Bridge to Kotlin Part 8

sealed_classes_2.kt

fun main(args: Array<String>) {
    val mammal: Human = Human("John Doe","CEO")
    println(greetMammal(mammal))
    val cat = Cat("Shwe War")
    println(greetMammal(cat))
}

fun greetMammal(mammal: Mammal): String {
    when(mammal) {
        is Human -> return "Hello ${mammal.name}; You're working as a ${mammal.job}"
        is Cat -> return "Hello ${mammal.name}"
    }
}

sealed class Mammal(val name: String)
class Cat(val catName: String) : Mammal(catName)
class Human(val humanName: String, val job: String) : Mammal(humanName)