Structural Design Patterns

This module introduces structural patterns, which is how to compose classes and objects to build larger systems while keeping them flexible and efficient.

• How programmers use structural patterns
• Characteristics of commonly used structural patterns
• When the Flyweight pattern is appropriate (and when it isn’t)
• How Flyweight applies to the course project

How structural patterns work

Structural patterns focus on composition: arranging objects and classes so they can be combined safely, reused across contexts, and changed with minimal impact.

How they differ from other pattern types

Unlike creational patterns (object creation) and behavioral patterns (collaboration and responsibility), structural patterns address the organization and connections between parts of a system.