What are design patterns and how do abstract classes fit in?

What are design patterns and how do abstract classes fit in?

Design patterns are typical solutions to common problems in software design. Abstract classes are used in many design patterns to define a base class that other classes can inherit from.

Can you give me an example of a design pattern that uses abstract classes?

Sure! The Template Method pattern is a great example. It defines the skeleton of an algorithm in an abstract class, allowing subclasses to override specific steps.

How does the Template Method pattern work in practice?

In practice, you create an abstract class with a method that outlines the steps of the algorithm. Subclasses implement the specific steps, allowing for flexibility while maintaining a consistent structure.

What are the benefits of using abstract classes in design patterns?

Using abstract classes promotes code reusability, enforces a contract for subclasses, and helps in organizing code by separating common behavior from specific implementations.