Chapter 8, Problem 10PP

Program Plan Intro

Program plan:

CashRegisterModified.java:

• Define a class named “CashRegisterModified” to track the item count and the total amount due.
  • Declare an arraylist variable named “itemPrices”
  • Create a constructor named “CashRegisterModified” and initialize the arraylist.
  • Define a function named “addItem” and add the price of the item using the “add()” method.
  • Define a function named “getTotal”.
    • Using enhanced “for” loop, calculate the price of all items and store into the variable named “total”.
    • Return the “Total” price.
  • Define a function named “getCount” and retrieve the number of item prices using “getCount” method.
    • Return “itemPrice” count in the current sale.
  • Define a function named “clear”.
    • Using the “clear()” method clears the item prices.
  • Define a function named “displayAll”.
    • Using “for” loop print and display the prices of all items in the current sale.

CashRegister.java:

• Define another class named “CashRegister” and the keyword “extends” indicates that a class is inherited from another class named “CashRegisterModified”.
  • Define a main function.
    • Create an object named “register1” of another class “CashRegisterModified”.
    • Call the function “clear()”and remove all the garbage values from the “register1” object.
    • Call the function “addItem()”and add the values to the object “register1”.
      • Call the function “displayAll” and display the prices of all items in the current sale.
    • Call the function “getCount()” and print the number of items in the current sale.
    • Call the function “getTotal()” and display the total of all items.