This course is great. It is very pleasant to listen to the lecturer, there are many detailed and well-developed examples. However, the complexity of the tasks performed changes too quickly. You may be asked to repeat what the lecturer just said, and then asked to write a dozen functions through lambdas. Although, I think this is just my personal experience. I give 5 and recommend to all Java developers.

I started coding in Kotlin a few months back. And to give myself a comprehensive and detailed foundation in Kotlin I decided to complete this course of Coursera provided by Jetbrains. I must say this is an 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.

Als kompletter Neuling in Kotlin, aber mit reichlich Erfahrung mit Java und PHP, finde ich diesen Kurs gut. Ich finde die Sachen sind ausreichend erklärt. Dass die Videos so kurz gehalten sind (5-8 Minuten) macht es einfacher, mitzufolgen und danach zu verarbeiten. Die kurzen Programmieraufgaben zwischendurch oder auch die Fragen zwischen den Videos tragen zu dem Verständnis sehr viel bei!

Very helpful, even after 2 years of Kotlin development, because the course helped to remember some forbidden but very useful feature of the language. Thanks for the course. PS: For the Week 5 assignment the possible solution video is missing (even for Week 4, but it is included in Week 5 assignment), please create one, it would be very helpful to see a more professional solution.

Great course for those coming from a strong Java development background. This course is very information-dense and respects the developer's time by assuming students are _experienced_ Java developers. Because Kotlin is a JVM language, language features and implementation are explored using Java as a point of reference. The projects are driven by unit tests and are well-structured.

I really enjoyed this course! The programming assignments were moderately challenging and interesting enough to keep me going. There is some technical material showing how Kotlin code turns into compiled JVM bytecode but it is not necessary to have an in-depth knowledge of Java to benefit from the course and learn Kotlin.

I am looking forward to the Kotlin course to follow!

This course does deserve 5 stars, but there are some smaller issues: * Some videos that feature questions don't stop at the right time or not at all. * There is no video solution for the final task to see a professional solution. * The final task's pre-implemented game-over function for 2048 triggers incorrectly when board is full but moves would still be possible

Awesome course! Clear and straightforward introduction to Kotlin, covering a wide range of features the language can provide. Challenging and fun assignments, very practical, perhaps a bit underestimated in terms of the effort required (they definitely took me more time than what had been estimated). Great course, JetBrains! I'm looking forward to the next chapters.

Amazing faculty! I appreciate the little nuisances given for the Kotlin Language development as well. Things like what happens in Java and it's equivalent in Kotlin, if it differs then why does the implementation differ in Kotlin when compared to Java. Such insights made me intruiguied througout the course. Great course every Java Developer must have.

The best course in Kotlin, everything was well explained, the assignments were very good implemented to this course and allow you to practice what you learned, but you need to have a prior knowledge in Java or similar languages to gain the full of this course.. I really recommend it for anyone who wants to learn Kotlin the fast and the right way.

It was a real pleasure to complete this course. You can clearly tell that the people at Jetbrains put a lot of effort into it (thanks!). Improvements suggested on the discussion forums were taken very seriously and the class was improved accordingly. Very much appreciated! Looking forward to using Kotlin for my next projects...

A clear and comprehensive introduction to Kotlin. Lots of (way more than anticipated) concepts and features are covered in this course. Assignments are well designed as well, with emphasis on the mixed programming paradigm (OO & FP). I hope the promised Advanced Kotlin & Kotlin Coroutine courses are to be released soon!

Nice introduction to Kotlin. You learn the programming language and some pragmatic usage patterns. It has the perfect pace for experienced developers. Although beginners will have a hard time. The assignments are challenging. You definitively have to dig into the Kotlin reference manuals for complete understanding.

Best course for Kotlin from the very best Jetbrains. Suitable for those who have worked with Java before (as the title states). The last exercise was pretty hard, almost died in the end. All in all, it is really helpful. I wish Jetbrains would come up with an advanced course promised in the conclusion video.

Course is very practical and easy to understand. It really helps a lot to acquire new language much faster when you learn based on your existing knowledge of another language. Definitely recommend this course and looking forward to complete more advanced Kotlin courses from JetBrains when they are launched

Great course. Very detailed oriented on why features are implemented and what are the use cases of the same. Common Operations on Collection and Auxiliary functions could be explained in more detailed since these two are important for coding. So better to have a very clear concept on these two.

I started a kotlin project led by colleagues, but some things were not without, so I started this course. Incredible, it made me understand that what they were doing was not kotlin but something else and in addition it gave me the basis to better understand the language and correct that fact.

Very informative and interesting course. Requires a solid background in programming, and even though some assignments could be explained a bit better as not all of us has a background in maths (hint: permutations), the videos are excellent, both in quality of production and content.

Thumbs up!

It was great to have the original creators of a language explain the ins and outs of it and the reasons why the Kotlin language is the way it is. This deeper understanding helps in grasping all the concepts and best practices.

The programming assignments are great and challenging.

Really good course even for those who know the basics of Kotlin and need a refresher. Svetlana, the instructor, is amazing with great examples for everything. The programming assignments are also great in really cementing the things learned. Looking forward to the next course!!

I learned a LOT of new things I didn't know about Kotlin, such as the use of inline, infix, operator functions, the OOP side of Kotlin and the Functional programming side of it. Thank you to JetBrains and the Kotlin team for making such a useful course. Keep up the good work

Very useful and interesting course. I would like to draw your attention to the fact that this course is really for Java developers. All functionality is presented in two languages, it is shown how to integrate one language into another and how it works under the hood.

This is an excellent introduction to Kotlin. I really like the way it was presented. It has a nice balance of theory and practice. The coding part was a lot of fun, especially implementing games in week 5 coding assignment. I highly recommend it to all my friends.

If you are a many years Java Developer like me, and just started to explore Kotlin. I am sure you will have some WOW moments during this course about things that Kotlin does much better. Highly recommend for Java Developers to quickly get you hands on Kotlin.

I enjoyed the course very much. Only critique I have is that the "grader" doesn't understand Kotlin 1.4, while the tasks are set up automatically in IntelliJ to work with that version of the language. Caused me some confusion at first, but not a big deal. :)