Uncle Bob's Agile Development Corner
ObserverEvolving into a pattern, Part 1
by Robert C. Martin
Listing 15. MockTimeSource.java.
- By Robert C. Martin
- July 24, 2001
public class MockTimeSource implements TimeSource
private Vector itsObservers = new Vector();
public void setTime(int hours, int minutes, int seconds)
Iterator i = itsObservers.iterator();
ClockObserver observer = (ClockObserver) i.next();
observer.update(hours, minutes, seconds);
public void registerObserver(ClockObserver observer)
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].