Java Inheritance

Textual Information

Inheritance in Java allows one class to inherit the fields and methods of another class. It promotes code reusability and establishes a relationship between classes. The class that inherits is called the subclass, while the class being inherited from is called the superclass.

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Video Information

Code Snippets

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 dog = new Dog();
        dog.eat(); // Inherited method
        dog.bark(); // Dog's own method
    }
}

Quiz

Test your knowledge on Java inheritance:

1. What does inheritance allow a class to do in Java?

Inherit properties and methods from another class.
Create an instance of an interface.
Use multiple classes to create a single object.
None of the above.

2. Which keyword is used to inherit a class in Java?

implements
extends
inherits
superclass

3. What can a subclass do in Java?

Access only private methods of the superclass.
Override methods from the superclass.
Instantiate the superclass directly.
None of the above.