Decorator Pattern
Explore the decorator pattern to understand how it dynamically adds functionality to objects without altering their classes. This lesson covers the structural design, Java-based examples like aircraft feature extensions, and practical uses such as Java I/O decorators, helping you create flexible and maintainable code.
We'll cover the following...
What is it ?
A decoration is added to something to make it more attractive, in the same spirit, the decorator pattern adds new functionality to objects without modifying their defining classes.
The decorator pattern can be thought of as a wrapper or more formally a way to enhance or extend the behavior of an object dynamically. The pattern provides an alternative to subclassing when new functionality is desired.
The strategy is to wrap the existing object within a decorator object that usually implements the same interface as the wrapped object. This ...