Ask a Question
Advertise on boostr.in
Organizational Research By
Surprising Reserch Topic
boostr.in questions - Question:How are Observer and Observable used?
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.
Sep 13, 2013
Java Interview Questions
Sep 12, 2013
to add a comment.
Related Hot Questions
Your name to display (optional):
Email me at this address if my answer is selected or commented on:
Email me if my answer is selected or commented on
Privacy: Your email address will only be used for sending these notifications.
To avoid this verification in future, please