Book Image

Kotlin Quick Start Guide

By : Marko Devcic
Book Image

Kotlin Quick Start Guide

By: Marko Devcic

Overview of this book

Kotlin is a general purpose, object-oriented language that primarily targets the JVM and Android. Intended as a better alternative to Java, its main goals are high interoperability with Java and increased developer productivity. Kotlin is still a new language and this book will help you to learn the core Kotlin features and get you ready for developing applications with Kotlin. This book covers Kotlin features in detail and explains them with practical code examples.You will learn how to set up the environment and take your frst steps with Kotlin and its syntax. We will cover the basics of the language, including functions, variables, and basic data types. With the basics covered, the next chapters show how functions are first-class citizens in Kotlin and deal with the object-oriented side of Kotlin. You will move on to more advanced features of Kotlin. You will explore Kotlin's Standard Library and learn how to work with the Collections API. The book finishes by putting Kotlin in to practice, showing how to build a desktop app. By the end of this book, you will be confident enough to use Kotlin for your next project.
Table of Contents (15 chapters)
Title Page
Copyright and Credits
Packt Upsell

Kotlin's uses

Now that we know that Kotlin apps run on the JVM, we also know that it basically means that Kotlin can be used for anything that Java could be used for.

Today, Java is really popular for backend (server) development and Kotlin can be used for any kind of server development. Whether it is web apps that serve HTML content, a backend for REST APIs or Microservices, Kotlin can do the job. Not only that, thanks to the Kotlin JavaScript compiler, it can also be used for building frontend web Apps. So it is entirely possible to create a web App (both backend and frontend) using only one language.

Another area where Java used to be dominant was in native Android development (other JVM languages could also be used, but none has really gained popularity on Android). This is where Kotlin has probably gained the most popularity. In one part, due to Google officially supporting it for Android development, and, secondly, because Android is still stuck on Java 6. Kotlin, with its modern features, spread rapidly among the Android developers' community.

Kotlin can also be used for developing desktop apps since both JavaFX and Swing UI libraries can be called from Kotlin.