You are to write a set of supporting classes for a simple shopping program. We are providing GUI code (Graphical User Interface) that will provide...

I seen a similar exercise that you helped with. I was hoping you could help me out with this one.

• Attachment 1
• Attachment 2
• Attachment 3

import java.text.DecimalFormat;import java.text.NumberFormat;public class Item {privateprivateprivateprivate String name;double price;int bulkQuantity;double bulkPrice; /***** @param...