(30 points) Write Java statements as required in the following questions: 1) Look at the following partial class definition, and answer the questions that follow it: public class RetailItem{ private...

(30 points) Write Java statements as required in the following questions: 1) Look at the following partial class definition, and answer the questions that follow it: public class RetailItem { private String description; private int unitOnHand; private double price; } a)Write a no-arg constructor for this class. It assigns the description fields to “N/A”, tunitOnHand to 0, and price to 0. b)Write an overloaded constructor that accepts arguments to initialize description and price. It assigns unitOnHand to 0. c)Write another overloaded constructor for this class. The constructor should accept an argument for each of the field. d)Write an accessor method for the description field. e) Write a mutator method for the price field. f)Draw a UML diagram for the class, including the methods you have written.