CS 5JA, Winter 2009
Assignment 2 - Process user input, and modify a class

Due: Sunday, January 25, 9:00 pm
Worth: 100 homework points

1. Write the application specified in Exercise 2.15 on page 68 of the text.
   • The source code file must be named IntCalc.java (or the turn-in program will not accept it).
   • See the instructions and the similar application in the text (Fig. 2.7) for guidance.
   • Calculate the difference as the first number entered minus the second number, and calculate the quotient as the first number entered divided by the second number. (And don't worry if the quotient's value is not precise - that is due to integer division rules.)
   • Try to match these sample IntCalc runs from our solution.
     (Note: Be aware that we probably will use test data that differ from these sample runs. This notice applies to all 5JA assignments.)
2. Write the application specified in Exercise 2.26 on page 70 of the text.
   • CheckMultiple.java must be the exact name of the source code file.
   • See the instructions in the text (and notice the hint).
   • Match these sample CheckMultiple runs from our solution.
3. Modify class GradeBook as specified in Exercise 3.11 on page 104 of the text.
   • Begin with this copy of GradeBook.java (just slightly modified from the version shown in Fig. 3.10 on pp. 88-89 of the text), and follow the instructions in that file.
   • You must use setInstructorName for the name of the set method, and getInstructorName for the get method's name (or the test program will not compile).
   • When you are ready to test your modified class, download and use this specialized version of GradeBookTest.java to do so.
   • Be sure the results exactly match those in this GradeBookTest run from our solution.
4. Turn in IntCalc.java, CheckMultiple.java and GradeBook.java here before the deadline.

Updated 1/14/09, by C. Michael Costanzo