/**
   A demonstration of a runtime exception using the class JoeMath.
   @author Frank M. Carrano
   @author Timothy M. Henry
   @version 5.0
*/
public class JoeMathDriver
{
   public static void main(String[] args)
   {
      System.out.print("The square root of 9 is ");
      System.out.println(JoeMath.squareRoot(9.0));
      
      System.out.print("The square root of -9 is ");
      System.out.println(JoeMath.squareRoot(-9.0));
      
      System.out.print("The square root of 16 is ");
      System.out.println(JoeMath.squareRoot(16.0));
      
      System.out.print("The square root of -16 is ");
      System.out.println(JoeMath.squareRoot(-16.0));
   } // end main
} // end JoeMathDriver
/*
 The square root of 9 is 3.0
 The square root of −9 is 3.0i
 The square root of 16 is 4.0
 The square root of −16 is 4.0i
*/