Classification of design patterns

Patterns can be classified

• With respect to purpose.
• With respect to scope.

With respect to purpose, patterns are classified to Creational, Structural and Behavioral. For example,

• The Observer pattern is a behavioral pattern (because it help us model the behavior and interactions of objects)
• The Builder pattern is a creational pattern (because it details how an object can be created in a particular way) and so on.

Here is the complete classification diagram.