5 Questions
What is the principle of composition over inheritance in object-oriented programming?
The principle of composition over inheritance states that classes should favor polymorphic behavior and code reuse by containing instances of other classes that implement the desired functionality, rather than inheriting from a base or parent class.
How does an implementation of composition over inheritance typically begin?
An implementation typically begins with the creation of various interfaces representing the behaviors that the system must exhibit, which can facilitate polymorphic behavior.
What are the classes implementing the identified interfaces built and added to?
The classes implementing the identified interfaces are built and added to business domain classes as needed.
How are alternative implementations of system behaviors accomplished in composition over inheritance?
Alternative implementations of system behaviors are accomplished by providing another class that implements the desired behavior interface.
What can a class that contains a reference to an interface support?
A class that contains a reference to an interface can support implementations of the interface, a choice that can be delayed until runtime.
Test your understanding of the Composition over Inheritance principle in object-oriented programming with this quiz. Assess your knowledge of favoring polymorphic behavior and code reuse through composition, and learn about the benefits of this approach in OOP design.
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