GroceryList Class:

Name your class as: $$GroceryList$.$java$$

Create a Java class named GroceryList to represent a list of items to buy from the market. This

class should have the following attributes and methods:

Fields :

$$ An integer constant named $$MAX$\_$ITEMS$$ representing the maximum number of items in

the list $($i$.$e$.,10).($The constant should be final and static$)$

$$ Declare an array of $$GroceryItemOrder$$ named $$items$$ which holds the objects of

GroceryItemOrder class. The array should be private.

$$ An integer named $$numItems$$ to store the number of the items currently in the list. It

should be private.

Constructor:

$$ GroceryList Doesn$$t receive any arguments but the constructor instantiates the $$items$$

array with the GroceryItemOrder as the type of the array.

$$ Sets the numItems field to value $0.$

Methods $($be certain to declare the header of each method as listed here$)$:

$$ add receives the item $($as a GroceryItemOrder object : item $)$ and appends the item to

the list and updates the numItem value.It doesn$$t return anything.

$$ getNumItems doesn$$t take any arguments but it returns the total number of items in the

list. The return type is integer.

$$ getTotalCost doesn$$t take any arguments but it returns the total cost of all the items in

the list. $($Hint: use a loop to iterate through the array to calculate the total cost of all

items$).$ The return type is double.

$$ modifyItem receives an index $($as an integer: $0,1,2,5$ etc..$)$ to locate the item in the array

to modify and quantity $($as an integer $1,2,3,4,5$ etc..$)$ to replace the existing quantity with

new quantity. It doesn$$t return anything.

Please make sure to enter the index of the item correctly to modify Item $($Index

starts from $0)$

$$ toString doesn$$t receive any arguments but it returns the String of all the current items

in the list. See the sample program for the format of the returning string.

$($The driver program or main method is in the GroceryMain.java to operate on these classes$)$