Simplified Online Shopping System $($Pls solve in JAVA$)$

The system contains:

Person

$-$ Attributes: $$name $,$address $,$email

$-$ Methods: $$getDetails$()$

Customer

$-$ Attributes: $$customerID $,$shoppingCart $($a list of $$ItemToPurchase $$objects$)$

$-$ Methods: $$addToCart$($ItemToPurchase item$),$removeFromCart$($ItemToPurchase item$),$viewCart$()$

Cashier

$-$ Attributes: $$cashierID

$-$ Methods: $$processPayment$($Customer customer$),$generateReceipt$()$

ItemToPurchase

$-$ Attributes: $$itemName $,$quantity $,$price

$-$ Methods: $$getTotalPrice$()$

ShoppingCart

$-$ Attributes: $$cartItems $($a list of $$ItemToPurchase $$objects$),$totalPrice

$-$ Methods: $$addItem$($ItemToPurchase item$),$removeItem$($ItemToPurchase item$),$calculateTotalPrice$()$

OnlineShoppingSystem

$-$ main$()$

Note: You can add more class members $($attributes$,$ methods$)$ if you wish.

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How It Works:

$-$ The program $($main $()$ method$)$ takes user input for both customer and item details.

$-$ It adds items to the customer's shopping cart and calculates the total price.

$-$ It then displays a summary of the purchase, including the total cost.

$-$ The cashier processes the payment and generates a receipt at the end.

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Explanation

Get Customer Details: The program starts by prompting the user to enter the customer's name, address, email, and customer ID$.$ This information is used to create a $`$Customer$`$ object.

Get Cashier Details: Then, the program prompts the user to enter the cashier's ID$.$ A $`$Cashier$`$ object is created with this ID$.$

Item Entry: have two versions $-$

$1.$ Read from keyboard

The program asks how many items the customer wants to purchase.

For each item, the program prompts the user to enter:

$-$ Item Name

$-$ Item Price

$-$ Item Quantity

$2.$ Read the above data from the input file

$$ Each item is then created as an $`$ItemToPurchase$`$ object and added to the customer's shopping cart.

Display Results: After collecting all the item information, the program

$-$ Displays the customer$$s name, cashier's ID$,$ and the list of items purchased.

$-$ Calculates the total cost by summing up the total price of each item in the shopping cart.

$-$ Displays the total cost. $($Sales tax can be considered, but it's optional$)$

Payment Processing: Finally, the virtual cashier processes the payment, and a receipt is generated for printing or emailing. $($just output a message on the console to simulate this step$)$

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Sample Input

Enter customer name: Larry Doe

Enter customer address: $123$ Main St

Enter customer email: larry.doe@example.com

Enter customer ID: C$123($can be hard coded$)$

Enter cashier ID: $001($can be hard coded$)$

Enter number of items to purchase: $2($all item information can also be read from the input file you created$)$

Enter details for item $1$:

Item name: Laptop

Price: $999\mathrm{.}99$

Quantity: $1$

Enter details for item $2$:

Item name: Headphones

Price: $49\mathrm{.}99$

Quantity: $2$

$$

Sample Output

$------$ Order Summary $------$

Customer: Larry Doe

Cashier ID: $001$

Items Purchased:

$1$ x Laptop @ $$999\mathrm{.}99$ each

$2$ x Headphones @ $$49\mathrm{.}99$ each

Total Cost: $$1099\mathrm{.}97$

Processing payment for Larry Doe

Generating receipt...