Module 10: Inheritance

👪 What is Inheritance?

Inheritance is a mechanism where one class acquires the properties and behaviors (fields and methods) of another class. It supports reusability and method overriding.

In Java, inheritance is implemented using the extends keyword.

🧬 Single Inheritance Example

                    class Animal {
                        void eat() {
                            System.out.println("This animal eats food");
                        }
                    }
                    
                    class Dog extends Animal {
                        void bark() {
                            System.out.println("Dog barks");
                        }
                    
                        public static void main(String[] args) {
                            Dog d = new Dog();
                            d.eat();
                            d.bark();
                        }
                    }
                    

🔁 Method Overriding

Method overriding allows a subclass to provide a specific implementation of a method already provided by its superclass.

                    class Animal {
                        void sound() {
                            System.out.println("Animal makes a sound");
                        }
                    }
                    
                    class Dog extends Animal {
                        void sound() {
                            System.out.println("Dog barks");
                        }
                    
                        public static void main(String[] args) {
                            Dog d = new Dog();
                            d.sound();
                        }
                    }
                    

🔗 Types of Inheritance in Java

• Single Inheritance
• Multilevel Inheritance
• Hierarchical Inheritance

Note: Java does not support multiple inheritance with classes, but it supports multiple inheritance with interfaces.