Hello gang. Can anyone explain the kotlin artifact structure to me a bit? Specifically I’m interested in the kotlin-stdlib-jdk8 package. I’m creating a Quarkus app and I’m using Java 11 but it seems that I still have to declare a dependency on the -jdk8 package. As there is no -jdk11 package I assume this is all fine and correct… but I kind of want to understand what the idea behind this package is exactly.

AFAIK

jdk-8

currently is what you want to use. To answer “why” we want to talk about history a bit. Main “stdlib” can be used for Java 1.6. This is important to keep backward compatibility, especially when we think about folks developing for android back in the days when Kotlin first emerged. But Java moved forward and Java 1.7, and then Java 1.8 released. So, you get

stdlib-jdk7

and

stdlib-jdk8

accordingly. Those contains additional extension functions for API’s that were added in those Java versions.

Thanks! That answers my questions 🙂

Actually you shouldn't declare the stdlib at all anymore, the Gradle plugin will do it for you, including the language variant matching your environment iirc 🙂

https://kotlinlang.org/docs/reference/using-gradle.html#dependency-on-the-standard-library Yeap, this is how it works. Thanks @Vampire, will remove my stdlib’s 😅

hmmm…

Cannot access built-in declaration 'kotlin.String'. Ensure that you have a dependency on the Kotlin standard library

Doesn’t seem to work for me. Is this maybe new in 1.4 @Vampire? I have a Quarkus project that seems to still be dependant on 1.3.

Yes, that's new in the 1.4 Gradle plugin, sorry to not have mentioned 🙂

no worries 🙂 good to know