This application is a simple Bookstore which allows the user to buy books.
It has a login frame, where the user logs into their account. If the logged-in user is Admin, the admin frame gets opened, where the admin can see the availability of products and the processed orders.
The admin also has a button to go to the Homepage. If a logged-in user is a Customer, the Homepage frame gets opened, where the customer can choose multiple books to add to cart. User can open their cart, where they can also choose the quantity of each book. Afterward, by clicking the Buy button, the Payment window opens up where the user finishes with their payment.
In the user frame, each logged-in user can see their orders.