Error i am not getting.can anyone find it.

Question

public class Box
{

double ht,wt,dp;

Box(double h,double w,double d)
{
double h=ht;
double w=wt;
double d=dp;
}
double vol()
{
return ht*wt*dp;
}
}
class Boxdemo
{

public static void main(String[] args) {
Box ob=new Box (10,20,30);
double vol ();
vol =ob.vol();
System.out .println ("volume="+vol);
}
}

Answer 1

remove () while declaring vol in main function.
you are using vol as variable not function.

Answer 2

I have used it both as function and variable so it was giving an error now its running as i used it both with same name.Anyways thanks.