Assume you are asked to re-implement the notification part of e.centennialcollege.ca by using;observer pattern. When there is a new grade item released or the assignment due date is two days;away, those students who register the notification could receive email, or SMS message, or;Twitter message.;You are asked to apply observer pattern in your implementation, and not allowed to use Java;built-in support for observer pattern.;You also need to provide the class diagram of your solution [2 marks].;Create a driver class to test your implementation.
Paper#64324 | Written in 18-Jul-2015Price : $27