Please write code for Discount Bill. MAKE SURE TO INCLUDE COMMENTS PLEASE

For this Assignment, you need to meet ALL specifications for Chapter 9, Exercise \#10, and pass all the tests used on the Practice-IT auto testing system. For many of the Practice-IT Exercises, additional "hidden" Classes are used, and for this particular one, the code behind the scene is: https://practiceit.cs.washington.edu/problems/bjp5/chapter9/GroceryBill.java But above does not meet the Iverson Class(datastructure)SubmissionRequirements Code from U.W. above, was not intended as a good example, for sure, as things like comments and constructors are missing. The author uses a more advanced "inner classes" to further hide and encapsulate the data structure. Obviously just wrote that code to make the Practice-IT site work. To help understand how these things are really supposed to work, I've extracted the following: Your solution must extend GroceryBill, so here's that Class: GroceryBill.java Class used only for the GroceryBill class We use Item.java for other exercises olic class Item \{ private string name; private double price; private double discount; public Item(String name, double price, double discount) \{ this. name = name; this.price = price; this. discount = discount; \} public double getprice( ) \{ return price; \} public double getDiscount() \{ return discount; \} private string valueTostring(double value) \{ String result ="1"+ Math.abs(value); if (result. indexof(".") == result. length() - 2) \{ result += "0"; \} result = "\$" + result; return result; \} public String tostring() \{ return name +"+ valueTostring(price) +"("+ tring (discount) + ")"; \} // Constructors and field added by Iverson // UW places fields at bottom, then changes for testing private String person; public Employee(String name) \{ person = name; 3 public Employee() \{ this("no name provided"); \} public string tostring() \{ return person; \} // remaining code below from U.W. public int getHours() \{ return baseHours; //40 hours/week \} public double getsalary( ) \{ return basesalary; //$40,000.00 \} public int getVacationdays() \{ return baseVacationDays; //10 days \} public string getVacationform() \{ return baseVacationForm; // yellow \} // From UW: // These are so that test cases can change the base values // and make sure that subclasses also change their values. // (Your code that you submit is NOT supposed to directly use, call, // or modify the values below! They are here only to help Practice-It // successfully test your code. Please ignore them.) private static int basehours =40; private double basesalary =40000.0; private int basevacationDays =10; private string basevacationform = "yellow"; public final void setBaseHours(int hours) \{ baseHours = hours; \} public final void setBasesalary(double salary) \{ basesalary = salary; \} public final void setBaseVacationdays(int days) \{