public interface Observer
Observer
is meant as a listener to receive changes in a
corresponding Observable
Object.
Modifier and Type | Method and Description |
---|---|
void |
update(Observable observable,
java.lang.Object object)
This method will be called if the underlying
Observable has been
changed. |
void update(Observable observable, java.lang.Object object)
Observable
has been
changed.observable
- the changed Observable
object
- any passed data Object, can be null