Project 1

Add some dummy products data in your code with categories for each product added. Add subcategories to relevant categories. Now, Ask the customer to view products based on categories and display those products based on categories in the ecommerce store to the Customer if yes.
The seller should be able to add products to different categories as well.
Divide your project in different packages.
Add relevant exception handling to different methods. On checkout by the Customer, create an order and write all the order details to a file with the filename same as the customer id.