11. Template Method
Template Method
ND079 JPND C2 L03 A12 Template Method
What is the Template Method Pattern?
- You define a base class or interface for a procedure or algorithm, but leave empty placeholders for some parts of the procedure.
- Each placeholder is a blank or default method in the base class.
- This base class acts as a template.
- Callers fill in the blanks by extending the base class and overriding the placeholder methods.
SOLUTION:
- Open-Closed Principle
- Liskov Substitution Principle
- Dependency Inversion Principle
QUIZ QUESTION::
Match each behavioral design pattern with its description.
ANSWER CHOICES:
|
Description |
Pattern |
|---|---|
Different implementations of a task interface can be swapped at runtime. |
|
Subclasses extend a base class and override different placeholder methods. |
|
A "subject" notifies one or more subscribers that something has changed about the subject. |
SOLUTION:
|
Description |
Pattern |
|---|---|
|
A "subject" notifies one or more subscribers that something has changed about the subject. |
|
|
Subclasses extend a base class and override different placeholder methods. |
|
|
Different implementations of a task interface can be swapped at runtime. |