Beginner module
Module 6: Inheritance and Polymorphism
Master code reuse with inheritance and create flexible systems with polymorphism. Learn about superclasses, subclasses, method overriding, abstract classes, and interfaces.
Lessons
5
Short units, clear order.
Starts with
Inheritance Basics: The `extends` Keyword
Finish line
Interfaces
Lesson checklist
Module 6: Inheritance and Polymorphism
Inheritance Basics: The `extends` Keyword
Learn how to create a new class that inherits fields and methods from an existing class, promoting code reuse and establishing a type hierarchy.
Method Overriding, the `@Override` Annotation, and the `super` Keyword
Learn how a subclass can provide its own specific implementation of a method that is already defined in its superclass.
Polymorphism in Action
Unlock the power of polymorphism to write flexible and scalable code by treating objects of different classes through a common interface.
Abstract Classes
Learn to create template classes that cannot be instantiated, defining common methods and fields for a group of subclasses while forcing them to provide specific implementations.
Interfaces
Understand interfaces as a pure contract of behaviors. Learn how a class can implement multiple interfaces to achieve a form of multiple inheritance.
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