Create a class named Exponent . Its main() method accepts an integer value from a user at the keyboard, and in turn passes the value to a method that squares the number (multiplies it by itself ) and to a method that cubes the number (multiplies it by itself twice). The main() method prints the results. Create the two methods that, respectively, square and cube an integer that is passed to them, returning the calculated value. Save the application as Exponent. java. b) Modify the Exponent program so that the cubing method calls the square method, then multiplies that result by the numbers to calculate the cubed value that it returns