CSE 142 Summer 2011 Programming Assignment 1 Song 10 points Due Tuesday June 28 2011 11 00 PM Program Description This program tests your understanding of static methods and println statements Write a Java class called JackBuilt in a file named JackBuilt java Use exactly this file name including identical capitalization A cumulative song is one where each verse builds upon previous verses Examples of cumulative songs are The Twelve Days of Christmas and There Was An Old Lady Who Swallowed A Fly For this assignment you will write a program that outputs the following cumulative song a variation of a classic song called The House That Jack Built This is the house that Jack built The first seven verses printed by your program must exactly reproduce the output at left This includes identical wording spelling spacing punctuation and capitalization This is the malt That lay in the house that Jack built This is the rat That ate the malt That lay in the house that Jack built However to encourage creativity the last verse of your song the final bold part in may print any text you like Creative verses submitted may be shown in class anonymously at a later date The only restrictions on your custom verse are the following This That That That is the cat killed the rat ate the malt lay in the house that Jack built This That That That That is the dog worried the cat killed the rat ate the malt lay in the house that Jack built This That That That That That is the cow with the crumpled horn tossed the dog worried the cat killed the rat ate the malt lay in the house that Jack built This That That That That That That is the maiden all forlorn milked the cow with the crumpled horn tossed the dog worried the cat killed the rat ate the malt lay in the house that Jack built The verse must not be identical to another verse or consist entirely of text from earlier in the song The number of total lines in the verse should be at least three 3 but no more than fifty 50 The text of the verse should not include hateful offensive or otherwise inappropriate speech The code to produce the verse is still subject to the style guidelines on the next page your custom 8th verse goes here One way to write this program would be to simply write a series of println statements that output each line of the song in order But such a solution would not receive full credit Part of the challenge of this assignment lies in recognizing the structure and redundancy of the song and improving the code using static methods continued on back 1 of 2 Style Guidelines You should not place any println statements in your main method It is okay for main to have empty println statements to print blank lines Instead of printing in main use static methods for two reasons 1 Structure You should write static methods to capture the structure of the song You should for example have a method for each of the verses of the song including your custom verse to print that verse s entire contents 2 Eliminating redundancy You should use only one println statement for each distinct line of the song other than blank lines For example the following line appears several times in the output but you should have only one println statement in your program that prints that line of the song That lay in the house that Jack built But it is not good style to have lots of methods that each print just one line Instead identify groups of lines that appear in multiple places in the song and create methods to represent those groups There is a general cumulative structural redundancy to the song that you should eliminate with your methods Recall that methods can call other methods which can themselves call other methods and so on The key question to ask is whether you have repeated lines or groups of lines of code that could be eliminated if you structured your methods differently This includes sequences of println statements and also repeated sequences of method calls You do not have to eliminate partial redundancy in lines that are similar but not identical such as the following We suggest ignoring the partial similarity and treating them as though they were entirely different lines This is the malt That ate the malt Include a comment at the beginning of your program with some basic information and a description of the program in your own words For example Suzy Student CSE 142 Autumn 2049 Section XX Programming Assignment 1 06 07 49 This program s behavior is For this assignment you should limit yourself to the Java features covered in Chapter 1 of the textbook Though we will cover Chapter 2 while you work on this assignment please do not use Chapter 2 features on this program such as mathematical expressions or for loops As a point of reference our solution to this program has roughly 14 methods other than main and is around 90100 lines long including comments and blank lines or 51 substantive lines when we paste it into our Indenter Tool on the course web site But these are just rough guidelines you do not have to match them exactly Submission and Grading Turn in your Java source code file electronically from the Homework page on the course web site Part of your program s score will come from its external correctness External correctness measures whether the output matches exactly what is expected We are very picky about the output matching exactly Every character and space must match Programs that do not compile will receive no external correctness points The rest of your program s score will come from its internal correctness Internal correctness measures whether your source code follows the style guidelines specified in this document This includes having an adequate comment header and capturing the structure and redundancy of the song as specified previously You should also limit the length of each line in your program to fewer than 100 characters 2 of 2
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