CSSE 220 -- Object-oriented Software Development

Homework 4, due at the beginning of your Day 5 class period.

1. Complete the assigned reading for the next session (see the course schedule). If there is something you do not understand, make note of it so you can ask about it.
   Estimated time: 20 minutes.
2. No Angel quiz this time. The next ANGEL quiz will include material from this reading assignment
3.
The quiz should be available late Thursday afternoon.  Estimated time (after reading the material): 20 minutes.
3. No written exercises this time.
4. Finish the Points, Rectangles, and Circles Exercise begun in today's class.  I.e. write the remainder of the Point, Rectangle, and Circle methods described in the class handout.  Also write sufficient additional code to test the methods, and javadoc for everything.  Estimated time: 50-60 minutes if you are a student who did well in 120 and are still confident about the Object-oriented material from that course.  If you are very shaky on that material and find this assignment difficult, you need to keep pressing on, get help as needed, and get it done.  I recommend for everyone that you start this assignment during the first class period during which you do not have class, so that you can scope out whether you are likely to need help, and plan to go to the lab this afternoon or this evening.
   
   If you find yourself spending more than 5 minutes on any method (except possibly the intersects/intersection methods), you should probably skip that method, move on and do some others, and come back to the hard one if you get time later.

   There is one method that you are not required to do: clone( ). And one method that is trickier than I originally thought: the intersects(Rectangle r) method of the Circle class. At first I was erroneously thinking that you only needed to check whether the circle's boundingBox intersects the Rectangle. As you probably already know, that is a necessary but not sufficient condition for intersection. But there are other things you must check also

   One more note on intersects and intersection:  I am referring to intersections of the boundaries and/or interiors of the rectangles, not just the boundaries.  Thus if one rectangle completely contains another one, we will consider them to intersect.

5. Grace Period and turnin.  You should do your very best to complete this exercise by Tuesday's class time.  But I recognize that there is only one day between Monday and Tuesday, and that other classes may have one-day assignments also.  Thus I will allow you to submit this one until Tuesday at 11:59 PM
   
   To turn this in, place it in your SVN repository for this course.  You can wait until after Tuesday's class, since during that class we will have a refresher on how to use SVN with Subclipse.