Key Component of Facade Method Design Pattern in Java

The key components of the Facade Method Design Pattern in Java:

• Subsystem:
  • Represents the complex part of the system that the Facade aims to simplify.
  • Comprises multiple classes and interfaces that collaborate to provide a set of functionalities.
  • Clients typically should not interact with the Subsystem directly, but only through the Facade.
• Facade:
  • The heart of the pattern.
  • Acts as a simplified, unified interface to the Subsystem.
  • Clients interact exclusively with the Facade, not with the underlying Subsystem classes.
  • Typically has methods that delegate calls to appropriate classes within the Subsystem, hiding their complexity.
• Client:
  • Represents any code that needs to utilize the Subsystem’s functionality.
  • Interacts solely with the Facade, unaware of the Subsystem’s internal structure.
  • Benefits from the simplified interface provided by the Facade, making code more concise and maintainable.

Facade Method Design Pattern is a structural design pattern that provides a simplified interface to a complex subsystem. It acts as a “front door,” concealing the internal complexity of the subsystem and making it easier for clients to interact with it. In this article, we will get to know about what is Facade Method Design Pattern in Java, and why we need Facade Method Design Pattern in Java, with the help of a problem statement and solution