encapsulation.kt

encapsulation.kt

class Something {
    var number: Int = 0
    get() {
        println("someone is trying to read number")
        return field
    }
    set(input: Int) {
       println("someone is trying to change number")
       if (input >= 0)
       	field = input
    }
}


fun main() {
    val obj : Something = Something()
    obj.number = -1 // won't change the number
    obj.number = 2 // number will be 2
    println(obj.number)
}