In Kotlin by using the "object" keyword we obtain a Singletone

Classes.kt

object TheObject {
    fun hello() = "hello"
    override fun toString() = "Hello, it's me, ${TheObject::class.simpleName}"
}

fun useSingletonObject() {
    println(TheObject.hello()) // => hello
    val someRef: Any = TheObject
    println(someRef) // => Hello, it's me, TheObject
}