Javascript Loops - having trouble with calculations

import java.util.Scanner;
import javax.swing.JOptionPane;
public class Homework_Four {
        static Scanner  scan = new Scanner(System.in);
//declaring variables
        private static String name,jOptionInput;
        private static int menuChoice,quantity,totalQuantity=0;
        private static double price=0,saleTax=0,totalAmount;
     
     
     
    public static void main(String[] args) {
        javax.swing.SwingUtilities.invokeLater(new Runnable() {
        public void run(){
         
        //entering name
        System.out.print("Please enter your name: ");
        name=scan.nextLine();
     
        System.out.println(" ");
     
        //Printing the menu
        System.out.println("MENU");
        System.out.println("1. Face painting        $50");
        System.out.println("2. Balloon twisting     $45");
        System.out.println("3. Puppet shows         $55");
        System.out.println("4. Stilt walkers        $60");
        System.out.println("5. Bounce house         $80");
        System.out.println("6. Rock wall            $70");
        System.out.println("7. Petting zoo          $65");
        System.out.println("10. Exit");
 
        System.out.println(" ");
             
        //using loop to read the selected menu and the quanity and exit when ten is entered
        while(true)
        {
        System.out.print("Please select your options: ");
        menuChoice =scan.nextInt();
        if(menuChoice==10){break;}
        jOptionInput = JOptionPane.showInputDialog(null,"How many hours would you like?","Number of hours",JOptionPane.INFORMATION_MESSAGE);
        quantity = Integer.parseInt(jOptionInput);
        //call method calculateCost to calculate cost
        totalQuantity=totalQuantity+quantity;
        calculateCost(menuChoice,quantity);
        }
        //getting the sale tax and total amount
        saleTax =price*(0.065);
        totalAmount=price+saleTax;
     
        //printing the displays a receipt of this information
        System.out.println();
        System.out.println("Thank you for ordering with Fantasy Entertainment, "+name);
        System.out.println("Total items ordered: "+totalQuantity);
        System.out.println("Price of food ordered: $"+price);
        System.out.println("Sales tax: $"+saleTax);
        System.out.println("Total amount due: $"+totalAmount);
        System.out.println("You saved: $"+ );
        }});}
 
 
   public static void calculateCost(int menu, int quantity ){
       //calculating sale cost
       switch(menu)
       {
           case 1:
               price=price+(quantity*50);
           break;
           case 2:
               price=price+(quantity*45);
           break;
           case 3:
               price=price+(quantity*55);
           break;
           case 4:
               price=price+(quantity*60);
           break;
           case 5:
               price=price+(quantity*80);
           break;
           case 6:
               price=price+(quantity*70);
           break;
           case 7:
               price=price+(quantity*65);
           break;
           default:
           break;
       } 
     
       }
   }

PHP:

I went another way with it. I need to do the following for the very last output which is "You saved: $"

There two promotions which are:

1. if you select Face painting and balloons --> $10 off
2. if you select all options --> $80 off

 

i use netbeans so right click on file and then click "run file"

 

i have no clue....if i did i wouldnt be posting...i am just trying to figure out the savings part.