What are some examples of inheritance in Java OOP?

What are some examples of inheritance in Java OOP?

Inheritance in Java allows a class to inherit properties and methods from another class. For example, if you have a class Animal, you can create a subclass Dog that inherits from Animal. This means Dog will have all the attributes and behaviors of Animal.

Can you give me a code example of that?

Sure! Here's a simple example:

class Animal {
    void eat() {
        System.out.println("This animal eats food.");
    }
}

class Dog extends Animal {
    void bark() {
        System.out.println("The dog barks.");
    }
}

public class Main {
    public static void main(String[] args) {
        Dog myDog = new Dog();
        myDog.eat(); // Inherited method
        myDog.bark(); // Dog's own method
    }
}

What happens if I override a method in the subclass?

When you override a method in a subclass, you provide a new implementation for that method. For example, if Dog overrides the eat method, it can define specific behavior for how a dog eats, while still being able to call the original eat method from Animal if needed.

Can you show me an example of method overriding?

Absolutely! Here's how you can override the eat method in the Dog class:

class Dog extends Animal {
    @Override
    void eat() {
        System.out.println("The dog eats dog food.");
    }
}

public class Main {
    public static void main(String[] args) {
        Dog myDog = new Dog();
        myDog.eat(); // Calls the overridden method
    }
}