What is the difference between Composition and Inheritance?

Inheritance and Composition are known to be two terms that are used in Java. Composition means that the code can be reused without the need to extend it while inheritance will be used in order to extend the class for the reuse of code or overall functionality.

Between the two, the composition is known to be better for testing since this will provide the ability of the class to be tested properly. You can also use composition over inheritance when you are trying to do a decorator design pattern because this will be easier to use. The relationship that is being shown by inheritance is “is-a” while in composition, it is “has-a.”

Are you familiar with Inheritance and Composition? In layman’s terms, the inheritance would mean the properties and other items that you may receive from a family member or someone close to you after the person has passed on.

The composition will refer to something that you have created, whether in the form of literature or the form of the tune and lyrics of a song. These two terms can also be used in Java Application. They are both used for testing, but it seems that a lot of people prefer using composition for testing more than inheritance. The design patterns that these two can show are different too.