Kotlin get type as string

Question

I can't find how to get the type of a variable (or constant) as String, like typeof(variable), with Kotlin language. How to accomplish this?

Answer 1

You can use one of the methods that best suits your needs:

val obj: Double = 5.0  System.out.println(obj.javaClass.name)                 // double System.out.println(obj.javaClass.kotlin)               // class kotlin.Double System.out.println(obj.javaClass.kotlin.qualifiedName) // kotlin.Double 

You can fiddle with this here.

Answer 2

There is a simpler way using simpleName property and avoiding Kotlin prefix.

val lis = listOf(1,2,3) 

lis is from type ArrayList. So one can use

println(lis.javaClass.kotlin.simpleName)  // ArrayList 

or, more elegantly:

println(lis::class.simpleName)  // ArrayList