Hands-On Object-Oriented Programming with Kotlin

What is overriding?

Redefining the inherited function in a child class is called overriding. The purpose of function-overriding is to allow the derived class to give its own implementation because the provided implementation is not sufficient. In Kotlin, there are few rules to override a function:

• The function in the parent class must be declared open
• The function in the child class must use the override keyword

Let's add the displayInfo() function in the Student class and include more information using the print function. This works as follows:

open class Person(pName: String, pAge: Int) {    var name    = pName    var age     = pAge    open fun displayInfo(){        println("My name is $name, I am $age years old.")    }}class Student(name: String, age: Int, id ...