Dear friend

The code given below is according to your description :

import java.util.Scanner;
import java.text.*;

       public class cylinderVolume
       {
         public static void main(String []args)
         {

         double radius, area, pi=3.14;          

         welcomeMessage();   

         radius = receiveRadius();

         area = computeArea(radius);

         outputMessage(area);
         }


         public static void welcomeMessage
         {
             System.out.println("Welcome to my program! ");
             System.out.println("This program will compute the area of a cylinder ");
         }

         public static double receiveRadius()
         {

              Scanner input = new Scanner(System.in);
              double radius;
              System.out.print("Please enter a radius: ");
              radius = input.nextDouble();
              return radius;
         }
            public static double computeArea(double radius)
            {
              double area, pi=3.14;
              area = pi * radius * radius;
              return area;
            }

            public static void outputMessage(double a)
              {
               DecimalFormat num = new DecimalFormat("##.00");
               System.out.println("The area is " + num.format);
            }
         }