Write two methods that will make the following code work:

 import java.util.Scanner; public class Calculator { public static void main(String [] args) { double total, num1, num2 = 0; Scanner kb = new Scanner(System.in); System.out.println("Enter number 1"); num1 = kb.nextDouble(); System.out.println("Enter number 2"); num2 = kb.nextDouble(); total = addNumbers(num1, num2); System.out.printf("%.2f + %.2f = %.2f", num1, num2, total); total = subtractNumbers(num1, num2); System.out.printf(" %.2f - %.2f = %.2f", num1, num2, total); } }