GofPatterns
SiteMap
Design Patterns Course
Behavioral Patterns
Creational Patterns
Structural Patterns
Behavioral Patterns
«Prev
Next»
Design Patterns
Defining Patterns
Three Types Design Patterns
Behavioral Creational Structural
Design Pattern Components
Design Pattern Benefits
Design Pattern Scope
Three Categories Patterns
Singleton Patterns
Singleton Pattern-Quiz
Real World Examples
Design Pattern Elements
Creational Patterns
Factory Method Consequences
Factory Method-Exercise
Common Creational Patterns
Structural Patterns
Structural Pattern Example
Patterns Help Programmers
Common Structural Patterns
Flyweight Pattern
Flyweight Consequences
GOF Structural Patterns
Adapter Bridge Composite
Flyweight Suitability
Behavioral Patterns
Define Behavioral Patterns
Mediator Pattern Applicability
Observer Pattern Tradeoffs
Designing Software
How to Choose Pattern
Combine Design Patterns
Design Pattern Limitations
How To Apply Pattern
Time Observer Interface - Exercise
The Observer pattern
Objective:
Write a TimeObserver interface.
Define an interface (Java) or abstract class (C++) called
TimeObserver
that has the following structure:
TimeObserver class with a timeChanged method
In the text area below, type your answer and click the
Submit
button.
Submit