handout #2
CSE142—Computer Programming I
Programming Assignment #1
due: Wednesday,
10/5/16, 9 pm
Your first program will require the use of
static methods and println statements. This assignment is worth 10 points instead of
the normal 20 points. You are going to
write a Java program that produces as output a cumulative song in which successive verses build on previous verses
(as described in http://en.wikipedia.org/wiki/Cumulative_song). Your program should produce as output the
following song:
There was an old woman who swallowed a fly.
I don't know why she swallowed that fly,
Perhaps she'll die.
There was an old woman who swallowed a spider,
That wriggled and iggled and jiggled inside her.
She swallowed the spider to catch the fly,
I don't know why she swallowed that fly,
Perhaps she'll die.
There was an old woman who swallowed a bird,
How absurd to swallow a bird.
She swallowed the bird to catch the spider,
She swallowed the spider to catch the fly,
I don't know why she swallowed that fly,
Perhaps she'll die.
There was an old woman who swallowed a cat,
Imagine that to swallow a cat.
She swallowed the cat to catch the bird,
She swallowed the bird to catch the spider,
She swallowed the spider to catch the fly,
I don't know why she swallowed that fly,
Perhaps she'll die.
There was an old woman who swallowed a dog,
What a hog to swallow a dog.
She swallowed the dog to catch the cat,
She swallowed the cat to catch the bird,
She swallowed the bird to catch the spider,
She swallowed the spider to catch the fly,
I don't know why she swallowed that fly,
Perhaps she'll die.
<< Your custom sixth
verse goes here >>
There was an old woman who swallowed a horse,
She died of course.
As indicated above, you should include a
custom sixth verse that matches the pattern of the first five verses. You must exactly reproduce the format of this
output.
Most of our assignments will have a
creative aspect where you have more flexibility than normal to come up with your
own solution. For this assignment, it
involves writing a sixth verse that fits the pattern of the first five. For example, some versions of the song have a
sixth verse for swallowing a goat (“Just opened her throat to swallow a goat”). Notice that the first two lines should either
end in the same word (fly/fly, bird/bird, cat/cat, etc) or should end with
rhyming words (spider/inside her). You
are not allowed to simply copy one of the previous animals or to use the verses
you’ll find on the web (e.g., goat and cow).
You have to write your own verse.
The text of the verse should not include hateful, offensive, or
otherwise inappropriate speech.
You are to make
use of static methods to avoid the “simple” redundancy. In particular, you are to make sure that you
use only one println statement for each distinct line
of the song. For example, this line:
Perhaps she'll die.
appears several times in
the output. You are to have only one println statement in your program for producing this
line. The more complex redundancy has to
do with pairs of lines like these:
There was an old woman who swallowed a horse,
There was an old woman who swallowed a dog,
and like these:
She swallowed the dog to eat the cat,
She swallowed the cat to eat the bird,
It is not possible to avoid this
redundancy using just methods and simple println
statements, so you are not expected to do so.
There is, however, a structural redundancy that you can eliminate with
static methods and this will be worth a point.
The key question to ask yourself is whether or not you have repeated
lines of code that could be eliminated if you structured your static methods
differently.
You should also be using static methods to
capture the structure of the song. You must,
for example, have a different method for each of the seven verses of the song
(verses are separated by blank lines in the output). As a result, you will not have any println statements in main except perhaps a println that produces a blank line.
You are not allowed to use more advanced
features than what we have covered in class.
For this assignment, you should limit yourself to the Java features covered
in chapter 1 of the text. You should not
use System.out.print statements or the \n escape
sequence even though they are covered in chapter 1.
You should include a comment at the
beginning of your program with some basic information and a description of the
program, as in:
// Stuart Reges
// 9/4/16
// CSE142
// TA: Stephen Colbert
// Assignment #1
//
// This program will...
You should name your file Song.java and
you should turn it in electronically from the “homework” link on the class web
page.