public interface Observer
Observer
interface when it
wants to be informed of changes in observable objects.Observable
Modifier and Type | Method and Description |
---|---|
void |
update(Observable o,
Object arg)
This method is called whenever the observed object is changed.
|
void update(Observable o, Object arg)
notifyObservers
method to have all the object's
observers notified of the change.o
- the observable object.arg
- an argument passed to the notifyObservers
method. Submit a bug or feature
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