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Subject of observation.
Method Summary | |
void |
addObserver(Observer observer)
Adds an Observer . |
void |
notifyObservers(java.lang.Object argument)
Notifies Observer s of a change. |
void |
removeObserver(Observer observer)
Removes an Observer . |
Method Detail |
public void addObserver(Observer observer)
Observer
.
public void removeObserver(Observer observer)
Observer
.
public void notifyObservers(java.lang.Object argument)
Observer
s of a change.
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