In an e-mail system messages are stored in a mailbox draw a


Problem

1. In an e-mail system, messages are stored in a mailbox. Draw a UML diagram that shows the appropriate aggregation relationship.

2. You are implementing a system to manage a library, keeping track of which books are checked out by whom. Should the Book class aggregate Patron or the other way around?

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JAVA Programming: In an e-mail system messages are stored in a mailbox draw a
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