Write a program that prompts the user for two numbers, then prints

• The sum

• The difference

• The product

• The average

• The distance (absolute value of the difference)

• The maximum (the larger of the two)

• The minimum (the smaller of the two)

To do so, implement a class

public class Pair
{
   /**
   Constructs a pair.
      \@param aFirst the first value of the pair
      \@param aSecond the second value of the pair
   */
   public Pair(double aFirst, double aSecond) { . . . }

   /**
   Computes the sum of the values of this pair.
      \@return the sum of the first and second values
   */
   public double getSum() { . . . }
   . . .
}

Then implement a class PairTester that constructs a Pair object, invokes its methods, and prints the results.