Explore key concepts, practice flashcards, and test your knowledge — then unlock the full study pack.
The Strategy Pattern is fundamental in software design. It encapsulates algorithms into distinct classes, enabling runtime behavior selection. With the Context class holding a reference to a Strategy instance, it can switch strategies dynamically to suit various needs. Key components include:
In Dependency Injection, classes receive their dependencies externally, which enhances flexibility and facilitates easier testing.
In real-world applications, the Strategy Pattern is exemplified in a Payment Processing System, allowing various payment methods such as credit card, PayPal, or Bitcoin. The key components include:
This modularity promotes adaptability; new payment methods can be added without disrupting existing operations.
The Strategy Pattern and Dependency Injection rely on key design principles:
Understanding these principles allows developers to build scalable and maintainable systems efficiently.
What is the Strategy Pattern?
The Strategy Pattern is a behavioral design pattern that enables the selection of an algorithm's behavior at runtime by encapsulating different algorithms within strategy classes.
What is Dependency Injection?
Dependency Injection is a design pattern that allows a class to receive its dependencies from an external source, improving code modularity and testability.
What does the Single Responsibility Principle state?
The Single Responsibility Principle states that a class should have only one reason to change, which reduces the impact of changes and increases maintainability.
Click any card to reveal the answer
Q1
What does the Strategy Pattern enable?
Q2
In the payment processing system example, what does PaymentContext do?
Q3
What does the Open-Closed Principle imply?
Upload your own notes, PDF, or lecture to get complete study notes, dozens of flashcards, and a full practice exam like the one above — generated in seconds.
Sign Up Free → No credit card required • 1 free study pack included