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Observer
interface when it
wants to be informed of changes in observable objects.
Method Summary | |
void | update(Observable o,
java.lang.Object arg)
This method is called whenever the observed object is changed. |
Method Detail |
public void update(Observable o, java.lang.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
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