Val result = handleSomeSealedInterfaceInstance(testObj) Val testObj = SomeSealedImplementation('some property value') In Kotlin a todo is not just a marker of guilt and a pretence one will come back and finish things later, but an actual function: of the TODO function')Ĭlass TodoTest `It should throw a NotImplementedError`() My mindset was 'OK, I need to do to make the koans exercise pass, but what is that all about?' And today I shall continue. I used the koans as a jumping off point to look at stuff. Kotlin: the next morning learning Kotlin stuff.Kotlin: an afternoon learning Kotlin stuff.The problem in this portion of the tutorial was to take this Java code and rewrite as Kotlin code.I started doing the Kotlin koans a while back, and discuss my meagre progress in these articles: Of course, I wanted to do the exercise myself so that I can get the hang of writing Kotlin code. I thought this was incredibly slick because it gave me the change to see the differences between Java and Kotlin.

You can see in the video that IntelliJ just did the work of taking the Java code that I copied and pasted into my Kotlin class.

When you copy and paste Java code into the IDE, it will offer to translate it to Kotlin for you.

It was IntelliJ’s support of Kotlin that blew me away. It wasn’t that I was super impressed with the language itself. When I moved onto part two of the tutorial, I was really impressed. Nevertheless, I decided to continue with the Kotlin tutorial found at. After doing the first tutorial on Kotlin, I was impressed, but let’s face it, anyone can do a simple “hello world” style program.