cashregister101.java

it is a cash register please let me know how i can improve to be more efficient its in java main (2022-03-02)

/* michael nolk Feb 27 2022 ICS 4U1 */

//import java scanner import java.util.Scanner; public class MyProgram { public static void main(String[] args) { //create varible for my bils double fiveBill = 5.00; double tenBill = 10.00; double twentyBill = 20.00; double fifthyBill = 50.00; double hundredBill = 100.00; //create the varible for the coins double quarter = 0.25; double dime = 0.10; double nickel = 0.05;

    //create new scanner object 
    Scanner s = new Scanner(System.in); 
    
    // prompt the cashier for the cost of the item  
    System.out.println("enter price of the item: ");
    double cost = s.nextDouble();
   
     //include tax and output it 
    double amountAfterTax = tax(cost);
    System.out.println("amount after tax = " + amountAfterTax);
   
    //prompt the cashier for the amount of change given
     System.out.println("enter cash given: ");
    double cash = s.nextDouble(); 
    
    // create varible for my key words   
    String coinMethod = "Coin";
    String cashMethod = "Cash";

    

    // create a loop and allow the program to execute over and over again 
   
    
    
    while(true){
  // create if statement to make sure the cash given, is enough 
     if(amountAfterTax > cash){
        System.out.println("          !Err0r!        ");
        System.out.println("*******  N0t En0ugh  *******");
        break;
     }
   
    
    
   
    System.out.println(" ");
    System.out.print(" for the coin method type 'Coin' or type 'Cash' cash method ");
    s.nextLine();
    String input1 = s.nextLine();
   
    // create varibles for my change and invoe my method 
    double changeBack = change(cash, cost);
    
    //output the change owed and amount after tax 
    System.out.println("change owed = " +  changeBack);
  

   
      //creating varible for the amount of change and cash to give to the customer 
    double qrtBack = change(cash, amountAfterTax) / quarter;
    double nickleBack = change(cash, amountAfterTax) / dime;
    double dimeBack = change(cash, amountAfterTax) / nickel;
        
    double fiveBack = change(cash, amountAfterTax) / fiveBill;
    double tenBack = change(cash, amountAfterTax) / tenBill;
    double twentyBack = change(cash, amountAfterTax) / twentyBill;
    double fifthyBack = change(cash, amountAfterTax) / fifthyBill;
    double hundoBack = change(cash, amountAfterTax) / hundredBill;
   
    
         //if statment to break the loop when the coin method is chosen  
   if(input1.equalsIgnoreCase(coinMethod)){
        System.out.println("change due to the customer can be broken down into");
        System.out.println(""); //blank space
        System.out.println("give " + qrtBack + " quarters back"); 
        System.out.println(""); //blank space
        System.out.println("give " + nickleBack + " Nickles back :)");
        System.out.println(""); //blank space
        System.out.println("give " + dimeBack + " Dimes back");
    break;
   }
  //else if statment for the cash method 
   else if(input1.equalsIgnoreCase(cashMethod)){
        System.out.println("change due to the customer can be broken down into");
        System.out.println(""); //blank space
        System.out.println("give " + fiveBack + " Five Dollar Bills"); 
        System.out.println(""); //blank space
        System.out.println("give " + tenBack + " Ten Dollar Bills");
        System.out.println(""); //blank space
        System.out.println("give " + twentyBack + " Twenty Dollar Bills");
        System.out.println(""); //blank space
        System.out.println("give " + fifthyBack + " Fifthy Dollar  Dollar Bills ");
        System.out.println(""); //blank space
        System.out.println("give " + hundoBack + " Hundred Dollar Bills ");
    break;
    }
}
}

//create method public static double change(double amountGiven, double cost) { double amountDue = ( (double)((int) Math.round((amountGiven - cost)*100)) / 100.00 ); return amountDue; } //now time for the tax method hahhaha :( me no like tax public static double tax(double cost) { double tax = cost * 0.13; double taxCost = tax + cost; double amountAftTax = ( (double)((int) Math.round((taxCost)*100)) / 100.00); return amountAftTax;

    }

}