Chapter 16. Design Patterns

Terms you'll need to understand:

• Design pattern

• Proxy

• Adapter pattern

• Decorator pattern

• Business delegate pattern

• Data Access Object (DAO) pattern

• Value Object pattern

• Model-View-Controller (MVC) pattern

Techniques you'll need to master:

• Selecting the design pattern that works best for a given situation

• Identifying a design pattern from the situation it solves

• Recognizing real design patterns from other solution approaches

• Knowing how to encapsulate a design pattern in code

• Knowing how to apply a design pattern to different scales

• Matching design patterns with their benefits

In this chapter, you learn about design patterns , a systematic approach to designing software that Sun is advocating engineers use for Java and requires candidates to use for the Sun Certified Java Developer (SCJD) certification. Throughout this chapter, you learn the basics of design patterns so that you can complete a solution using them.