Observer<U> Interface
Type Parameters
- U
Observer class template parameter.
public interface Observer
A class can implement the Observer interface when it wants to be informed of changes in observable objects.
Method Summary
| Modifier and Type | Method and Description |
|---|---|
| void |
update(final Object sender, U arg)
This method is called whenever the observed object is changed. |
Method Details
update
public void update(final Object sender, U arg)
This method is called whenever the observed object is changed.
Parameters:
sender
- Observable object.
arg
- an argument passed to the system.fabric.Observable#notifyObservers(Object, Object) method.
