Example of First Constructor and Second Constructor

fun main(args: Array<String>){

    var student = Student("Khoi")

    student.Name
    println( "value"+student.id)
}

//first constructor with properties
class Student(var Name:String){
    //properties for secondary constructor
    var id:Int = -1

    init{
        println("Student name is $Name")
    }

    //secondary constructor
    //this - refer to 1st constructor
    constructor(name:String,id:Int):this(name){
        this.id=id
    }
}