Kotlin for Java Developers
Use your Java skills to learn Kotlin fast. Enhance career prospects and master Kotlin, including Java interoperability
Are you a Java developer wondering if you need to learn Kotlin?
Maybe you are an experienced Java developer who wants to learn Kotlin quickly, to be prepared for future project work.
Perhaps instead, you’re an Android app developer who knows Java well, but you want to be able to move forward with Kotlin for new Android development work.
Well, with Google’s recent focus on Kotlin for Android app development, this language has been launched into the mainstream, and you can be sure you will be seeing a lot more about it. It’s also highly likely that you will be working with Kotlin in your Java projects in the near future.
Because Kotlin works anywhere 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 other programmers.
This course was designed to teach Java developers how to use Kotlin in the shortest possible time.
Sarah Ettritch, your course instructor, is an experienced Java and Kotlin developer, with many years of software development experience. She is uniquely qualified to teach you how to use this powerful and exciting language.
While you won’t learn Android app development in this course, you will learn Kotlin, and also the key differences between Kotlin and Java.
There is an entire section dedicated to Java interoperability, which is vital for all Java developers to learn.
In addition, the Kotlin syntax is explored in detail.
Over sixteen hours of videos are included in the course, making it one of the most comprehensive courses on the language.
Now is the perfect time for you to learn Kotlin, while it’s relatively new. It has been around for a while, but only now is it being thrust into the limelight.
It’s absolutely vital for Java developers to learn Kotlin to maximize future career opportunities. Objective-C developers who failed to transition to Swift, or were too slow doing so, were left behind. Don’t make the same mistake they did!
If you are ready to greatly increase your career prospects by adding Kotlin experience to your skills and knowledge, then sign up for the course today.
Requirements
- Ideally, have at least a basic knowledge of Java (not essential)
- A computer running Windows, Mac OS X or Linux
What you will learn
- Create Kotlin programs
- Understand the differences between Java and Kotlin
- Understand how Java and Kotlin programs interoperate
Who should attend
- Java programmers wanting to learn Kotlin
Is available on google app?
Yes
Is available on ios?
Yes
Course Features
- Lectures 92
- Quizzes 0
- Exercises 0
- Duration 17 total hours
- Skill level All Levels
- Students 34003
- Last Updated December, 2025
Comprehensive Course Overview and Environment Setup for Kotlin
Kotlin Fundamentals: Language Overview and Java Code Conversion
Essential Kotlin Fundamentals: Grasping Key Differences from Java
Kotlin Types and Null Safety: Mastering Data Types and Null Handling
Object-Oriented Kotlin: Classes, Functions, and Class Inheritance
Mastering Kotlin Loops, Conditionals: If, When, and Try/Catch as Expressions
Kotlin Generics, Collections, and Functional Programming with Lambdas
Kotlin File Input/Output (I/O) with Java Interoperability
Java and Kotlin Interoperability: Mixing and Matching Code
Kotlin for Java Developers: Comprehensive Course Conclusion and Next Steps
Extra Information - Source code, and other stuff
6 days ago
Ankit Kumar
As of now Explanation is good
2 weeks ago
Akshitha Thokala
GOOD
2 weeks ago
Shagun Verma
I'm already having intermediate knowledge of the Java Programming Language. So, I find this course very good and easy to understand. Many concepts are very different to Java, and as I write more and more Kotlin code, I think Kotlin is more fluent and modern than Java. I also see that it is very flexible (concise) as compared to Java. The only thing that worries me is that the lectures in these courses were recorded in 2017, and I am watching them in 2025. So I think there are more new Kotlin features that you don't find in the course. But, I think this is fine because as you learn initial Kotlin, you can quickly adapt to new features.
2 weeks ago
Kevin Ruiz
Amazing content!
4 weeks ago
LEONARDO BARBOZA AUGUSTO
For a Java developer, this course has a bunch of tips worth knowing between Kotlin and Java. It's amazing.
1 month ago
ROLF-PETER DSUBA
Really liked it
2 months ago
Attila Nemeth
Great course, very easy to follow and understand, lots of examples. Some lessons are outdated (for example contravariance).
3 months ago
Nagesh LNU
Good course
3 months ago
Fazli Rosli
Good, but missing information about coroutines.
3 months ago
Thomas Ehardt
Well-paced - covers a lot in a (relatively) short time


10 Comments
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