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
For further API reference and developer documentation, see Java SE Documentation. That documentation contains more detailed, developer-targeted descriptions, with conceptual overviews, definitions of terms, workarounds, and working code examples.
Copyright © 1993, 2020, Oracle and/or its affiliates. All rights reserved. Use is subject to license terms. Also see the documentation redistribution policy.