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Java™ Platform Standard Ed. 6 |
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public interface Observer
A class can implement the Observer
interface when it
wants to be informed of changes in observable objects.
Observable
Method Summary | |
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void |
update(Observable o,
Object arg)
This method is called whenever the observed object is changed. |
Method Detail |
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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.
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Java™ Platform Standard Ed. 6 |
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