This needs to be done in Java!(Calculating Sales) An online retailer sells five products whose retail prices are as follows: Product 1, $2.98; product 2, $4.50; product 3, $9.98; product 4, $4.49 and product 5, $6.87. Write an application that reads a series of pairs of numbers as follows:product numberquantity soldYour program should use a switch statement to determine the retail price for each product. It should calculate and display the total retail value of all products sold. Use a sentinel-controlled loop to determine when the program should stop looping and display the final results.

The following steps need to be taken for the given program:Inside an infinite while loop, using Scanner class, we ask user for an integer input where number entered represents the product number and 0 represents exit.Next, we ask for product quantity.Next, we use a switch case to calculate the product total for this quantity and aggregate this into totalRetailValue variable.After the end of the while loop (done via break command when 0 is entered), we print the totalRetailValue.The following is the required Java program with thoroughly added comments as an explanation:1import java.util.Scanner; 2 3public class SalesCalculator { 4 public static void main(String[] args) { 5 Scanner input = new Scanner(System.in); 6 double totalRetailValue = 0.0; 7 8 // Sentinel value to stop the loop 9 int productNumber = 0; 10 11 while (true) { 12 // Prompt for the product number 13 System.out.print("Enter product number (1-5, 0 to exit): "); 14 productNumber = input.nextInt(); 15 16 if (productNumber == 0) { 17 // Exit the loop if the sentinel value is entered 18 break; 19 } 20 21 // Prompt for the quantity sold 22 System.out.print("Enter quantity sold: "); 23 int quantitySold = input.nextInt(); 24 25 // Calculate retail price based on the product number 26 double retailPrice = 0.0; 27 28 switch (productNumber) { 29 case 1: 30 retailPrice = 2.98; 31 break; 32 case 2: 33 retailPrice = 4.50; 34 break; 35 case 3: 36 retailPrice = 9.98; 37 break; 38 case 4: 39 retailPrice = 4.49; 40 break; 41 case 5: 42 retailPrice = 6.87; 43 break; 44 default: 45 System.out.println("Invalid product number. Please enter a number between 1 and 5."); 46 continue; // Continue to the next iteration of the loop 47 } 48 49 // Calculate the total retail value for the current product 50 double productTotal = retailPrice * quantitySold; 51 52 // Add the current product's total to the overall total 53 totalRetailValue += productTotal; 54 } 55 56 // Display the total retail value 57 System.out.printf("Total retail value of all products sold: $%.2f%n", totalRetailValue); 58 } 59} 60The following is the screenshot of the above-provided code:The following is the output of the above-provided program: