For this assignment, your Item class must also implement the Comparable interface. Assume, for

example, your Item is called Circle, then the class header will be as follows:

public class Circle implements Comparable

Add comapreTo method to your class. The method takes an Item object as input and returns either

$0,-1,$ or $1$ based on whether the input Item is equal to$,$ larger than, or smaller than the current Item,

respectively. Note that Items are to be sorted on the String attribute first then on the int attribute. For example, if your Item is a Circle that has color and radius as the String and int instance variables respectively. Assume you instantiated the following circle objects:

Circle c$1=$ new Circle$($red$,10)$;

Circle c$2=$ new Circle$($Red$,20)$;

Circle c$3=$ new Circle$($Blue$,20)$;

Then

c$1.$compareTo$($c$2)$ returns $-1$ because red is equal to Red and $10<20.$

c$3.$compareTo$($c$2)$ returns $-1$ because Blue $<$ red in alphabetical order ignoring the case.

Part $2$:

Identify two subitems that are related to your Item. The names of your subitems must be meaningful and related to the main Item. For example, if your Item is Car, then the two subitems could be Truck and Sedan.

Implement ItemA class that extends Item as follows:

$1.$ include one private instance variable of type integer.

$2.$ implement a three$-$arg constructor. The constructor must take input parameters in the following order: String, integer $($for the parent class$),$ then integer $($for the child class$).$

$3.$ implement getter and setter for the instance variable of your ItemA class

$4.$ implement toString method that returns a string representation of the object where all instance variables are in one line and separated by tabs$.$ This method must call the toString method of Item. Do not include any text other than the values of the instance variables.

$5.$ implement equals method. This method calls equals method from Item first and, if

ture, it checks the equality of the ItemA$$s instance variables.

Implement ItemB class that extends Item as follows:

$1.$ include one private instance variable of type boolean.

$2.$ implement a three$-$arg constructor. The constructor must take input parameters in the following order: String, integer, then boolean.

$3.$ implement getter and setter for the instance variable of ItemB class

$6.$ implement toString that returns a string representation of the objects where all instance variables are in one line and separated by tabs$.$ This method must call the toString

method of Item. Do not include any text other than the values of the instance variables.

$7.$ implement equals method. This method calls equals method from Item first and, if ture, it checks the equality of the ItemB$$s instance variables.