Starting Out with Java: Early Objects (6th Edition)
6th Edition
ISBN: 9780134457963
Author: GADDIS
Publisher: PEARSON
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Chapter 3, Problem 5PC
Retail Item Class
Write a class named RetailItem that holds data about an item in a retail store. The class should have the following fields:
- description. The description field references a String object that holds a brief description of the item.
- unitsOnHand. The unitsOnHand field is an int variable that holds the number of units currently in inventory.
- price. The price field is a double that holds the item’s retail price.
Write a constructor that accepts arguments for each field, appropriate mutator methods that store values in these fields, and accessor methods that return the values in these fields. Once you have written the class, write a separate
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(Invoice Class) Create a class called Invoice that a hardware store might use to representan invoice for an item sold at the store. An Invoice should include four data members—a part number (type string), a part description (type string), a quantity of the item being purchased (typeint) and a price per item (type int). Your class should have a constructor that initializes the fourdata members. A constructor that receives multiple arguments is defined with the form:ClassName( TypeName1 parameterName1, TypeName2 parameterName2, ... )Provide a set and a get function for each data member. In addition, provide a member functionnamed getInvoiceAmount that calculates the invoice amount (i.e., multiplies the quantity by theprice per item), then returns the amount as an int value. If the quantity is not positive, it should beset to 0. If the price per item is not positive, it should be set to 0. Write a test program that demonstrates class Invoice’s capabilities
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Employee and ProductionWorker Classes
Create an Employee class that has properties for the following data:
Employee name
Employee number
Next, create a class named ProductionWorker that is derived from the Employee class. The ProductionWorker class should have properties to hold the following data:
Shift number (an integer, such as 1, 2, or 3)
Hourly pay rate
The workday is divided into two shifts: day and night. The Shift property will hold an integer value representing the shift that the employee works. The day shift is shift 1 and the night shift is shift 2.
Create an application that creates an object of the ProductionWorker class and lets the user enter data for each of the object’s properties. Retrieve the object’s properties and display their values.
Chapter 3 Solutions
Starting Out with Java: Early Objects (6th Edition)
Ch. 3.1 - In this chapter, we use the metaphor of a...Ch. 3.1 - Prob. 3.2CPCh. 3.1 - When a variable is said to reference an object,...Ch. 3.1 - A string literal, such as Joe, causes what type of...Ch. 3.1 - Prob. 3.5CPCh. 3.1 - Prob. 3.6CPCh. 3.1 - Prob. 3.7CPCh. 3.1 - Prob. 3.8CPCh. 3.1 - Prob. 3.9CPCh. 3.1 - What is a stale data item?
Ch. 3.3 - Assume that r1 and r2 are variables that reference...Ch. 3.4 - How is a constructor named?Ch. 3.4 - What is a constructors return type?Ch. 3.4 - Prob. 3.14CPCh. 3.8 - Prob. 3.15CPCh. 3.8 - When designing an object-oriented application, who...Ch. 3.8 - How do you identify the potential classes in a...Ch. 3.8 - What are a classs responsibilities?Ch. 3.8 - What two questions should you ask to determine a...Ch. 3.8 - Will all of a classs actions always be directly...Ch. 3 - This is a collection of programming statements...Ch. 3 - A class is analogous to a(n) _______. a. house b....Ch. 3 - An object is a(n) _____. a. blueprint b. attribute...Ch. 3 - This is a class member that holds data. a. method...Ch. 3 - This key word causes an object to be created in...Ch. 3 - This key word causes a value to be sent back from...Ch. 3 - This is a method that gets a value from a classs...Ch. 3 - This is a method that stores a value in a field or...Ch. 3 - When the value of an item is dependent on other...Ch. 3 - This is a method that is automatically called when...Ch. 3 - When a local variable has the same name as a...Ch. 3 - If you do not write a constructor for a class,...Ch. 3 - A classs responsibilities are __________. a. the...Ch. 3 - Prob. 14TFCh. 3 - True or False: When passing an argument to a...Ch. 3 - Prob. 16TFCh. 3 - True or False: Each instance of a class has its...Ch. 3 - True or False: When you write a constructor for a...Ch. 3 - True or False: To find the classes needed for an...Ch. 3 - Find the error in the following class: public...Ch. 3 - Prob. 2FTECh. 3 - The following statement attempts to create a...Ch. 3 - Design a class named Pet, which should have the...Ch. 3 - Look at the following partial class definition,...Ch. 3 - Look at the following description of a problem...Ch. 3 - What is the difference between a class and an...Ch. 3 - A contractor uses a blueprint to build a set of...Ch. 3 - What is an accessor method? What is a mutator...Ch. 3 - is it a good idea to make fields private? Why or...Ch. 3 - If a class has a private field, what has access to...Ch. 3 - Prob. 6SACh. 3 - Assume a program named MailList.java is stored in...Ch. 3 - Prob. 8SACh. 3 - Why are constructors useful for performing...Ch. 3 - Prob. 10SACh. 3 - What is the difference between an argument and a...Ch. 3 - Under what circumstances does Java automatically...Ch. 3 - What do you call a constructor that accepts no...Ch. 3 - Employee Class Write a class named Employee that...Ch. 3 - Car Class Write a class named Car that has the...Ch. 3 - Personal Information Class Design a class that...Ch. 3 - Temperature Class Write a Temperature class that...Ch. 3 - Retail Item Class Write a class named RetailItem...Ch. 3 - Payroll Class Design a Payroll class that has...Ch. 3 - TestScores Class Design a TestScores class that...Ch. 3 - Circle Class Write a Circle class that has the...Ch. 3 - Pet Class Design a class named Pet, which should...Ch. 3 - Patient Charges Write a class named Patient that...
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