This program is to be in Java 2. Define a Groceryltem class that represents a re
ID: 3606485 • Letter: T
Question
This program is to be in Java
2. Define a Groceryltem class that represents a request to purchase a particular item at the grocery store in a given quantity (for example, two boxes of cereal). A Groceryltem object should store an item name (a String), an item quantity (an int), and a unit price (a double). Your Groceryltem class should contain the following methods: *A public constructor that takes an item name, quantity, and unit price, and assigns them to the appropriate instance variables. *A getCost() method that returns the total cost of this item (its unit price times its quantity). For example, three cans of soup that cost 1.50 each would have a total cost of 4.50 *A setQuantity() method that sets the Groceryltem's quantity to the supplied value. YouExplanation / Answer
GroceryItem.java
public class GroceryItem {
//Declaring instance variables
private String name;
private int quantity;
private double pricePerUnit;
//Parameterized constructor
public GroceryItem(String name, int quantity, double pricePerUnit) {
this.name = name;
this.quantity = quantity;
this.pricePerUnit = pricePerUnit;
}
//Getting the cost of each item
public double getCost()
{
return quantity*pricePerUnit;
}
//Setter method which sets the quanity
public void setQuantity(int quantity)
{
this.quantity=quantity;
}
/* toString() method which displays
* the content of an object inside it
*/
@Override
public String toString() {
return " Name=" + name + " Quantity=" + quantity
+ " Price Per Unit=" + pricePerUnit;
}
}
________________
GroceryList.java
import java.util.Arrays;
public class GroceryList {
//Declaring variables
private GroceryItem list[] = null;
int no_of_items;
//Zero argumented constructor
public GroceryList() {
//Creating an array of size 10
list = new GroceryItem[10];
//initialize the no of items to zero
no_of_items = 0;
}
//This method will add an item to the grocery list
public void add(GroceryItem item) {
//Checking the no of items in the grocery list
if (no_of_items < 10) {
list[no_of_items] = item;
no_of_items++;
}
else
System.out.println("::Basket Full ::");
}
/* This method will find the total cost
* of all the items in the grocery list
*/
public double getTotalCost() {
double tot_cost = 0.0;
for (int i = 0; i < no_of_items; i++) {
//Calculating the total cost
tot_cost += list[i].getCost();
}
return tot_cost;
}
//toString() method is used to read the contents of an object
@Override
public String toString() {
for(int i=0;i<no_of_items;i++)
{
System.out.println(list[i].toString());
}
return "";
}
}
__________________
Test.java
public class Test {
public static void main(String[] args) {
//Creating an GroceryList Object
GroceryList gl=new GroceryList();
//Creating an GroceryItemOrder object by passing values as arguments
GroceryItem gio1=new GroceryItem("Apples",10,0.20);
//Adding the Grocery item to the Grocery list
gl.add(gio1);
GroceryItem gio2=new GroceryItem("Strawberries",5,5);
gl.add(gio2);
GroceryItem gio3=new GroceryItem("Chocolate",50,1);
gl.add(gio3);
GroceryItem gio4=new GroceryItem("Pineapples",5,5);
gl.add(gio4);
GroceryItem gio5=new GroceryItem("Milk",2,3);
gl.add(gio5);
GroceryItem gio6=new GroceryItem("Chewing Gums",20,0.20);
gl.add(gio6);
GroceryItem gio7=new GroceryItem("Lettuce",2,1);
gl.add(gio7);
GroceryItem gio8=new GroceryItem("Yogurt",3,0.50);
gl.add(gio8);
GroceryItem gio9=new GroceryItem("Chicken",1,7);
gl.add(gio9);
GroceryItem gio10=new GroceryItem("Banana",12,0.50);
gl.add(gio10);
System.out.println(":: List Of Grocery Items ::");
//Displaying all the items in the Grocery list
System.out.println(gl.toString());
//Displaying the total cost of all the items in the Grocery List
System.out.println("Toatl Cost of All Items :$"+gl.getTotalCost());
}
}
___________________
Output:
:: List Of Grocery Items ::
Name=Apples
Quantity=10
Price Per Unit=0.2
Name=Strawberries
Quantity=5
Price Per Unit=5.0
Name=Chocolate
Quantity=50
Price Per Unit=1.0
Name=Pineapples
Quantity=5
Price Per Unit=5.0
Name=Milk
Quantity=2
Price Per Unit=3.0
Name=Chewing Gums
Quantity=20
Price Per Unit=0.2
Name=Lettuce
Quantity=2
Price Per Unit=1.0
Name=Yogurt
Quantity=3
Price Per Unit=0.5
Name=Chicken
Quantity=1
Price Per Unit=7.0
Name=Banana
Quantity=12
Price Per Unit=0.5
Toatl Cost of All Items :$128.5
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