Program to demonsrates Method Overloading - Find Volume of cube, cylinder and rectangle

/* Program to demonsrates Method Overloading - Find Volume of cube, cylinder and rectangle */

class Overload
{
    int volume (int x)                 // volume of cube
    {
           return (x*x*x);
    }

    double volume(double r, int h)                // volume of cylinder
    {
           return (3.14519F*r*r*h) ;
    }

    long volume(long l, int b, int h)               // volume of rectangular
    {
           return (l*b*h);
    }
}

class OverloadDemo2
{
    public static void main(String args[ ])
    {   
        Overload v=new Overload();

        System.out.println("Volume of a cube = "+v.volume(10));
        System.out.println("Volume of a cylinder = "+v.volume(2.5,8));
        System.out.println("Volume of a Rectangle = "+v.volume(100L,75,15));
    }
}