// Application to calculate sphere volumes - shows syntax of methods

import java.io.*;

public class VolumeStr
{
   static private double radius,volume;

   public static void main (String[] args) throws IOException
   {
      // set up input stream
      BufferedReader in = new BufferedReader 
                  ( new InputStreamReader ( System.in ));

      System.out.print("Type in the radius of the sphere: ");
      // read string, trim white space, convert to Double, convert to double
      radius = (new Double (in.readLine().trim())).doubleValue();

      volume = sphereVolume(radius);

      System.out.println("Volume is " + volume + "\n");
   }

   // this method is called locally with one argument of type double
   // and returns a double

   static private double sphereVolume(double rad)
   {
      double vol;
      vol = (4.0/3.0) * Math.PI * Math.pow(rad,3);
      return vol;
   }
    
}