Explain the Facade Pattern and its benefits.

Beginner

Answer

The Facade pattern provides a simplified interface to a complex subsystem. It hides the complexity of the system and provides an easier interface for clients.

Benefits:

  • Simplifies client interaction
  • Reduces dependencies on internal classes
  • Promotes loose coupling
  • Makes the subsystem easier to use

Example:
A computer facade that hides the complexity of starting CPU, memory, hard drive, etc., and provides a simple start() method.