A modern programming language that makes developers happier.

kotlinlang

<https://blog.jetbrains.com/kotlin/2025/11/growing-kotlin-adoption-in-your-company-2/|Growing Kotlin Adoption in Your Company>
Guest post by Urs Peter, Senior Software Engineer and JetBrains-certified Kotlin Trainer. For readers who’d like a more structured way to build Kotlin skills, Urs also leads the Kotlin Upskill Program at Xebia Academy. This is the third post in The Ultimate Guide to Successfully Adopting Kotlin in a Java-Dominated Environment, a series that follows how […]

Part 1 was already a good read, this one is truly excellent! A wealth of practical guidance and well-founded strategy advice. Love it!

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It's not really recommended to use Optional as a field in Java

<https://www.jetbrains.com/help/inspectopedia/OptionalUsedAsFieldOrParameterType.html>

It is really hard to convince iOS developers to use kotlin. And sometimes I can understand them, because when doing a sdk for iOS you have to be really careful with memory management, mutable variables and annotations, otherwise iOS app is going to crash randomly.
I am sure that Jetbrains is doing a big effort improving this, but just in case I would like to encourage to Jetbrains to focus on iOS experience as a first priority :)