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Kotlin lessons (23/33)

Kotlin — Inheritance

Open class

open class Animal {
    open fun sound() = "Some sound"
}

class Dog : Animal() {
    override fun sound() = "Bark"
}

Constructor

open class Person(val name: String) {
    open fun greet() = "Hello, $name"
}

class Student(name: String, val grade: Int) : Person(name) {
    override fun greet() = "Hi, I'm $name in grade $grade"
}

Mini Practice

  1. Create open class
  2. Override methods
  3. Use constructors
  4. Practice inheritance

Up Next

Continue with Data Classes - Data classes.

Related Topics

ConstructorsInterfacesData ClassesSealed Classes

Frequently Asked Questions about Inheritance

What is Inheritance in Kotlin?

Inheritance is a fundamental concept in Kotlin. This lesson explains it step by step with clear examples, making it easy for beginners to understand.

How do I learn Inheritance?

Start by reading the explanation above, then try the code examples. Practice by modifying the examples and experimenting with different values. Hands-on practice is the best way to learn Inheritance.

Why is Inheritance important in Kotlin?

Inheritance is essential for Kotlin development. Understanding this concept will help you write better code and solve real-world problems more effectively.