![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() | Data Access and Operations - slide 42 : 45 |
The Observer is often used to ensure a loose coupling between an application and its user interface
In general, Observer can be used whenever a set of observer objects need to be informed about state changes in a subject object
![]() | Templates of the Subject class and the SubjectState class. |
![]() | A templates of the Observer class. |
![]() | Application of the Subject and Observer classes. |