Sun Certified Enterprise Architect for J2EE™ Technology Study Guide

4.3. Behavioral Patterns

Behavioral patterns influence how state and behavior flow through a system. By optimizing how state and behavior are transferred and modified, you can simplify, optimize, and increase the maintainability of an application.

The following Behavioral patterns are described:

• Chain of Responsibility

• Command

• Interpreter

• Iterator

• Mediator

• Memento

• Observer

• State

• Strategy

• Template Method

• Visitor

Chain of Responsibility Pattern

The Chain of Responsibility pattern establishes a chain within a system, so that a message can either be handled at the level where it is first received, or be directed to an object that can handle it. Figure 4-13 illustrates the Chain of Responsibility pattern.

Figure 4-13. The Chain of Responsibility Pattern

BENEFITS ...