Basic Java programming tutorials for learning Java fundamentals.
Process of including methods and variables of base class into its child class is known as Inheritance. The core benefit of Inheritance is code reusability. In case of shared code, move it to base class to refractor and improve the code. It is also a process in which characteristics of one object are transferred into another object.
Two main forms of inheritance are as following: Implementation inheritance: Functionality of the parent class is reused in the child or derived
The concept of inheritance is based on “is a” relationship. Composition is based on “has a” relationship. Both of these two concepts allow placing sub objects into your class. Below image explains this key relationship. Inheritance Vs Composition
Inheritance is based on one direction concept. You can not apply it in reverse. Extends keyword is used to specify inheritance.
Composition is used in cases in which