Homework 3 - Defining your own classes

Due date:   Tuesday, Oct. 4

• Carefully read and study Chapter 4 (and see problem 13, p. 216).
• Write and compile a Java program to solve the following problem:
  MyJava Coffee Outlet runs a catalog business. It sells only one type of coffee beans,
  harvested exclusively in the remote area of Irian Jaya. The company sells the coffee
  in 2-lb bags only, and the price of a single bag is $5.50. When a customer places an order,
  the company ships the order in boxes. The boxes come in three sizes: a large box holds 20 bags,
  a medium box holds 10 bags, and a small box holds 5 bags. The cost of a large box
  is $1.80; a medium box, $1.00; and a small box, $0.60.

  An order is shipped according to the following rule:

  • Always fill the boxes so that all boxes are filled to capacity, except possibly one
    small box may not be entirely full.
  For example, 17 bags would be shipped in 1 medium box and 2 small boxes and 79 bags would be
  shipped in 3 large boxes, 1 medium box, and 2 small boxes.

  Develop an application that computes the total cost of an order. Use any appropriate technique for
  input and output. Display the output in the following format:

  Number of Bags Ordered: 98 - $ 539.00
  
  Date of Order:	Sep 20, 2005
  
  
  Boxes Used:
  
  		4 Large -  $7.20
  
  		1 Medium - $1.00
  
  		2 Small -  $1.20
  
  
  Your total cost is: $ 548.40
  
  

  • Hint: To find the boxes used, use a combination of integer division (/), the mod
    operator (%), and the ceiling function (ceil) from the Math class.
• Notes: Some classes you will find useful in this assignment:
  • Date class, p.62
  • DecimalFormat class, p.101
  • Math class, p.113
  • Standard Output using System.out, p.102
• Your program must consist of two files:  MainCoffee.java  and MyJava.java.
  The MainCoffee class creates a MyJava object and performs the I/O using this MyJava object.
  The MyJava class has methods to compute the number of large, medium, and small boxes.
  It also should contain methods to compute the coffee price and total price.
• Update (9/26): Since this is your first time writing your own class,
  I've decided to supply you with MainCoffee.java.
• Submit your program according to: Guidelines for Project Submissions
• The beginning comments of your .java file should at least include:
  • Name:   <Your Name>
    Homework No.:   3
    Course Name:   CSC 211
    Section No.:   <101>
    Brief description of what the program is designed to do.
  • Good luck and have fun!

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