How are Observer and Observable used? Ans. 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. - Study24x7
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05 Dec 2023 10:21 AM study24x7 study24x7

How are Observer and Observable used? Ans. 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 interf...

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