Social networking sites make it easy for people to stay in touch. Suppose you need to design a very simple social networking program that allows a user to post messages to all of his or her friends, so that when one of the user’s friends logs into the program, the friend sees the message. Assume that friends must be confirmed, and that once a friendship is confirmed, each user is a friend of the other.
a. Write a specification for this problem. Note that a person may have many friends.
b. Design a solution to this problem. Determine what objects (with their data fields and methods) would be necessary to solve this problem.
c. Draw a UML diagram that reflects your design in part b.
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