it.


One of the main concerns of developers is interoperability, which means the ability to work with other programming languages and frameworks. Kotlin and Java are both object-oriented languages, which means that they can easily work together. Kotlin is fully interoperable with Java, which means that you can use Java code in your Kotlin app and vice versa.


Finally, let’s talk about adoption. Java has been around since the beginning of Android development and has a large community of developers working on it. Kotlin, on the other hand, is still a relatively new language that hasn’t had as much time to develop a community. However, since Android 21, Kotlin has become an official language for Android app development, which means that more developers will be using it in the future.

Case Study: A Real-Life Example of Kotlin vs Java

To help you understand the differences between Kotlin and Java better, let’s look at a real-life example of a Kotlin vs Java project. Imagine you are building an e-commerce app for Android that requires fast performance and easy code readability. In this scenario, Kotlin would be the better choice because it compiles faster than Java, leading to better performance, and its syntax is more concise and expressive, making it easier to write and read code.