Chapter 3, Problem 51E

Use a combination of code reading, execution of methods, breakpoints, and single stepping to familiarize yourself with the Mai1Item and MailClient classes. Note that we have not yet discussed enough for you to understand the implementation of the MailServer class, so you can ignore this for now. (You can, of course, look at it if you feel adventurous, but don't be surprised if you find it slightly baffling ...) Explain in writing how the Mai 101 lent and Mail Item classes interact. Draw object diagrams as part of your explanations.