TimeSource.java.

Uncle Bob's Agile Development Corner
OBSERVER—Evolving into a pattern, Part 2
by Robert C. Martin
Listing 4. TimeSource.java.


public interface TimeSource
{
    public void registerObserver(ClockObserver observer);
}

About the Author

Robert C. Martin is president of Object Mentor Inc., a firm that offers high-level, OO software design consulting, training, and development services. He is the author of Designing Object Oriented C++ Applications Using the Booch Method. He can be contacted at [email protected].