Java: An Introduction to Problem Solving and Programming (7th Edition)
7th Edition
ISBN: 9780133766264
Author: Walter Savitch
Publisher: PEARSON
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Textbook Question
Chapter 5, Problem 6E
Consider a class that keeps track of the sales of an item. An object of this class will have the attributes
- Number sold
- Total sales
- Total discounts
- Cost per item
- Bulk quantity
- Bulk discount percentage
and the following methods:
- registerSale (n) records the sale of n items. If n is larger than the bulk quantity, the cost per item will be reduced by the bulk discount.
- displaySales displays the number sold, the total sales, and total discount.
- a. Implement the class in Java.
- b. Write some Java statements that test the class.
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Consider a class that keeps track of the sales of an item. An object of this class will have the attributes
Number sold
Total sales
Total discounts
Cost per item
Bulk quantity
Bulk discount percentage and the following methods:
registerSale(n) records the sale of n items. If n is larger than the bulkquantity, the cost per item will be reduced by the bulk discount.
displaySales displays the number sold, the total sales, and total discount.
Implement the class in Java.
Write some Java statements that test the class.
Write a java program in a class CountPoor that counts the number of families that are considered poor. Write and use a class Family that has the attributes.
income—a double value that is the income for the family
size—the number of people in the family and the following methods:
Family(income, size)—a constructor that sets the attributes
isPoor(housingCost, foodCost)—a method that returns true if housingCost + foodCost * size is greater than half the family income (foodCost is the average food cost for an individual, while housingCost is for the family)
toString—a method that returns a string containing the information about the family
The program should read an integer k from the keyboard and then create an array of size k whose base type is Family. It should then create k objects of type Family and put them in the array, reading the income…
Consider a class that keeps track of the sales of an item. An object of thisclass will have the attributes• Number sold• Total sales• Total discounts• Cost per item• Bulk quantity• Bulk discount percentageand the following methods:• registerSale(n) records the sale of n items. If n is larger than the bulkquantity, the cost per item will be reduced by the bulk discount.• displaySales displays the number sold, the total sales, and totaldiscount.a. Implement the class in Java.b. Write some Java statements that test the class.
Chapter 5 Solutions
Java: An Introduction to Problem Solving and Programming (7th Edition)
Ch. 5.1 - Consider the program in Listing 5.4 . Suppose you...Ch. 5.1 - Prob. 2STQCh. 5.1 - Prob. 3STQCh. 5.1 - Suppose every species in the world has a peculiar...Ch. 5.1 - Revise the definition of the method writeOutput in...Ch. 5.1 - Revise the definition of the method readInput in...Ch. 5.1 - Revise the definition of the method...Ch. 5.1 - What is the meaning of (int) that appears in the...Ch. 5.1 - Prob. 9STQCh. 5.1 - Define a method called getDensity that could be...
Ch. 5.1 - Define a method called changePopulation that could...Ch. 5.1 - Define a method called changePopulation that could...Ch. 5.2 - In Listing 5.12, we set the data for the object...Ch. 5.2 - Give preconditions and postconditions for the...Ch. 5.2 - What is an accessor method? What is a mutator...Ch. 5.2 - Give the complete definition of a class called...Ch. 5.2 - Prob. 17STQCh. 5.2 - In the definition of the method in Listing 5.15,...Ch. 5.2 - What is a well-encapsulated class definition?Ch. 5.2 - When should an instance variable in a class...Ch. 5.2 - Prob. 21STQCh. 5.2 - In a class definition, is anything private ever...Ch. 5.2 - In a class definition, is the body of any method...Ch. 5.3 - What is a reference type? Are class types...Ch. 5.3 - When comparing two quantities of a class type to...Ch. 5.3 - Prob. 26STQCh. 5.3 - Write a method definition for a method called...Ch. 5.3 - Given the class Species as defined in Listing...Ch. 5.3 - After correcting the program in the previous...Ch. 5.3 - What is the biggest difference between a parameter...Ch. 5.3 - Prob. 31STQCh. 5.3 - Write an equals method for the class Person...Ch. 5.4 - Prob. 33STQCh. 5.4 - Prob. 34STQCh. 5.4 - Prob. 35STQCh. 5.4 - Prob. 36STQCh. 5.4 - Prob. 37STQCh. 5 - Design a class to represent a credit card. Think...Ch. 5 - Repeat Exercise 1 for a credit card account...Ch. 5 - Repeat Exercise 1 for a coin instead of a credit...Ch. 5 - Repeat Exercise 1 for a collection of coins...Ch. 5 - Consider a Java class that you could use to get an...Ch. 5 - Consider a class that keeps track of the sales of...Ch. 5 - Consider a class MotorBoat that represents...Ch. 5 - Prob. 8ECh. 5 - Prob. 9ECh. 5 - Prob. 10ECh. 5 - Write a program to answer questions like the...Ch. 5 - Define a class called Counter. An object of this...Ch. 5 - Prob. 3PCh. 5 - Define a Trivia class that contains information...Ch. 5 - Define a Beer class that contains the following...Ch. 5 - Write a grading program for an instructor whose...Ch. 5 - Add methods to the Person class from Self-Test...Ch. 5 - Create a class that represents a grade...Ch. 5 - Write a program that uses the Purchase class in...Ch. 5 - Write a program to answer questions like the...Ch. 5 - Consider a class that could be used to play a game...Ch. 5 - Consider a class BasketballGame that represents...Ch. 5 - Consider a class ConcertPromoter that records the...Ch. 5 - Prob. 9PPCh. 5 - Consider a class Movie that contains information...Ch. 5 - Repeat Programming Project 18 from Chapter 4, but...Ch. 5 - Prob. 12PP
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