Learn Kotlin Quickly - Constructors And Properties

Mar 25, 2019

android
kotlin
constructor

Constructor


class Person (private var name: String, private var age: Int){

    init {
        println("Person $name was created!")
    }

    constructor(name: String): this(name, Random().nextInt()){
        println("Secondary contructor was invoked!")
    }

    fun describeYourself() = println("My name is $name and I am $age years old.")

}

Properties


class Computer{

    var cost = 500f
    val name = "Apple"

    lateinit var currentUser: String

    val isExpensive : Boolean
        get() = cost > 1000

    var properties: String = ""
        set(value) {
            field = value
            println("Properties were changed")
        }

    var id = 10
        private set

    init {
        this.id = 5
    }

}