6 Best Kotlin Courses for Java and Android Developers to Learn Kotlin in 2023

These are the best online courses to join if you want to learn Kotlin in 2023 for Android or Java development

Published in
9 min readJan 8, 2020


5 Best Kotlin Courses for Java and Android Developers

Hello guys, if you want to learn Kotlin and looking for the best resources like online courses then you have come to the right place. Earlier, I have shared the best free Kotlin courses and Android development courses and in this article, I am going to share best Kotlin courses for Java and Android developers.

If you don’t know Kotlin, it’s a relatively new programming language that makes programming on Android and Java easy. It’s Android’s official Application development language and 100% compatible with Java and removes some of the pain points of Java.

Ever since Google announced Kotlin as the official language for Android Development, I received a lot of queries from my readers about whether Java developers should learn Kotlin now? Or, which one is better to start with Android development, — Kotlin or Java?

I have answered that question in my last article, but I am still receiving a lot of queries about learning Kotlin and whether a Java developer should learn Kotlin or not?

Well, to be honest with you, being a Polyglot programmer, i.e. a programmer who knows more than one programming language, is an important and distinguished skill.

It not only widens your thoughts but also makes you a better developer — that’s why I recommend every Java developer to at least learn one more JVM language, and Kotlin is a place to start.

Kotlin is now the official language for Android app development. So, if you are a Java developer with a passion for writing Android apps or want to reach the masses to promote your next startup idea, you should learn Kotlin.

But, even if you don’t have an interest in mobile development, you can learn Kotlin, because it improves your productivity while remaining 100 percent compatible with Java.

What you can do in 100 lines of code in Java can be done in just a few lines in Kotlin. It allows you to auto-generate getter, setter, equals, hashCode, toString, and other common methods; you don't need to write that on your own.

Kotlin was created by JetBrains, the company behind IntelliJ IDEA, and they created Kotlin to reduce Java boilerplate code while keeping features from the functional programming paradigm.

But, it wasn’t possible for them to rewrite all their IDEs in Kotlin from scratch, so they made sure that it remains 100 percent compatible with Java. If you don’t know this, Kotlin generates bytecodes that can run in the JVM.

Until last year, I was suggesting that Java developers learn Scala because of its impressive list of functional programming features, but 2023 is different.

This is the year to learn Kotlin! I expect Kotlin to surpass Java for Android development in a few years because of its distinguished position as the official language for Android development.

5 Best Kolin Courses for Beginners to Learn Kotlin in 2023

In this article, I am going to share some of the best online courses to learn Kotlin from scratch.

The courses are divided into two categories — the first teaches Android development with Kotlin and the second teaches the Kotlin programming language itself. You can choose the course that best suits your requirements.

1. Kotlin for Java Developers

If you are a Java developer who wants to learn Kotlin and enhance your career prospects, then this is the perfect course for you. It allows you to use your Java skills to learn Kotlin faster.

I strongly suggest Java developers learn Kotlin, not just for Android app development but also as a skill that they will use in the near future.

Since Kotlin works anywhere that Java works and can even be called from Java code (and vice-versa), this brings with it a massive opportunity for Java developers. Being able to work with both Java and Kotlin is going to give you a massive advantage over all other programmers.

This is a no non-sense course that has the right kind of pace and depth needed for experienced Java programmers. It is specially designed to teach Java developers how to use Kotlin in the shortest possible time.

Here is the link to join this Kotlin courseKotlin for Java Developers

best Kotlin course for Java Programmers

Sarah Eldritch, the instructor of this course, is an experienced Java and Kotlin developer, which makes her qualified to teach you this powerful and exciting language in a short amount of time.

In short, this is a perfect course for Java developers to learn Kotlin and also to understand the key differences between Kotlin and Java. I have recently purchased this course for just $9.99 in Udemy’s flash sale, which is seriously a bargain.

2. The Ultimate Guide to Kotlin Programming [Educative]

This is another awesome course to learn Koltin Programming language which is one of the hottest programming language of 2023. By some measures, over 50% of Android development is now happening in Kotlin, and at scale (at companies like Uber).

In our next course, The Ultimate Guide to Kotlin Programming, you’ll dive deep into Kotlin, the modern JVM language, using the knowledge, hints, and guidelines provided by Venkat Subramaniam. This is also one of the courses which are based on Pragmatic Programmers’ Kotlin book.

While this text-based, interactive Kotlin course is a great learning option for Java developers who want to learn a new skill, it’s also for anyone who is a lead developer, architect, or technical manager. It covers all the bases.

So what do you get out of this Kotlin course? You’ll start by understanding how Java and Kotlin differ, more specifically, how Kotlin removes a lot of the ceremony from Java programming tasks. Then you’ll learn how to work with functions, and how to utilize collections, something you’ll work with extensively in Kotlin.

Here is the link to join this courseThe Ultimate Guide to Kotlin Programming

best interactive course to learn Kotlin

Towards the end of this awesome interactive Kotlin course, you’ll start working with crucial concepts like lambdas, recursion & memoization (great for optimizing programs), and asynchronous programming.

In the last section, you’ll take all your learnings and build out an Android application. This will be a great addition to your portfolio and something you can show off to your friends.

By the way, you can either join this course individually or you can take an Educative subscription (recommended) to get access to their 250+ high quality, text-based, interactive courses to learn key skills for coding interviews, software development, and technology.

3. The Complete Kotlin Developer Course

This course is the best of both worlds. It will not only teach you the Kotlin programming language but also how to develop Android apps using Kotlin.

You will learn about variables, strings, and other data types in Kotlin, as well as essential programming constructs like conditionals, for loops, Maps, Functions, classes, Nullables, etc.

This Koltin Development course is created by Rob Percival and Nick Walter, two of the best instructors on Udemy. You will also learn how Kotlin and Java are related to each other.

In short, a good course to learn Kotlin basics along with its practical use for developing Android Apps. Going forward, you should use Kotlin instead of Java and create JavaScript code from Kotlin.

Here is the link to join this Kotlin course The Complete Kotlin Developer Course

best course to learn Kotlin for Beginners

4. Kotlin for Beginners: Learn Programming With Kotlin

This is an ideal course to learn Kotlin from scratch and understand object-orientation and idiomatic Kotlin for Android app development.

This course will teach you programming in Kotlin right, starting with the basics, which makes this course ideal for beginners.

You will put what you have learned into practice in several coding challenges. So, in the end, you’ll be able to create your own applications in Kotlin.

If you’re an Android developer, you can use this course to get up to speed with this awesome language. Kotlin will allow you to maintain a cleaner and more expressive code base, use concepts that go beyond even Java 8, and write more robust apps for Android.

Here is the link to join this Kotlin course Kotlin for Beginners

best course to learn Kotlin

5. Kotlin for Android: Beginner to Advanced

This is one of the most comprehensive courses on Kotlin for Android app development. Containing more than 100 lectures, you will learn almost everything about Android development with Kotlin.

Whether you’re a Java developer or have NO Android experience, this course will teach you everything you need to know about how to build apps using Kotlin.

The best part of the course is that it not only teaches you the theory and basics of Kotlin programming language but also teaches you everything about developing with Kotlin, working with interface builder, all the SDKs, and the tools you actually need to build apps.

Here is the link to join this kotlin course Kotlin for Android: Beginner to Advanced

best course to learn Kotlin for Android Development

You will develop real-life projects which is the best way to learn a new programming language or technology.

6. Android Kotlin Development Masterclass Using Android Oreo

Kotlin is an expressive, concise, and powerful development language for Android development, and there is a high probability that it will overtake Java on Android, which makes it important for all the programmers who want to do app development.

This is a complete Masterclass on Android development with Kotlin and teaches you everything you need to effectively write Android code using this powerful programming language.

If you want to make your career in Android application development, then Kotlin is indispensable for you.

You must learn Kotlin sooner rather than later, and this course is perfect to start with.

Here is the link to join this best kotlin course Android Kotlin Development Masterclass Using Android Oreo

best Udemy course to learn Kotlin

That’s all for now about some of the best courses to learn Kotlin in 2023. As I have said, after Google’s announcement of Kotlin as the official language for Android development, the demand for Kotlin developers is sure to rise, and this is the right time to learn Kotlin and tap the demand.

For Java developers, it’s a win-win situation because you not only get a chance to tab into Android development but also improve your productivity because of Kotlin’s concise and powerful syntax.

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Closing Notes

Thanks, You made it to the end of the article … Good luck with your Kotlin journey! It’s certainly not going to be easy, but by following these courses, you are one step closer to becoming a Kotlin Developer.

If you like this article, then please share it with your friends and colleagues, and don’t forget to follow javinpaul on Twitter! and javinpaul on Medium.

P.S. — If you need some Android development courses, you can check out this list of Android training courses to start your journey.




I am Java programmer, blogger, working on Java, J2EE, UNIX, FIX Protocol. I share Java tips on http://javarevisited.blogspot.com and http://java67.com