Write Java Program to simulate online Store System. Any customer enter the store will assign a new shopping cart. The shopping cart is a collection of items that a customer uses to collect (items) things for purchase. A customer can add items to the cart, remove them, empty the cart, view the items in the cart, and end shopping and proceed to checkout.

The program must have a menu showing its services as shown below:

Store System Menu

1. Add a new Item to Store
2. Add a new Customer to Store
3. Add an item to Customer shopping cart
4. Remove an item from Customer shopping cart
5. View the items in Customer shopping cart
6. End shopping and go to checkout
7. Empty Customer shopping cart
8. Exit the program

The above services must do the following actions

1. Add a new Item to Store.

The system prompts to the user for adding a new item data. The item data contains the following items:

• item number: holds an unique number for the item.
• item name: holds the full name of the item.
• item quantity: holds the quantity of the item.
• item price: holds the price of the item.

Enter item number:

Enter item name:

Enter item quantity:

Enter item price:

Enter the type of item (B)Book, (s)shoes, (G)Game ?: B Enter Book title :

Enter book author:

Do you want add another item (y/n)?

2. Add a new Customer.

The system prompts to the system user for adding data for a new customer data. The customer data contains the following items:

• customer No : holds an unique number of a customer.
• customer name: holds a name of the course.
• New Shopping cart will be create and added automatically for the new customer. The shopping cart will be empty.

Enter customer number:

Enter customer name:

New shopping cart add to the customer Do you want add another customer (y/n)?

The System will repeat adding another customer , if the user answer yes for the question " Do you want add another customer (y/n)? ". if the user select no, the system will return to the main menu showing it's services.

3. Add an item to Customer shopping cart

The system asks the user about a wanted customer for adding an item to his shopping cart. The system will allow the user to specify the customer by a customer number. The system will search about the specified customer to show if he/she is exists or not exits. If the customer is exist,

The system will display a form displaying all items in the store, Then the system will ask the user to enter the items number and the required item quantity that the customer wants to add to his shopping cart. For each input the system will check the required item quantity with the item quantity in the store to validate that the required quantity is available in the store for that item , if not that the system will alert the user and will not allow the user to add the item to shopping cart.

Sample input for this case:

Enter customer number: 212

The customer is not exits, Do you want try again(y/n)?

Enter customer number: 215

The customer no :215 ,The customer name : Rami Attaallah. Items in the store

1. 1401	Java Book.	[3]
2. 1311	logo Game.	[5]
3. 1444	Nike sport shoes	[1]

0. Return to a main menu

Enter your item choice :3

The item is [1444 Nike sport shoes [1] ]

Enter the required quantity: 2

Sorry the required quantity is not available, the available quantity is [1],try again!

Do you want add another item to shopping cart (y/n)? y

Enter your item choice :3

The item is [1444 Nike sport shoes [1] ] Enter the required quantity: 1

The item is [1444 Nike sport shoes [1] ] adding to shopping cart is success

Do you want add another item to shopping cart (y/n)? y

Enter your item choice :1

The item is [1401 Java Book. [3] ]

Enter the required quantity: 1

The item is [1401 Java Book. [1] ] adding to shopping cart is success

Do you want add another item to shopping cart (y/n)? n

4. Remove an item from Customer shopping cart

When the user select this option, the System will prompts the user to enter a customer number(id) and then the system will search about the customer. If the customer is exists ,The system will show the customer information including items of his shopping cart and will prompt the user to enter the item choice to remove from the shopping cart.

Enter customer number: 215

The customer no :215,The customer name : Rami Attaallah. The current items in the shopping cart.

1. [1444 Nike sport shoes [1] ]

2. [1401 Java Book. [1] ]

What you want to modify ?

R. Remove item form the shopping cart.

M. Return to the main menu.

Enter your choice [R Remove, M main menu]:R Enter Your item option number:1

The item [1444 Nike sport shoes [1] ] is removed from shopping cart.

What you want to modify ?

R. Remove item form the shopping cart.

M. Return to the main menu.

Enter your choice [R Remove, M main menu]:M

5. View the items in Customer shopping cart

The System should display the items in shopping cart for a given customer.

Enter customer number: 215

Item no	Item name	Quantity	Unit price	Total price	Total price
1401	Java Book	1	20	20	20

Press (m/M) key to return to the main menu

6. End shopping and go to checkout

The System should display the items in shopping cart for a given customer and remove the customer from the store.

7. Empty Customer shopping cart

The System should remove all items in shopping cart for a given customer or assign new shopping cart for the customer.

Instruction:

-Your solution must contain multiple class for example Customer class, Store class, ShoppingCart class and so on.