How do you get the String companion from Java? Non...

# getting-started

[hfhbd]

How do you get the String companion from Java? Non native classes works well, but I am not able to get mapped Kotlin classes 🤔

[ephemient]

kotlin.jvm.internal.StringCompanionObject.INSTANCE
but why do you want to get it in Java?

[hfhbd]

Thanks. Is it "safe" to use the internal package? :D
I want to call some kotlin functions using the companion as a receiver like: fun String.Companion.foo()

[ephemient]

it's not a public API, but it can't change without breaking binary compatibility with existing Kotlin libraries, so… somewhat safe?

[ephemient]

Kotlin functions defined like that aren't designed to be callable from Java though, I'd either change their definition or switch the caller to Kotlin

[hfhbd]

That's true, and yeah, using Kotlin is always nicer. But creating another wrapper in Kotlin is annoying too, and now knowing the companion object its usage is okay.