Thread: Help me I am trying to get this code to work.

Here is what my compiler is telling me: GeometryCalculator.java:20: error: constructor Sphere in class Sphere cannot be applied to given types;
Sphere sp = new Sphere(r);
^
required: no arguments
found: double
reason: actual and formal argument lists differ in length

import java.util.Scanner;
 
/**
   This is a test driver for the Sphere, Cylinder, and Cone class
   This approach is more object-oriented than the previous one because
   it clearly separates the duties of each class.
*/
public class GeometryCalculator
{
   public static void main(String[] args)
   {
      Scanner in = new Scanner(System.in);
 
      System.out.println("Please enter the radius: ");
      double r = in.nextDouble();
 
      System.out.println("Please enter the height: ");
      double h = in.nextDouble();
 
      Sphere sp = new Sphere(r);
      double v = sp.getVolume();
      double s = sp.getSurfaceArea();
 
      System.out.println("The volume of the sphere is: " + v);
      System.out.println("The surface area of the sphere is: " + s);
 
      Cylinder cy = new Cylinder(r, h);
      v = cy.getVolume();
      s = cy.getSurfaceArea();
 
      System.out.println("The volume of the cylinder is: " + v);
      System.out.println("The surface area of the cylinder is: " + s);
 
      Cone co = new Cone(r, h);
      v = co.getVolume();
      s = co.getSurfaceArea();
 
      System.out.println("The volume of the cone is: " + v);
      System.out.println("The surface area of the cone is: " + s);
   }
}

/**
   This class provides methods to compute the volume and surface area of a sphere.
   @author:
   @version:
*/
public class Sphere
{
 
   /**
      Constructs a Sphere object with input: radius.
      @param aRadius the radius
   */
	 Sphereobject sphere = new Sphereobject();
 
 
 
 
   /**
      Computes the volume of a sphere.
      @return volume of sphere
    */
	 public static double  Computevolume(double r){
 
	 double Volume = 4/3*Math.PI*r * Math.pow(r,2);
 
	 return Volume;
}
 
   /**
      Computes the surface area of a sphere.
      @return surface area of a sphere
    */
 
	public static double computeSurfaceArea(double r){
 
   double SurfaceArea = 4*Math.PI* Math.pow(r,2);
 
	return SurfaceArea;
 
 
	}
		private double r;
}

public class Sphereobject
{
public static void main(String[] args)
{
 
 
	Sphere Sphere1 = new Sphere ();
	}
	}

--- Update ---

I left some comments so it would be easier to understand what I had to do but now I am completely confused as to what I have to do to fix this.

How would I do the latter? just put in (double r)?