Introduction to Kotlin

Name: Introduction to Kotlin
Rating: 4.6 (1 reviews)

4.628 hours8K learnersCertificate

Start your first exciting journey with Kotlin programming! Discover how to work with variables, control code flow, and grasp essential concepts of object-oriented programming.

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JetBrains Academy

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Study at your own pace

Fit learning around your schedule. Suitable for all levels.

Learn from the experts

Short, practical text lessons by seasoned developers.

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Integrated with professional tools by JetBrains.

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What you'll learn

In this course, we'll walk you through the basics of Kotlin step by step, explain why Kotlin has become so popular among developers, and how it compares to other programming languages. You'll learn about the advantages of the language and discover how it can make your coding life easier.

By the end of this course, you'll:

have a solid foundation in Kotlin programming;
be able to write your own code;
understand how to utilize Kotlin's features effectively and even collaborate with other developers;
learn how to use AI tools to explore solutions, understand code, and improve your workflow.

Whether you dream of creating mobile apps, server services, web applications, or diving deeper into software development, this course will equip you with the skills you need to pursue those goals.

Course program

View all 12 sections

This course includes:

300+: Choice problems
230+: Coding problems
77: Theoretical articles
9: Projects to choose from
: Certificate of completion

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Learn by doing

# 1

Apply knowledge into practice

You already know the theory. Now it's time to code like you do at work—in a professional IDE, with real project constraints, solving problems that actually matter. Welcome to software engineering as it should be.

# 2

Navigate complexity with surgical precision

Most developers waste months learning random concepts without seeing how they connect. Our interactive Knowledge Map fixes this. It shows exactly how every programming concept relates to others, helping you build a structured mental model of coding.

# 3

Copy the best. Then improve.

Here's what top engineers do that others don't: they study other people's code obsessively. When you get stuck on Hyperskill, you can explore solutions published by other developers. See their exact code. Understand their approach. Learn their tricks.

# 4

Code review that actually makes you better

We stripped code review down to what actually matters: does your solution work? Have you handled the edge cases? Is there a cleaner way to write this? Hyperskill acts like a competent reviewer who actually tests your code. Not genius-level analysis, not architecture debates — just solid feedback on making your code better.

Elevate your engineering mastery through real-world challenges

Master advanced engineering concepts through ambitious projects. Each project deepens your expertise and transforms you from an experienced engineer into an exceptional one.

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Learn from the industry experts

JetBrains Academy

JetBrains Academy is a part of JetBrains, a global software company specializing in the creation of intelligent, productivity-enhancing tools for software developers and teams. With years of expertise in software development and education, JetBrains Academy empowers more than a million people worldwide to learn and teach computer science, and help organizations inspire their teams to reach their goals in tech. Professional development tools play a big role in computer science education. This is why JetBrains Academy courses offer integration with JetBrains IDEs. This integration assists learners in getting experience with real development processes to streamline their learning curve at future work.

Your peers think Hyperskill rocks

Jim Jordan

1 month ago

A great introduction with challenging projects to exercise the features of the language.

Ryan Reus

2 months ago

When I started this course, I knew very little about any kind of computer programming language. The hands-on exercises are a great way to learn all at your own pace. At first, I didn't like the "lives" system, but then I realized that losing a "life" made me study harder and strive to "git good", so ...

Sougata Dutta

4 months ago

This track is an exceptionally well-structured gauntlet for anyone wanting to master Kotlin fundamentals. Instead of just drilling isolated syntax, it forces you to build actual, persistent systems. You start by simply printing text to a console and end up architecting complex, interactive state mac ...