Question 30: Develop a Java web service that supports the method "double add(double x, double y)" for returning the summation of two floating-point numbers; and develop a Java client program to consume this web service. To convert the string "12.5" into a floating-point number 12.5, you could use "double d = Double.parseDouble("12.5");".
Question 31: Develop a Java web service client application that consumes the web service that you developed in Question 30.