Question

For this program I ran it and it said illegal start of the expression for line 49 where I have public static double how do I fix it?

A bakery sells three types of muffins whose prices are as follows: 1- blueberry muffin, $2.98 2- chocolate chip muffin, $4.50 and 3- banana muffin, $9.98. You will write an application which calculates the total retail value of the sold muffins. Please check the following requirements: • Create a sentinel-controlled while loop. The flag value will be 0. Display flag value in your messages. • Display the menu and ask for the muffin number (int) (1 for blueberry one, 2 for chocolate chip one, or 3 for banana one). • Then, ask for the quantity sold for the related muffin (int). • Create a switch a statement to calculate the retail price for each muffin. • When the user terminates the application, display the total retail value (double) of all muffins. • Additionally, add an if-else statement to check whether the user only enters 1, 2, 3 or 0. If the user enters invalid input, display a message that the user can only enter 1, 2, 3 or 0. Then, ask for new input. (8 pts) UPLOAD Sales.java

5

Sample output: Total retail value of all muffins sold is 10*4.50 + 10*9.98 + 15*9.98=294.50

// Sales.java
// Determining the price of the muffins
import java.util.Scanner;

public class Sales {
  
   public static void main (String[] args) {
       // Initiating variables
       double price;
       int quantity;
       int item = 1;
       double totalValue = 0;
      
       // Create Scanner to obtain input from the window
       Scanner userInput = new Scanner(System.in);
      
       // Ending the loop if you select 0
       while (item != 0) {
           System.out.println ("0 = Exit");
           System.out.println ("1 = Blueberry Muffin");
           System.out.println ("2 = Chocolate Chip Muffin");
           System.out.println ("3 = Banana Muffin");
           System.out.print ("Enter the muffin number");
          
           // Converting to int
           item = userInput.nextInt();
           // Verifying that youre selecting 0, 1, 2, or 3
       if (item < 0 || item > 3) {
           System.out.println ("Choose a valid number%n");
       }
       // If you choose any number other than 0, enter the quantity
       else if (item != 0) {
           System.out.print ("Enter the quantity:");
           quantity = userInput.nextInt();
          
           // Getting the price of the muffin
           price = getValue(item);
          
           // Getting the total value of the muffins
           totalValue += (quantity * price);
          
           System.out.println();
       }
      
       //output
       System.out.printf("%nTotal retail value of all muffins sold is: $%.2f%n", totalValue);
   }
      
public static double getValue(int itemType) {
   switch(itemType) {
       case 1:
           return 2.98;//blueberry
       case 2:
           return 4.50;//chocolate chip
       case 3:
           return 9.98;//banana
       default:
           return 0.0;
       }
   }
}

Answer 1

Answer:

Explanation:

By mistake, you have written the static function inside the main function only and one curly brace was missing. Otherwise the code is perfectly fine. Fixed that error by taking the getValue function out of the main function curly braces.

Code:

import java.util.Scanner;

public class Main {
  
public static double getValue(int itemType) {
switch(itemType) {
case 1:
return 2.98;//blueberry
case 2:
return 4.50;//chocolate chip
case 3:
return 9.98;//banana
default:
return 0.0;
}
}
  
public static void main (String[] args) {
// Initiating variables
double price;
int quantity;
int item = 1;
double totalValue = 0;
  
// Create Scanner to obtain input from the window
Scanner userInput = new Scanner(System.in);
  
// Ending the loop if you select 0
while (item != 0) {
System.out.println ("0 = Exit");
System.out.println ("1 = Blueberry Muffin");
System.out.println ("2 = Chocolate Chip Muffin");
System.out.println ("3 = Banana Muffin");
System.out.print ("Enter the muffin number");
  
// Converting to int
item = userInput.nextInt();
// Verifying that youre selecting 0, 1, 2, or 3
if (item < 0 || item > 3) {
System.out.println ("Choose a valid number%n");
}
// If you choose any number other than 0, enter the quantity
else if (item != 0) {
System.out.print ("Enter the quantity:");
quantity = userInput.nextInt();
  
// Getting the price of the muffin
price = getValue(item);
  
// Getting the total value of the muffins
totalValue += (quantity * price);
  
System.out.println();
}
  
//output
System.out.printf("%nTotal retail value of all muffins sold is: $%.2f%n", totalValue);
}
  

}

}

Output:

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