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Jasper Reports Developer Interview Question:
How the Observer and Observable used in Java Programming?
Submitted by: MurtazaObjects 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.
Submitted by: Murtaza
Submitted by: Murtaza
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