Structural Pattern
Structural Design Patterns are Design Patterns that ease the design by identifying a simple way to realize relationships between entities.
Adapter
Match interfaces of different classes
Bridge
Separates an object’s interface from its implementation
Composite
A tree structure of simple and composite objects
Decorator
Add responsibilities to objects dynamically
Facade
A single class that represents an entire subsystem
Flyweight
A fine-grained instance used for efficient sharing
Private Class Data
Restricts accessor/mutator access
Proxy
An object representing another object