Kotlin is a statically typed programming language designed to interoperate with Java and fully supported by Google on the Android operating system. It is also a multiplatform language that can be used to write code that can be shared across platforms including macOS, iOS, Windows, and JavaScript.

Based on Big Nerd Ranch’s popular Kotlin Essentials course, this guide shows you how to work effectively with Kotlin through hands-on examples and clear explanations of key Kotlin concepts and foundational APIs. Written for Kotlin 1.5, this book will also introduce you to JetBrains’ IntelliJ IDEA development environment.

Whether you are an experienced developer or are learning your first programming language – and whether you are interested in Kotlin for Android, server-side, or multiplatform projects – the authors will guide you from first principles to advanced Kotlin usage. By the end of this book, you will be empowered to create reliable, concise applications in Kotlin.

About The Authror

Andrew Bailey is an Android engineer and instructor at Big Nerd Ranch. He graduated from the Georgia Institute of Technology with a degree in computer science. When he's not builidng apps or teaching a class, he can be found baking, playing video games, or ruining his dungeon master's game plans.

David Greenhalgh is a senior engineering manager at FanDuel and a former Android team manager and instrctor a Big Nerd Ranch. He has a degree in computer science from the Gerogia Institute of Technology. Outside of work, he can be found cooking, reading, or being disappointed by the Buffalo Bills.

Josh Skeen is a senior software engineer at Square and a former Big Nerd Ranch Instructor. He has lectured internationally on Java, Android Devlopment, and kotlin. When not in front of computer, you can find him running, practicing Brazilian jiu-jitsu, or creating patches for his modular synthesizer.