Invoice printing Program plan: Filename: “AbstractItem.java” This program file is used to define an abstract class “AbstractItem”. In the code, Define a class “AbstractItem”. Declare the abstract methods “getTotalPrice()” and “getDescription()”. Define a method “format()”. Define an integer variable “COLUMN_WIDTH”. Call the methods “getTotalPrice()” and “getDescription()” and return the value. Filename: “FixedPriceItem.java” This program file is used to define a class “FixedPriceItem” as it extends from “AbstractItem”. In the code, Define a class “FixedPriceItem”. Declare the class members “description” and “charge”. Define a constructor “FixedPriceItem()”. Set the values of class members “description” and “charge”. Define a method “getTotalPrice()”. Return the value of “charge”. Define a method “getDescription()”. Call the method “format()” and return the result. Filename: “FixedPriceTester.java” This program file is used to define a class “FixedPriceTester”. In the code, Define a class “FixedPriceTester”. Define a method “main()”. Create the object “item” of class “AbstractItem”. Call the method “getTotalPrice()” and print the value. Print the expected result. Call the method “format()” and print the value. Print the expected result.

Question

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Answer 1

Question

Chapter 12, Problem 1PE

Program Plan Intro

Invoice printing

Program plan:

Filename: “AbstractItem.java”

This program file is used to define an abstract class “AbstractItem”. In the code,

Define a class “AbstractItem”.

Declare the abstract methods “getTotalPrice()” and “getDescription()”.

Define a method “format()”.

Define an integer variable “COLUMN_WIDTH”.

Call the methods “getTotalPrice()” and “getDescription()” and return the value.

Filename: “FixedPriceItem.java”

This program file is used to define a class “FixedPriceItem” as it extends from “AbstractItem”. In the code,

Define a class “FixedPriceItem”.

Declare the class members “description” and “charge”.

Define a constructor “FixedPriceItem()”.

Set the values of class members “description” and “charge”.

Define a method “getTotalPrice()”.

Return the value of “charge”.

Define a method “getDescription()”.

Call the method “format()” and return the result.

Filename: “FixedPriceTester.java”

This program file is used to define a class “FixedPriceTester”. In the code,

Define a class “FixedPriceTester”.

Define a method “main()”.

Create the object “item” of class “AbstractItem”.

Call the method “getTotalPrice()” and print the value.

Print the expected result.

Call the method “format()” and print the value.

Print the expected result.

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Answer 2

Question

Chapter 12, Problem 1PE

Program Plan Intro

Invoice printing

Program plan:

Filename: “AbstractItem.java”

This program file is used to define an abstract class “AbstractItem”. In the code,

Define a class “AbstractItem”.

Declare the abstract methods “getTotalPrice()” and “getDescription()”.

Define a method “format()”.

Define an integer variable “COLUMN_WIDTH”.

Call the methods “getTotalPrice()” and “getDescription()” and return the value.

Filename: “FixedPriceItem.java”

This program file is used to define a class “FixedPriceItem” as it extends from “AbstractItem”. In the code,

Define a class “FixedPriceItem”.

Declare the class members “description” and “charge”.

Define a constructor “FixedPriceItem()”.

Set the values of class members “description” and “charge”.

Define a method “getTotalPrice()”.

Return the value of “charge”.

Define a method “getDescription()”.

Call the method “format()” and return the result.

Filename: “FixedPriceTester.java”

This program file is used to define a class “FixedPriceTester”. In the code,

Define a class “FixedPriceTester”.

Define a method “main()”.

Create the object “item” of class “AbstractItem”.

Call the method “getTotalPrice()” and print the value.

Print the expected result.

Call the method “format()” and print the value.

Print the expected result.

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Answer 3

Question

Chapter 12, Problem 1PE

Program Plan Intro

Invoice printing

Program plan:

Filename: “AbstractItem.java”

This program file is used to define an abstract class “AbstractItem”. In the code,

Define a class “AbstractItem”.

Declare the abstract methods “getTotalPrice()” and “getDescription()”.

Define a method “format()”.

Define an integer variable “COLUMN_WIDTH”.

Call the methods “getTotalPrice()” and “getDescription()” and return the value.

Filename: “FixedPriceItem.java”

This program file is used to define a class “FixedPriceItem” as it extends from “AbstractItem”. In the code,

Define a class “FixedPriceItem”.

Declare the class members “description” and “charge”.

Define a constructor “FixedPriceItem()”.

Set the values of class members “description” and “charge”.

Define a method “getTotalPrice()”.

Return the value of “charge”.

Define a method “getDescription()”.

Call the method “format()” and return the result.

Filename: “FixedPriceTester.java”

This program file is used to define a class “FixedPriceTester”. In the code,

Define a class “FixedPriceTester”.

Define a method “main()”.

Create the object “item” of class “AbstractItem”.

Call the method “getTotalPrice()” and print the value.

Print the expected result.

Call the method “format()” and print the value.

Print the expected result.

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Answer 4

Question

Chapter 12, Problem 1PE

Program Plan Intro

Invoice printing

Program plan:

Filename: “AbstractItem.java”

This program file is used to define an abstract class “AbstractItem”. In the code,

Define a class “AbstractItem”.

Declare the abstract methods “getTotalPrice()” and “getDescription()”.

Define a method “format()”.

Define an integer variable “COLUMN_WIDTH”.

Call the methods “getTotalPrice()” and “getDescription()” and return the value.

Filename: “FixedPriceItem.java”

This program file is used to define a class “FixedPriceItem” as it extends from “AbstractItem”. In the code,

Define a class “FixedPriceItem”.

Declare the class members “description” and “charge”.

Define a constructor “FixedPriceItem()”.

Set the values of class members “description” and “charge”.

Define a method “getTotalPrice()”.

Return the value of “charge”.

Define a method “getDescription()”.

Call the method “format()” and return the result.

Filename: “FixedPriceTester.java”

This program file is used to define a class “FixedPriceTester”. In the code,

Define a class “FixedPriceTester”.

Define a method “main()”.

Create the object “item” of class “AbstractItem”.

Call the method “getTotalPrice()” and print the value.

Print the expected result.

Call the method “format()” and print the value.

Print the expected result.

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See solution

Answer 5

Chapter 12, Problem 1PE

Program Plan Intro

Invoice printing

Program plan:

Filename: “AbstractItem.java”

This program file is used to define an abstract class “AbstractItem”. In the code,

Define a class “AbstractItem”.

Declare the abstract methods “getTotalPrice()” and “getDescription()”.

Define a method “format()”.

Define an integer variable “COLUMN_WIDTH”.

Call the methods “getTotalPrice()” and “getDescription()” and return the value.

Filename: “FixedPriceItem.java”

This program file is used to define a class “FixedPriceItem” as it extends from “AbstractItem”. In the code,

Define a class “FixedPriceItem”.

Declare the class members “description” and “charge”.

Define a constructor “FixedPriceItem()”.

Set the values of class members “description” and “charge”.

Define a method “getTotalPrice()”.

Return the value of “charge”.

Define a method “getDescription()”.

Call the method “format()” and return the result.

Filename: “FixedPriceTester.java”

This program file is used to define a class “FixedPriceTester”. In the code,

Define a class “FixedPriceTester”.

Define a method “main()”.

Create the object “item” of class “AbstractItem”.

Call the method “getTotalPrice()” and print the value.

Print the expected result.

Call the method “format()” and print the value.

Print the expected result.

Answer 6

Chapter 12, Problem 1PE

Program Plan Intro

Invoice printing

Program plan:

Filename: “AbstractItem.java”

This program file is used to define an abstract class “AbstractItem”. In the code,

Define a class “AbstractItem”.

Declare the abstract methods “getTotalPrice()” and “getDescription()”.

Define a method “format()”.

Define an integer variable “COLUMN_WIDTH”.

Call the methods “getTotalPrice()” and “getDescription()” and return the value.

Filename: “FixedPriceItem.java”

This program file is used to define a class “FixedPriceItem” as it extends from “AbstractItem”. In the code,

Define a class “FixedPriceItem”.

Declare the class members “description” and “charge”.

Define a constructor “FixedPriceItem()”.

Set the values of class members “description” and “charge”.

Define a method “getTotalPrice()”.

Return the value of “charge”.

Define a method “getDescription()”.

Call the method “format()” and return the result.

Filename: “FixedPriceTester.java”

This program file is used to define a class “FixedPriceTester”. In the code,

Define a class “FixedPriceTester”.

Define a method “main()”.

Create the object “item” of class “AbstractItem”.

Call the method “getTotalPrice()” and print the value.

Print the expected result.

Call the method “format()” and print the value.

Print the expected result.

Answer 7

Chapter 12, Problem 1PE

Program Plan Intro

Invoice printing

Program plan:

Filename: “AbstractItem.java”

This program file is used to define an abstract class “AbstractItem”. In the code,

Define a class “AbstractItem”.

Declare the abstract methods “getTotalPrice()” and “getDescription()”.

Define a method “format()”.

Define an integer variable “COLUMN_WIDTH”.

Call the methods “getTotalPrice()” and “getDescription()” and return the value.

Filename: “FixedPriceItem.java”

This program file is used to define a class “FixedPriceItem” as it extends from “AbstractItem”. In the code,

Define a class “FixedPriceItem”.

Declare the class members “description” and “charge”.

Define a constructor “FixedPriceItem()”.

Set the values of class members “description” and “charge”.

Define a method “getTotalPrice()”.

Return the value of “charge”.

Define a method “getDescription()”.

Call the method “format()” and return the result.

Filename: “FixedPriceTester.java”

This program file is used to define a class “FixedPriceTester”. In the code,

Define a class “FixedPriceTester”.

Define a method “main()”.

Create the object “item” of class “AbstractItem”.

Call the method “getTotalPrice()” and print the value.

Print the expected result.

Call the method “format()” and print the value.

Print the expected result.

Answer 8

Expert Solution & Answer

Answer 9

Expert Solution & Answer

Answer 10

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Answer 11

Ch. 12.1 - What is the rule of thumb for finding classes? Ch. 12.1 - Your job is to write a program that plays chess....Ch. 12.1 - Suppose the invoice is to be saved to a file. Name...Ch. 12.1 - Looking at the invoice in Figure 1, what is a...Ch. 12.1 - Prob. 5SC Ch. 12.2 - Consider the CashRegisterTester class of Section...Ch. 12.2 - Prob. 7SC Ch. 12.2 - Consider the Quiz class described in Section...Ch. 12.2 - Why should coupling be minimized between...Ch. 12.2 - Prob. 10SC

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Chapter 12 Solutions