Com S 362 --- Object-Oriented Analysis and Design

		HOMEWORK 2: IMPLEMENTING ADTS IN JAVA
		 (File $Date: 2003/01/21 18:55:16 $)

Due: January 29, 2003.

The purpose of this homework is to have you learn how to implement
classes in Java, and to get a feel for a sensible ADT design.
You will also learn how to run JUnit tests.

This is an individual homework, and is not to be done in teams.

READINGS

Read chapter 2 of Ken Arnold, James Gosling, and David Holmes's
book The Java Programming Language Third Edition (Addison-Wesley,
Reading, Mass., 2000).   If you are new to Java you might
also want to read the interesting (to you) parts of the "new to Java"
section on-line at

  http://developer.java.sun.com/developer/onlineTraining/new2java/

1. (100 points) [TimeOfDay and Appointment]

   Copy the Java files in the directory
      /home/course/cs362/public/homework/hw2/cal
   to a package named "cal" in an Eclipse Java project, or to a
   directory named "cal" if you aren't using Eclipse.  This directory
   is also available from the course web page.

   You are to correctly implement the classes TimeOfDay and
   Appointment.  Do this by
   filling in all of the method bodies in the files TimeOfDay.java and
   Appointment.java.  You will have to add some private fields,
   and you can also add any (private, helper) methods that you might need.

   In the directory are also two JUnit test classes.  Use these to
   test your code.

HINTS
   
   Use Eclipse.  Read the books and other information about Java as needed.

TESTING

Your code should compile, and run correctly under Java 1.4.1 (or
1.3.1, which you may have to use if you have a Mac).  Test your
program using our JUnit test classes. 

WHAT TO HAND IN

Hand in a printout of all of the code you wrote. By doing this you
certify that your code works correctly.  If your code does not work
correctly you can still hand it in for partial credit, but attach an
explanation of what about it does not work.

GRADING

You will be graded, in part, on how clear your code is.  Excessively
long code will be penalized: don't repeat code in multiple places,
don't write the same expression in multiple places.  Be sure your code
has javadoc comments for all fields and methods that you add.  Your
code should be sensibly indented so it is easy to read (Eclipse can do
this for you automatically.)  It's important to get all of our
test cases to pass.  Make all of the fields in
the classes you write private.

Be sure your name is in the comments in your code.