مساعدة في الخطوات والله ماني عارف من وين ابداء

Question:

design and code a Java application to manage Stock.

The application should have a proper Graphical User Interface,

should store information about the stock in a file or a database,

and should provide the following functionalities:

- The information that should be stored about each product is:

product code, product name, product price, and product quantity.

- The application should allow adding a new product to the stock.

Duplication is not permitted, i.e. if the to-be-added product exist already,

a message should be displayed accordingly.

- The application should allow updating the details of a product by

changing its price and / or quantity. Updating a product's code

or name is NOT permitted.

- The application should allow deleting a product from the stock.

The to-be-deleted product should have a ZERO quantity;

otherwise a message should be displayed accordingly.

- The application should allow searching for a product based on its code or name.

- The application should allow displaying the details of the all products with critical quantity

(i.e. quantity below 5).