Uncle Bob's Agile Development Corner
ObserverEvolving into a pattern, Part 1
by Robert C. Martin
Listing 10. MockTimeSource.java.
public class MockTimeSource implements TimeSource
private ClockObserver itsObserver;
public void setTime(int hours, int minutes, int seconds)
itsObserver.update(hours, minutes, seconds);
public void setObserver(ClockObserver observer)
itsObserver = 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 firstname.lastname@example.org.