Hands-On Object-Oriented Programming with Kotlin

Primary constructor with the init block

Having code directly in the class body is not a clean approach. Instead, Kotlin provides a very useful init block to initialize the class properties. We will describe the syntax of the init block here.

Create a block with the init keyword and initialize all properties within the block with class parameters:

class Person(pName: String, pAge: Int, pHeight : Double ) {    var name : String    var age : Int    var height : Double    init {       name = pName       age = pAge       height = pHeight    } }

The primary constructor and the init function are linked together. The init function will only be executed when the class is created using a primary constructor:

class Person(pName: String, pAge: Int, pHeight : Double ) {    var name : String ...