Write a recursive method called starstring that accepts an integer as a parameter and prin...

Write a recursive method called starstring that accepts an integer as a parameter and prints to the console a string of stars (asterisks) that is 2n (i.e., 2 to the nth power) long. For example,

• starString (0) should print * (because 20 == 1)

• starString (1) should print ** (because 21 == 2)

• starString (2) should print **** (because 22 == 4)

• starString(3) should print ******** (because 23 == 8)

• starString(4) should print **************** (because 24 == 16)

The method should throw an IllegalArgumentException if passed a value less than 0.