/**
  *
  * Write a program that asks the user for their gross income and determines their tax.
  *
  * Assume a Simple Tax system. 15% for income above 40000, 10% below.
  *
  *
  */

 import java.util.Scanner;
 import java.text.DecimalFormat;

 class SimpleTax{
	 public static void main(String [] args){
		 final double TAX15 = .15;
		 final double TAX10 = .10;
		 Scanner scanner = new Scanner(System.in);

		 System.out.println("Enter Income\t");
		 double income = scanner.nextDouble();

		 if(income < 0){
			 System.out.println("Invalid Income");
			 System.exit(1);
		 }

		 double tax;
		 if(income > 40000){
			 tax = income * TAX15;
		 }else{
			 tax = income * TAX10;
		 }

		 DecimalFormat fmt = new DecimalFormat("0.00");
		 System.out.println("The amount of tax you owe is \t$" + fmt.format(tax));
	 }
 }