Behavioral design patterns

Behavioral design patterns are design patterns that deal with communication between objects. These design patterns allow your objects to communicate in a way that avoids the common issues that developers face related to object behavior. There are many patterns in this category:

• The chain-of-responsibility pattern
• The command pattern
• The interpreter pattern
• The iterator pattern
• The mediator pattern
• The memento pattern

• The observer pattern
• The state pattern
• The strategy pattern
• The template-method pattern
• The visitor pattern

In this book, however, we are only going to talk about the following behavioral design patterns:

• The command pattern
• The observer pattern
• The strategy pattern

If you want to find out more, refer to the Design Patterns: Elements of Reusable Object-Oriented Software book by the Gang of Four that we mentioned earlier.

...