• Chapter 1

  • What does the picture on the cover of the paperback edition of JOI represent? Why is it appropriate? (If you have the hardback version you can see the picture on the CD or this web page).

  • Modify the Bank so that the transaction prompt shows the current account number.

• Chapter 2

  • Find all the places in Temperatures.java (or some other Java code) in which a message is sent to an object that's not a Terminal . (There are so many of those that including them in this discussion would be tedious.) For each one, identify
    • the name of the message,
    • the name and type of the object receiving the message,
    • the type of the arguments (the information sent along with the message),
    • the file in which you would expect to find the corresponding method (you need not find that file) and,
    • the type of value returned by the method.

  • An exercise asking for the use of DecimalFormat objects.

• Chapter 3

• Chapter 4

  • Add . and .. to the output specified for a Directory listing.

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