Use Case Diagram:
Following are the list of Actors and Responsibilities identified based on main requirements in our project and which are within the scope current project

Use Case Description:

Activity Diagram:

Sequence Diagram:

1. Display(): Display Products to Users 2. getPrice(): Get Price of Products to Users 3. addProduct(): Add Products to User Coffee Cart 4. check(): User Checkout with Coffee Product 5. RecieveOrder(): Store Manager Receive Order Placed by User 6. CheckPayment(): Store Manager Checks Payment done by user. 7. Notify(): Store Manager Notifies it to Store Coffee Maker 8. UpdateOrderStatus(): Order Status is updated wit 9. GetOrderStatus(): User can check status of ordered product 10. PrintInvoice(): Print Invoice of product and give it to User 11. DeliverOrder(): Product is delivered to User.

Class Diagram:

State Machine Diagram:

Update Delivery Address And Time Update nearby Coffee Day Place Order
Select Coffee Item
Select Coffee Item
Select Coffee Day Location
Select Coffee Day Location
Order Placed
Order Placed
Address and Time Specified
Address and Time Specified

Order Reject
Order Reject
Order Accept
Order Accept Update Order
Drink Received
Drink Received
Paid
Paid
Order Updated
Order Updated
Drink
Pick Up Paid

Design Class Diagram:

1. User Class indicates a person who logged on to website or mobile application and browsing through coffee products. 2. Customer Class indicates a User who turned into customer by ordering some product online. 3. Coffee Cart Class indicates all the coffee products add by customer to his cart 4. Payment Class indicates payment made for the products he/she ordered. 5. Order Class indicates the details of all products ordered by a particular Customer 6.