Invoice Builder Program plan: Filename: “LineItem.java” This program file is used to define a class “LineItem”. In the code, Define a class “LineItem”. Declare the class members “quantity” and “theProduct”. Define the constructor “LineItem()”. Initialize “quantity”. Initialize “theProduct”. Define a method “getTotalPrice()”, Return the price. Define a method “format()”, Return the value in string format Define a method “getQuantity()”, Return the value of “quantity”. Define a method “getProduct()”, Return the value of “theProduct”. Filename: “Product.java” This program file is used to define a class “Product”. In the code, Define a class “Product”. Declare the class members “description” and “price”. Define the constructor “Product()”. Initialize “description”. Initialize “price”. Define a method “getDescription()”, Return the “description”. Define a method “getPrice()”, Return the “price”. Filename: “Address.java” This program file is used to define a class “Address”. In the code, Define a class “Address”. Declare the class members “name”, “street”, “city”, “state” and “zip”. Define the constructor “Address()”. Initialize “name”. Initialize “street”. Initialize “city”. Initialize “state”. Initialize “zip”. Define a method “format()”, Return the value in string format Define a method “getName()”, Return the value of “name”. Define a method “getStreet()”, Return the value of “street”. Define a method “getCity()”, Return the value of “city”. Define a method “getState()”, Return the value of “state”. Define a method “getZip()”, Return the value of “zip”. Filename: “Invoice.java” This program file is used to define a class “Invoice”. In the code, Define a class “Invoice”. Declare the class members “billingAddress”, “shippingAddress” and “items”. Define the constructor “Invoice()”. Set “items”. Initialize “billingAddress”. Initialize “shippingAddress”. Define a method “add()”, Define the object of “LineItem” called “anItem”. Add item using “add()” method. Define a method “getBillingAddress()”, Return the value of “billingAddress”. Define a method “getShippingAddress()”, Return the value of “shippingAddress”. Define a method “getItems()”, Return the value of “items”. Define a method “format()”, Declare a string variable “r” and set its value. Iterate a “for” loop, set the value of “r”. Set the value of “r” to a string format. Return the value of “r”. Define a method “getAmountDue()”, Declare a variable “amountDue”. Iterate a “for” loop, Set the value of “amountDue”. Return the value of “amountDue”. Filename: “InvoiceBuilder.java” This program file is used to define a class “InvoiceBuilder”. In the code, Define a class “InvoiceBuilder”. Declare the class members “builder” and “doc”. Define the constructor “InvoiceBuilder()”. Create an object “factory” of class “DocumentBuilderFactory”. Set “builder”. Initialize “items”. Define a method “build()”, Set “doc”. Create an object “root” of “Element”. Add “root” to “doc”. Return the “doc”. Define a method “createInvoice()”, Create an element “invoiceElement” for invoice. Create an element “sAddressElement”. Create an element “bAddressElement”. Create an element “itemsElement”. Append “sAddressElement” to “invoiceElement”. Append “bAddressElement” to “invoiceElement”. Append “itemsElement” to “invoiceElement”. Define a method “createInvoice()”, Create an element “addressElement” for address. Create a text node “nameText”. Create an element “nameElement” for name. Append “nameText” to “nameElement”. Create a text node “streetText”. Create an element “streetElement” for street. Append “streetText” to “streetElement”. Create a text node “cityText”. Create an element “cityElement” for city. Append “cityText” to “cityElement”. Create a text node “stateText”. Create an element “stateElement” for state. Append “stateText” to “stateElement”. Create a text node “zipText”. Create an element “zipElement” for zip. Append “zipText” to “zipElement”. Append “nameElement” to “addressElement”. Append “streetElement” to “addressElement”. Append “cityElement” to “addressElement”. Append “stateElement” to “addressElement”. Append “zipElement” to “addressElement”. Return the value of “addressElement”. Define a method “createItemList()”, Create an element “itemsElement” for items. Iterate a “for” loop, Create an object “itemElement”. Append “itemElement” to “itemsElement”. Return the value of “itemsElement”. Define a method “createItem()”, Create an element “itemElement” for item. Create an element “productElement”. Create a text node “quantityText”. Create an element “quantityElement”. Append “quantityElement” to “quantityText”. Append “itemElement” to “productElement”. Append “itemElement” to “quantityElement”. Define a method “createProduct()”, Create a text node “descriptionText”. Create a text node “priceText”. Create an element “descriptionElement” for description. Create an element “priceElement” for price. Append “descriptionText” to “descriptionElement”. Append “priceText” to “priceElement”. Create an element “productElement” for product. Append “descriptionElement” to “productElement”. Append “priceElement” to “productElement”. Return “productElement”. Filename: “InvoiceBuilderDemo.java” This program file is used to define a class “InvoiceBuilderDemo”. In the code, Import the required packages. Define a class “InvoiceBuilderDemo”. Define the method “main()”. Define the object “samsShipToAddress” of class “Address”. Define the object “samsBillToAddress” of class “Address”. Define the object “samsInvoice” of class “Invoice”. Add the products using “add()” method. Define the object “builder” of class “InvoiceBuilder”. Define the DOM elements. Define a variable “out”. Print the variable “out”.

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Chapter 25, Problem 5PP

Program Plan Intro

Invoice Builder

Program plan:

Filename: “LineItem.java”

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

Define a class “LineItem”.

Declare the class members “quantity” and “theProduct”.

Define the constructor “LineItem()”.

Initialize “quantity”.

Initialize “theProduct”.

Define a method “getTotalPrice()”,

Return the price.

Define a method “format()”,

Return the value in string format

Define a method “getQuantity()”,

Return the value of “quantity”.

Define a method “getProduct()”,

Return the value of “theProduct”.

Filename: “Product.java”

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

Define a class “Product”.

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

Define the constructor “Product()”.

Initialize “description”.

Initialize “price”.

Define a method “getDescription()”,

Return the “description”.

Define a method “getPrice()”,

Return the “price”.

Filename: “Address.java”

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

Define a class “Address”.

Declare the class members “name”, “street”, “city”, “state” and “zip”.

Define the constructor “Address()”.

Initialize “name”.

Initialize “street”.

Initialize “city”.

Initialize “state”.

Initialize “zip”.

Define a method “format()”,

Return the value in string format

Define a method “getName()”,

Return the value of “name”.

Define a method “getStreet()”,

Return the value of “street”.

Define a method “getCity()”,

Return the value of “city”.

Define a method “getState()”,

Return the value of “state”.

Define a method “getZip()”,

Return the value of “zip”.

Filename: “Invoice.java”

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

Define a class “Invoice”.

Declare the class members “billingAddress”, “shippingAddress” and “items”.

Define the constructor “Invoice()”.

Set “items”.

Initialize “billingAddress”.

Initialize “shippingAddress”.

Define a method “add()”,

Define the object of “LineItem” called “anItem”.

Add item using “add()” method.

Define a method “getBillingAddress()”,

Return the value of “billingAddress”.

Define a method “getShippingAddress()”,

Return the value of “shippingAddress”.

Define a method “getItems()”,

Return the value of “items”.

Define a method “format()”,

Declare a string variable “r” and set its value.

Iterate a “for” loop,

set the value of “r”.

Set the value of “r” to a string format.

Return the value of “r”.

Define a method “getAmountDue()”,

Declare a variable “amountDue”.

Iterate a “for” loop,

Set the value of “amountDue”.

Return the value of “amountDue”.

Filename: “InvoiceBuilder.java”

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

Define a class “InvoiceBuilder”.

Declare the class members “builder” and “doc”.

Define the constructor “InvoiceBuilder()”.

Create an object “factory” of class “DocumentBuilderFactory”.

Set “builder”.

Initialize “items”.

Define a method “build()”,

Set “doc”.

Create an object “root” of “Element”.

Add “root” to “doc”.

Return the “doc”.

Define a method “createInvoice()”,

Create an element “invoiceElement” for invoice.

Create an element “sAddressElement”.

Create an element “bAddressElement”.

Create an element “itemsElement”.

Append “sAddressElement” to “invoiceElement”.

Append “bAddressElement” to “invoiceElement”.

Append “itemsElement” to “invoiceElement”.

Define a method “createInvoice()”,

Create an element “addressElement” for address.

Create a text node “nameText”.

Create an element “nameElement” for name.

Append “nameText” to “nameElement”.

Create a text node “streetText”.

Create an element “streetElement” for street.

Append “streetText” to “streetElement”.

Create a text node “cityText”.

Create an element “cityElement” for city.

Append “cityText” to “cityElement”.

Create a text node “stateText”.

Create an element “stateElement” for state.

Append “stateText” to “stateElement”.

Create a text node “zipText”.

Create an element “zipElement” for zip.

Append “zipText” to “zipElement”.

Append “nameElement” to “addressElement”.

Append “streetElement” to “addressElement”.

Append “cityElement” to “addressElement”.

Append “stateElement” to “addressElement”.

Append “zipElement” to “addressElement”.

Return the value of “addressElement”.

Define a method “createItemList()”,

Create an element “itemsElement” for items.

Iterate a “for” loop,

Create an object “itemElement”.

Append “itemElement” to “itemsElement”.

Return the value of “itemsElement”.

Define a method “createItem()”,

Create an element “itemElement” for item.

Create an element “productElement”.

Create a text node “quantityText”.

Create an element “quantityElement”.

Append “quantityElement” to “quantityText”.

Append “itemElement” to “productElement”.

Append “itemElement” to “quantityElement”.

Define a method “createProduct()”,

Create a text node “descriptionText”.

Create a text node “priceText”.

Create an element “descriptionElement” for description.

Create an element “priceElement” for price.

Append “descriptionText” to “descriptionElement”.

Append “priceText” to “priceElement”.

Create an element “productElement” for product.

Append “descriptionElement” to “productElement”.

Append “priceElement” to “productElement”.

Return “productElement”.

Filename: “InvoiceBuilderDemo.java”

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

Import the required packages.

Define a class “InvoiceBuilderDemo”.

Define the method “main()”.

Define the object “samsShipToAddress” of class “Address”.

Define the object “samsBillToAddress” of class “Address”.

Define the object “samsInvoice” of class “Invoice”.

Add the products using “add()” method.

Define the object “builder” of class “InvoiceBuilder”.

Define the DOM elements.

Define a variable “out”.

Print the variable “out”.

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