Question

Problem 01: GroceryCalculator

Write a program to calculate the cost of a list of grocery items. It includes one attribute: totalCost. It includes five user-defined methods:

• getItemName which asks the user to type an item name and returns the name of the item. It returns a string.
• getItemPrice which asks the user to type the price for an item and returns the price, which return a double.
• getItemQuantity which asks the user to type how many of the item they want to buy and returns an integer variable.
• getTotalGrocery, which calls the above three methods. Inside this method, use a while loop to allow the user to enter more items. The user may type "q" to quit typing more items. In this method, calculate the total cost of all the grocery items and save the result to the class attribute totalCost,
• getTotalCost, which return the total cost of all the grocery items.
• The main method calls two methods: getTotalGrocery and getTotalCost. In this method, print the total cost.

Problem 02: Dog

• Create a class Dog, add name, breed, age, color as the attributes. You need to choose the right types for those attributes.
• Create a constructor that requires no arguments. In this constructor, initialize name, breed, age, and color as you wish.
• Define a getter and a setter for each attribute.
• Define a method toString to return a String type, the returned string should have this information:

“Hi, my name is Lucky. I am a Chiwawa. I am 3 years old, and my color is white.”

• Create a main method. In the main method, create a Dog type object and call setters to set its attributes. Print this object using System.out.println().

Answer 1

PROGRAM -

import java.util.*;
import java.io.*;

public class store{
    double TotalCost;

    //asks the user to type an item name and returns the name of the item. It returns a string.
    public String getItemName(){
        System.out.println("Enter the item name: ");
        Scanner sc = new Scanner(System.in);
        String name = sc.next();
        return name;
    }
    //asks the user to type the price for an item and returns the price, which return a double.
    public double getItemPrice(){
        System.out.println("Enter the item price: ");
        Scanner sc = new Scanner(System.in);
        double price = sc.nextDouble();
        return price;
    }
    //asks the user to type how many of the item they want to buy and returns an integer variable.
    public int getItemQuantity(){
        System.out.println("Enter the item quantity: ");
        Scanner sc = new Scanner(System.in);
        int Quantity = sc.nextInt();
        return Quantity;
    }

    //calls the above three methods. Inside this method, use a while loop to allow the user to enter more items. The user may type "q" to quit typing more items. In this method,
    public void getTotalGrocery()
    {
        double cost = 0;
        while(true)
        {
            String name= getItemName();
            double price = getItemPrice();
            int Quantity = getItemQuantity();
            cost+=price*Quantity;
            Scanner sc = new Scanner(System.in);
            System.out.println("Enter anything to continue, press q to exit.... ");
            String s = sc.next();
            if(s.equals("q"))
            {
                break;
            }

        }
        TotalCost = cost;
    }

    //returns the total cost
    public double getTotalCost(){
        return TotalCost;
    }

    public static void main(String[] args) {

        store s = new store();//creating a new object
        s.getTotalGrocery();//calling to get all items
        System.out.println("The total cost is: "+s.getTotalCost());//print result
    }
}

INTENDATION-

OUTPUT TESTED-

ASK ANY DOUBTS IN THE COMMENTS.