27.3.9. Decorator Pattern

Try these first

1. 1.

   What is the main purpose of the Decorator Pattern?

   Hint

   Think about how you can modify something while keeping the original intact.

2. 2.

   Give an example of a GUI component that could use the Decorator Pattern.

   Hint

   Consider how you interact with user interfaces.

3. 3.

   What is the main advantage of the Decorator Pattern?

   • It modifies existing classes
   • It allows behavior to be added at runtime
   • It complicates code structure

   Hint

   Consider how the pattern operates.

4. 4.

   True or False: The Decorator Pattern encourages tightly coupling classes.

   • True
   • False

   Hint

   Think about how the pattern is designed.

5. 5.

   Design a system for a library checkout using the Decorator Pattern. Identify the base class and potential decorators.

   Hint

   Think about how you can enrich the basic book functionality.

6. 6.

   Create a diagram illustrating how decorators wrap a basic object. What insights can you gain from this visual representation?

   Hint

   Visualize the layers and their interactions.