Hands-On Object-Oriented Programming with Kotlin

Default constructor

The following class declaration is an example of a default constructor, when all properties of the class are directly initialized in the class body:

class Person {    var name: String = "Abid"    var age : Int = 40    var height : Double = 6.0 }val person = Person()

If you don't create a constructor for your class, Kotlin creates a default constructor automatically. The default constructor is a zero-argument constructor, in which all properties of the Person class contain some fixed initial values. The default constructor is not a good approach for object-creation. The object may have different values during its lifetime, but it will always have the same initial value at the time of creation.

In the following example, a Person ...