Question

Goals

In this assignment you must use Java language to program the small application for a grocery buyer.

You will create meaningful utility that implements

1. simple math model for real problem;
2. design of the application logic;
3. basic user interface.

The implementation plus coding style and efficiency will be graded.

Description

The supermarket uses three pricing scenarios for the local products –

1. Monday, Wednesday, and Friday, the product A has fixed regular price of X dollars.
2. Tuesday and Thursday, the product A has price of X dollars, but you can buy three A-product items for Y dollars with 10% discount (Y = 3 * X * 90%).
3. On the weekend, the product A has price of X dollars, but you can buy two and get one for free.

Your application must calculate how much you pay for one item depending on a regular price, day of the week, and number of items.

For example, yogurt has regular price of $3. Then, if you buy 3 yogurts on Sunday your spending will be $2 per item.

It is not as simple as it first appears. Consider the following questions before programming:

1. Are price and how much you pay the same things?
2. In the scenarios 2 and 3, how much you pay for one item if you buy 4 or 5?
3. What is the money value of 1000 item if the product is priced using scenario 2?
4. Does fractional money exist?

Program requirements

1. The inputs for your program are name of the product, regular price for the product, number of items, and day of the week. You may use information from any local grocery store to create a list of 5-7 products to test your program.
2. Your program must calculate how much you pay for the one unit of the product.
3. The output must be in a form “… dollars … cents.”
4. The program must run until the user decides to quit.
5. The program must use methods and branches.
6. Rounding to the cents must be programmed (do not use standard methods).

There is no any sample run, just need a JAVA program to conform the above requirements.

Answer 1

Screenshot

Program

/**
* Program to display price per Item
* Product name,number of items, regular price and day of the week are inputs
* Get each item price in dollar and cent format
*/
import java.util.Scanner;
public class ItemPriceCalculator {
   public static void main(String[] args) {
       //Scanner object to read data from user
       Scanner sc=new Scanner(System.in);
       //Header
       System.out.println("********** PRICE PER ITEM CALCULATOR **********");
       //Loop checker
       System.out.print("Do you want to enter new item (y/n)? ");
       char ch=sc.nextLine().charAt(0);
       //Error check
       while(Character.toUpperCase(ch)!='Y' && Character.toUpperCase(ch)!='N') {
           System.out.println("Error!!!Choice should be y/n");
           System.out.print("Do you want to enter new item (y/n)? ");
           ch=sc.nextLine().charAt(0);
       }
       //Loop until exit
       while(Character.toUpperCase(ch)=='Y') {
           //User input prompts
           System.out.print("\nEnter the name of product: ");
           String productName=sc.nextLine();
           System.out.print("Enter regular price of the product: ");
           float price=sc.nextFloat();
           System.out.print("Enter number of items purchased? ");
           int numPurchased=sc.nextInt();
           sc.nextLine();
           System.out.print("Enter weekday? ");
           String day=sc.nextLine();
           //Price calculator
            if(day.equalsIgnoreCase("Tuesday") || day.equalsIgnoreCase("Thursday")) {
               price=(float)((float)(numPurchased*price*.9))/3;
           }
           else if(day.equalsIgnoreCase("Saturday") || day.equalsIgnoreCase("Sunday")){
               price=(float)((float)((numPurchased-(numPurchased/3))*price))/3;
           }
            //Display result
           int dollar=(int)price;
           float cent=price-dollar;
           System.out.println("Price of "+productName+" per item is "+dollar+" dollars and "+(int)(cent*100)+" cents");
           //Loop repetititon
           System.out.print("\nDo you want to enter new item (y/n)? ");
           ch=sc.nextLine().charAt(0);
           while(Character.toUpperCase(ch)!='Y' && Character.toUpperCase(ch)!='N') {
               System.out.println("Error!!!Choice should be y/n");
               System.out.print("Do you want to enter new item (y/n)? ");
               ch=sc.nextLine().charAt(0);
           }
       }
   }
}

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Output

********** PRICE PER ITEM CALCULATOR **********
Do you want to enter new item (y/n)? y

Enter the name of product: Yogurt
Enter regular price of the product: 3
Enter number of items purchased? 3
Enter weekday? Monday
Price of Yogurt per item is 3 dollars and 0 cents

Do you want to enter new item (y/n)? y

Enter the name of product: Yogurt
Enter regular price of the product: 3
Enter number of items purchased? 3
Enter weekday? Thursday
Price of Yogurt per item is 2 dollars and 70 cents

Do you want to enter new item (y/n)? y

Enter the name of product: Yogurt
Enter regular price of the product: 3
Enter number of items purchased? 3
Enter weekday? Sunday
Price of Yogurt per item is 2 dollars and 0 cents

Do you want to enter new item (y/n)? n

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Note:-

I assume that you are expecting this way