Tasklist
It's always good to have something that can remind you about important tasks. It may be simple paper notes or a sophisticated app. In this project, you will create a text-based program that shows tasks, deadlines, and priorities.
Kotlin Core
4.5134 hours97K learnersCertificate
Kotlin, developed by JetBrains, is Google's preferred language for Android app development. Master the language under the guidance of its original creators.
JetBrains AcademySee course content3 weeks ago last updated
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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, you’ll get familiarized with the language syntax, concepts, and libraries, as well as with the basics of OOP. Working on real-life projects, you’ll learn to appreciate the simplicity, clarity, and beauty of Kotlin code.
What you will do:
- learn the Kotlin syntax and work with a variety of its features;
- simplify your application design with functional decomposition;
- master key programming concepts;
- clarify your code with OOP decomposition;
- get familiar with helpful tools like Java and Kotlin libraries;
- learn how to deal with bugs in your programs;
- work with professional development tools, IDEs;
- understand how AI tools can support problem-solving and coding tasks and use them to explore solutions, review code, and improve productivity;
- get text processing experience;
- learn how to work with the file system.
Ready to get your feet wet? Select the course and start your journey!
This course includes:
- 1140+
- Choice problems
- 850+
- Coding problems
- 286
- Theoretical articles
- 29
- Projects to choose from
- Certificate of completion
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.
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
8 months ago
I recommend this course as an extremely important and foundational Kotlin knowledge base. This is the starting point for whomever wants to dive in software development in general, provided with an excellent learning roadmap and a wonderful community driven feedback experience. If you add to that t ...
9 months ago
this course taught me more about Kotlin than I knew existed, an incredible amount.
9 months ago
It's a very useful course, comprehensive, with plenty of examples and interesting tasks.
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Course provided by JetBrains Academy
Bug Hunterhas successfully completed the courseKotlin Core
Issue date September 18, 2026
286 topics completed
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