import java.text.NumberFormat;

public class InvoiceCalc{

final static double DISCOUNT_PERCENT = 0.1;

final static double TAX_PERCENT = 0.05;

public static void main(String[] args){

double invoiceSubtotal = 285.36;

double discount = invoiceSubtotal * DISCOUNT_PERCENT;

double subtotalBeforeTax = invoiceSubtotal - discount;

double salesTax = subtotalBeforeTax * TAX_PERCENT;

double invoiceTotal = subtotalBeforeTax + salesTax;

NumberFormat currencyFormat = NumberFormat.getCurrencyInstance();

System.out.println("Subtotal : " + currencyFormat.format(invoiceSubtotal) + " -- with number value : " + invoiceSubtotal);

System.out.println("Discount : " + currencyFormat.format(discount) + " -- with number value : " + discount);

System.out.println("Subtotal after discount : " + currencyFormat.format(subtotalBeforeTax) + " -- with number value : " + subtotalBeforeTax);

System.out.println("Sales Tax : " + currencyFormat.format(salesTax) + " -- with number value : " + salesTax);

System.out.println("Total : " + currencyFormat.format(invoiceTotal) + " -- with number value : " + invoiceTotal);

}

}