Cash registers can handle both bills and coins Program plan: Filename: “MonetaryUnit.java” Define the “MonetaryUnit” class Define the private class members. Define a constructor “MonetaryUnit ()”. Initialize the value of “value” and “name”. Define a method “getValue ()”. Return the variable “value”. Define a method “getName ()”. Return the variable “name”. Filename: “CashRegister.java” Define the “CashRegister” class Declare the private variables. Define the “CashRegister ()” method Set the value of “purchase” as 0. Set the value of “payment” as 0. Define the “recordPurchase()” method Calculate the “newTotal”. Set the value of “purchase” as “newTotal”. Define the “enterPayment()” method Calculate the value of “payment”. Define the “giveChange()” method Calculate the value of “change”. Set the value of “purchase” equal to 0. Set the value of “payment” equal to 0. Return the value of “change”. Filename: “CashRegisterTester.java” Define the “CashRegisterTester” class Define the main method. Declare the required variables. Create an object for “CashRegister” class. Call the method “recordPurchase()”. Call the method “enterPayment()”. Call the method “giveChange()”. Print the value of “myChange”. Print the expected value.

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Chapter 8, Problem 3PE

Program Plan Intro

Cash registers can handle both bills and coins

Program plan:

Filename: “MonetaryUnit.java”

Define the “MonetaryUnit” class

Define the private class members.

Define a constructor “MonetaryUnit ()”.

Initialize the value of “value” and “name”.

Define a method “getValue ()”.

Return the variable “value”.

Define a method “getName ()”.

Return the variable “name”.

Filename: “CashRegister.java”

Define the “CashRegister” class

Declare the private variables.

Define the “CashRegister ()” method

Set the value of “purchase” as 0.

Set the value of “payment” as 0.

Define the “recordPurchase()” method

Calculate the “newTotal”.

Set the value of “purchase” as “newTotal”.

Define the “enterPayment()” method

Calculate the value of “payment”.

Define the “giveChange()” method

Calculate the value of “change”.

Set the value of “purchase” equal to 0.

Set the value of “payment” equal to 0.

Return the value of “change”.

Filename: “CashRegisterTester.java”

Define the “CashRegisterTester” class

Define the main method.

Declare the required variables.

Create an object for “CashRegister” class.

Call the method “recordPurchase()”.

Call the method “enterPayment()”.

Call the method “giveChange()”.

Print the value of “myChange”.

Print the expected value.

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