Observer and Observable used

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Observer and Observable used

Thu Nov 06, 2008 3:51 pm

How are Observer and Observable used?



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Re: Observer and Observable used

Thu Nov 06, 2008 3:51 pm

Objects that subclass the Observable class maintain a list of observers. When an Observable object is updated it invokes the update() method of each of its observers to notify the observers that it has changed state. The Observer interface is implemented by objects that observe Observable objects.

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