Reference no: EM132223726

Assignment: GUI Design, data validation, exception handling and Text I/O

Description: Develop a GUI application to manage product file.

For each product following information is kept:
- Product id (integer and unique)
- Product name
- Product price (double and positive)
- Quantity on hand (integer)
User should be able to perform the following operations:
- Add new product, only if all the valid information is provided
- Modify existing product using product id
Grading: The application will be evaluated based upon the following criteria:
- GUI Design
o Designed using suitable GUI controls i.e. labels, text boxes and buttons
o Menu/Menu options are provided for most operations
o Access keys are implemented for most of the GUI controls
- Text File I/O
o Adding new product
o Modify existing product using product id
- Data validation
o Provided the needed data validation and proper feedback to the user

Hint: For the best implementation create and use the following classes:
- Design the GUI as it was done in class activity
- Product Class
o Add all the attributes
o Add all the set/get methods with the data validation
o Provide default as well as parametrized constructors
o Override toString method to return the string representation of the product class
o Override equals method to compare the two products are equal if id is same
- ProductDB Class
o Attribute for the file name and arraylist
o Add all the set/get methods
o Implement Singleton design pattern (optional)
o Provide method to add a product passed to it to the arraylist (call this method with the Add product button)
o Provide method to find a product from the arraylist using product id (call this method with the find product button)
o Save method to save the arraylist to the file (call this method with the Save menu option)
o Load method to load the data from the file to arraylist (call this method with the Load menu option)