modify the while loop so it is an infinite loop. then add code to the end of the

Question

modify the while loop so it is an infinite loop. then add code to the end of the loop that breaks out of the loop if the user enters "n". JAVA PLEASE

package murach.invoice;
//Craig Persad
import java.text.NumberFormat;
import java.util.Scanner;

public class InvoiceApp {

public static void main(String[] args) {
  
  
Scanner sc = new Scanner(System.in);
String choice = "y";
double subtotal = 0;
while (!choice.equalsIgnoreCase("n")) {
// get the input from the user
System.out.print("Enter customer type (r/c/t): ");
String customerType = sc.nextLine();
System.out.print("Enter subtotal: ");
try {
   subtotal = Double.parseDouble(sc.nextLine());
} catch (NumberFormatException e) {
   System.out.println("Error! Invalid number. Try again!");
   continue;
}
  

// get the discount percent
double discountPercent = .1;
  
  
           switch (customerType){
//if (customerType.equalsIgnoreCase("r"));
case "r":
  
if (subtotal < 100) {
discountPercent = 0.0;
}
else if (subtotal >= 100 && subtotal < 250) {
discountPercent = .1;
}
else if (subtotal >= 250 && subtotal <= 500 ) {
discountPercent = .25;
}
else if (subtotal > 500) {
   discountPercent = .30;
}
break;
//else if (customerType.equalsIgnoreCase("c")) {
case "c":  
   discountPercent = .20;
break;
// else if (customerType.equalsIgnoreCase("t")) {
case "t":  
   if (500 > subtotal) {
       discountPercent = .4;
   }
   else if (subtotal > 500) {
       discountPercent = .5;
   }
break;  
default:
   discountPercent = 0;
break;  
}
  
//else { discountPercent = 0; }
  
  

// calculate the discount amount and total
double discountAmount = subtotal * discountPercent;
double total = subtotal - discountAmount;
  

// format and display the results
NumberFormat currency = NumberFormat.getCurrencyInstance();
NumberFormat percent = NumberFormat.getPercentInstance();
System.out.println(
"Discount percent: " + percent.format(discountPercent) + " "
+ "Discount amount: " + currency.format(discountAmount) + " "
+ "Total: " + currency.format(total) + " ");

// see if the user wants to continue
System.out.print("Continue? (y/n): ");
choice = sc.nextLine();
System.out.println();
}
sc.close();
}

}

Explanation / Answer

//Please see below the modified code while loop is infinite loop. and at the end of the loop breaks out of the loop if //the user enters "n

package murach.invoice;
//Craig Persad
import java.text.NumberFormat;
import java.util.Scanner;

public class InvoiceApp {

    public static void main(String[] args) {
      
  
        Scanner sc = new Scanner(System.in);
        String choice = "y";
        double subtotal = 0;
        while (true) {
            // get the input from the user
            System.out.print("Enter customer type (r/c/t): ");
            String customerType = sc.nextLine();
            System.out.print("Enter subtotal:   ");
            try {
                subtotal = Double.parseDouble(sc.nextLine());
            } catch (NumberFormatException e) {
                System.out.println("Error! Invalid number. Try again!");
                continue;
            }
          

            // get the discount percent
            double discountPercent = .1;
          
          
            switch (customerType){
            //if (customerType.equalsIgnoreCase("r"));
            case "r":
          
                if (subtotal < 100) {
                    discountPercent = 0.0;
                }
                else if (subtotal >= 100 && subtotal < 250) {
                    discountPercent = .1;
                }
                else if (subtotal >= 250 && subtotal <= 500 ) {
                    discountPercent = .25;
                }
                else if (subtotal > 500) {
                    discountPercent = .30;
                }
            break;
            //else if (customerType.equalsIgnoreCase("c")) {
            case "c":  
                discountPercent = .20;
            break;
           // else if (customerType.equalsIgnoreCase("t")) {
            case "t":  
                if (500 > subtotal) {
                    discountPercent = .4;
                }
                else if (subtotal > 500) {
                    discountPercent = .5;
                }
            break;  
            default:
                discountPercent = 0;
            break;  
            }
              
            //else { discountPercent = 0; }
          
            

            // calculate the discount amount and total
            double discountAmount = subtotal * discountPercent;
            double total = subtotal - discountAmount;
          

            // format and display the results
            NumberFormat currency = NumberFormat.getCurrencyInstance();
            NumberFormat percent = NumberFormat.getPercentInstance();
            System.out.println(
                    "Discount percent: " + percent.format(discountPercent) + " "
                    + "Discount amount: " + currency.format(discountAmount) + " "
                    + "Total:            " + currency.format(total) + " ");

            // see if the user wants to continue
            System.out.print("Continue? (y/n): ");
            choice = sc.nextLine();
            //breaks out of the loop if the user enters
            if(choice.equalsIgnoreCase("n"))
            {
               break;
            }
          
        }
        sc.close();
        }
   
    }

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