Untitled

import java.util.Scanner;

public class Sphere {

    public static void main(String[] args) {

                //Declarations
                int cont = 0;
                double radiusNum;
                double volume;
                double output;
                Calculations sc;


                // Create scanner object
                Scanner input = new Scanner(System.in);

                System.out.println ("Welcome to Volume of Sphere calulator!");

                //next line
                System.out.println("");

                //loop variable input
                System.out.print("Would you like to calculate the volume now? Please enter 1 for Yes and 2 for No: ");
                        cont = input.nextInt();

                //next line
                System.out.println("");


        // begin while loop
        while(cont == 1)
        {
                //Prompt the user to enter the radius
                System.out.print("Please enter the radius: ");
                radiusNum = input.nextDouble();

                sc = new Calculations ();

                volume = sc.volumeOfSphere(radiusNum);

                System.out.println("The volume of a sphere with a radius of " + radiusNum + " has a volume of " + volume);

                //next line
                System.out.println("");

                //ask the user if he/she wants to enter another one
                System.out.print("Would you like to calculate another volume? Please enter 1 for Yes, 2 for No: ");
                                cont = input.nextInt();

                //next line
                System.out.println("");
        }

        System.out.print ("Thank you!");
}
}