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Observer.javaAPI DocExample929Fri Nov 03 10:59:54 GMT 2006None

Observer

public interface Observer
A class can implement the Observer interface when it wants to be informed of changes in observable objects.
author
Chris Warth
version
1.19, 12/19/03
see
java.util.Observable
since
JDK1.0

Fields Summary
Constructors Summary
Methods Summary
public voidupdate(Observable o, java.lang.Object arg)
This method is called whenever the observed object is changed. An application calls an Observable object's notifyObservers method to have all the object's observers notified of the change.

param
o the observable object.
param
arg an argument passed to the notifyObservers method.