Kotlin Quick Start for Java Developers

In this course, I will guide you through a number of small examples and one modestly complex project. Through these examples, you'll learn the fundamental language features needed to create Kotlin applications.

This isn't an in-depth reference covering every detail of the language. Rather, it's a tutorial covering the most important parts of the language, the 80% that I use every day. After completing this course, you'll still have more to learn, but you'll have everything you need to start being productive with Kotlin.

The table of contents is not ordered in terms of Kotlin features. Rather, the course is organized by the business features we add to our sample project. We introduce new Kotlin concepts as the need organically arises in the context of building our project.

We'll be using the IntelliJ IDE. So you'll be learning the fundamentals of Kotlin in the context of one of the world's greatest IDEs. And that's important because Kotlin, when teamed with IntelliJ, provides the most productive programming environment I ever used. With that said, this course is still appropriate for those who just want to learn Kotlin but don't plan on using IntelliJ.

Lastly, this course is not specific to any particular problem domain (i.e. android apps, server-side web apps, compile-to-JavaScript apps, or native apps). Instead, we focus on the core concepts common to all domains. As such, most of our examples take the form junit test cases.