Kotlin static methods and variables

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The closest thing to Java’s static fields is a companion object. You can find the documentation reference for them here: https://kotlinlang.org/docs/reference/object-declarations.html#companion-objects

Your code in Kotlin would look something like this:

class Foo {

    companion object {
        lateinit var instance: Foo
    }

    init {
        instance = this
    }

}

If you want your fields/methods to be exposed as static to Java callers, you can apply the @JvmStatic annotation:

class Foo {

    companion object {
        @JvmStatic lateinit var instance: Foo
    }

    init {
        instance = this
    }

}

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