Volume of a Sphere in Java Example

In Volume of a Sphere in Java Example , Math.PI is used because it denotes the value of pi i.e. 3.1414. Math.pow(r,3.0) is used for computing y³

Here is the Java Example for Volume of a Sphere

class  VolumeSphere 
 {           
              public  static  void  main  (String  args [ ] )            
       {                        
                int    r;                        
               double  m,v;                       
               r=9;                         
               m=Math.pow(r,3.0);                        
               v= (double)4/3*Math.PI*m;                        
              System.out.println("Volume  of  a  Sphere  is  "+v);           
        } 
  }