Classes in Kotlin

In Kotlin, a class can be defined with the class keyword. Let's take a look at how to declare a class and how to add attributes to it. In Kotlin, a class can be declared as follows:

class Person 

Compared to other programming languages, creating a class in Kotlin is very easy. All we need to do is open our IDE and create a person class with three attributes—name, age, and height. The name is a variable of the String type, age is a variable of the Integer type, and height is a variable of the Double type:

class Person {
    var name: String
    var age : Int
    var height : Double
 }

We have now declared a Person class with three attributes enclosed in brackets. After writing this code, we will notice that compiler has immediately thrown a Property not initialized error, because we haven't decided that how these properties will be initialized. Let...