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Learner Reviews & Feedback for Kotlin for Java Developers by JetBrains

1,920 ratings

About the Course

The Kotlin programming language is a modern language that gives you more power for your everyday tasks. Kotlin is concise, safe, pragmatic, and focused on interoperability with Java code. It can be used almost everywhere Java is used today: for server-side development, Android apps, and much more. Kotlin is 100% compatible with all existing Java frameworks, and has good tooling support. It’s a pragmatic language with a very low learning curve, and can be quickly grasped by Java developers. Kotlin code might be compiled not only to JVM bytecode but to JavaScript and Native code as well, but this course is focused on Kotlin/JVM. This course aims to share with you the power and the beauty of Kotlin. We'll have a basic overview of the language, as well as a discussion of many corner cases, especially concerning Java interoperability. The course is based on your Java experience; it shows the similarities between the two languages and focuses on what's going to be different. Note that this course won't cover the programming fundamentals. We'll discuss: basic syntax, nullability, functional programming with Kotlin, object-oriented programming with Kotlin, the power of the Kotlin standard library, and Java interoperability....

Top reviews


Jun 28, 2019

Excellent course, packed with relevant content and useful hands on Kotlin exercises with great feedback based on Coursera provided unit tests. Looking forward to more Coursera courses from JetBrains.


Mar 15, 2020

Thanks JetBrains team, the course is as great as all the things that you do!

Now I am going to visit Kotlin island (Kronstadt) to see lighthouse on your logo (I leave nearby in Saint-Petersburg).

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276 - 300 of 469 Reviews for Kotlin for Java Developers

By Vladimir

Mar 13, 2019

Waited for the next course from kotlin team

By Alberto G

Dec 29, 2020

Nice introductory and hands on programming

By Antonio C

Aug 29, 2019

Very good course, with excelent exercises.

By Pietro P

Dec 23, 2021

This is the Kernighan/Ritchie of kotlin

By Leah H

Dec 8, 2021

Really good course with good assignment

By Muhammad I

Jun 23, 2020

Amazing course for beginners especially

By Egor M

Feb 23, 2020

Exceptional course, can't wait for more

By El-hadj H

Jan 12, 2022

Great course! Never been so satisficed

By Tavish B

Jun 12, 2020

This course may challenges your brain.

By Васильев А А

Oct 1, 2019

Очень хороший вводный курс по Котлину

By Drazen P

Jul 28, 2019

I really enjoyed this course. Thanks!

By Ravi S

May 25, 2019

NOT LEARNED YET ha.... ha.......

By Luke M

Apr 18, 2019

Fun course with a good pace. Thanks..

By Indra P

Jun 10, 2021

This course is very helpfull for me.

By Romain M

Nov 7, 2020

Amazing :) Keep up the good work !

By Olaf G

Aug 5, 2019

Exceptionally good course! Thanks!

By Anirudh J

Oct 10, 2020

This is an extremely good course.

By Morteza R (

Dec 30, 2022

it was so practical and useful.

By Gustavo P

May 17, 2022

The best course of kotlin! yay!

By Veggalam S

Apr 23, 2020

very helpful and understandable

By Dũng P

Dec 25, 2022

This course so helpful for me.

By Nemanja S

Jan 13, 2020

Great course, I learned a lot!

By Michal K

May 31, 2019

Very good to start with Kotlin

By Irwan C

Jun 30, 2019

Good for learning fundamental

By Hamza A

Dec 10, 2019

Excellent and good knowledge