In addition to these, there's also Kotlin.JS, which as the name suggests, compiles to JavaScript. However, note that this likely requires the JDK, although it does depend on your project. If you're using a cross-platform Java library (for an instance LibGDX), or otherwise build on modules with a core and platforms, you can use Multiplatform here too. Multiplatform doesn't require Native though, but it enables significantly more platforms. I'm not sure how interop works here (in terms of languages - not module interop). I also haven't touched Multiplatform much, but it appears to be using a combination of declared functions and platform-declared functions. Multiplatforms, like Native, is experimental. Some demo projects use Kotlin JVM in the Android module, which suggests it doesn't use NDK-style native code. NOTE: I'm not sure what Kotlin Native with Multiplatform compiles to.

Kotlin Native also opens the door for Kotlin Multiplatform, which compiles to whatever you want (mobile targets, desktop targets, and it packs it all into one, and includes interop with the native programming language). This version of Kotlin supports C interop. Specifically, it compiles to a native target using LLVM. The SDK itself is slightly different from Kotlin JVM, and it's still a WIP, but it compiles without the need for JVM. Additionally, this is the one you're most likely to find yourself using with Android. This is also why Kotlin has Java interop. Kotlin compiles to JVM bytecode, which means it has the same requirements as Java (runtime and development kit). As already mentioned, Kotlin JVM requires the JVM to work.

Will kotlin replace java