By Alvin Alexander. Last updated: February 6, 2019
As a little note to self, here are some examples of how to create ArrayList instances in Kotlin while explicitly assigning their types:
import java.util.AbstractCollection import java.util.AbstractList fun main(args: Array<String>) { val a: ArrayList<Int> = arrayListOf(1,2,3) val b: AbstractList<Int> = arrayListOf(1,2,3) val c: MutableList<Int> = arrayListOf(1,2,3) val d: AbstractCollection<Int> = arrayListOf(1,2,3) val e: MutableCollection<Int> = arrayListOf(1,2,3) val f: Collection<Int> = arrayListOf(1,2,3) val g: MutableIterable<Int> = arrayListOf(1,2,3) val h: Iterable<Int> = arrayListOf(1,2,3) val i: List<Int> = arrayListOf(1,2,3) }