Modify your implemented classes to include the overridden method, computeSales(), that computes the current sales in each of the following categories:

• Supplies = office supplies sold dollar amount + books sold dollar amount + apparel sold dollar amount
• Services = number of hours * rate per hour
• Paper = number of pounds * price per pound
• Modify your pseudocode from the Phase 2 Discussion Board to include any improvements that were suggested through the discussion. Update your design document with these improvements. Implement your sales tracker application.
• Implement your sales tracker application according to your pseudocode.
• Test your application, and provide screenshots demonstrating that your application runs.

Intermediate-level Java programming should be demonstrated in your application:

• There should be implemented constructors for each class.
• The toString() method should be overridden to provide readable string representation of each object.
• Getters and setters need to be implemented to enforce data hiding.
• Code should be fully commented.
• Program flow should be logical.
• Behavior should be encapsulated into methods avoiding all encompassing large main() methods.
• Projects should be developed in NetBeans and zipped prior to submission.
• Code should compile and run free of exceptions, indicating that debugging tools were used to eliminate any run time errors