Interface java.util.Observer 
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Interface java.util.Observer

public interface Observer
extends Object
When implemented, this interface allows all classes to be observable by instances of class Observer.

Method Index

o update(Observable, Object)
Called when observers in the observable list need to be updated.

Methods

o update 
  public abstract void update(Observable o,
                              Object arg)
Called when observers in the observable list need to be updated.
Parameters:
o - the list of observers
arg - the argument being notified 
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