Error prone? All the above answers look correct. Can you tell us how it
is error prone?

It looks like you have come from C and are expecting non-object-oriented
code. Simple, get over it.

If it is so inconvenient then why don't you write a wrapper around the
Math class to make things a little easier. For example:

public class MathFunctions {

    public static double exp(double someVal) {
       return Math.pow(Math.E, someVal);
    }
}

Now all you have to do is call MathFunctions.exp(1);

You can shorten the class name if you want.

If that is still too difficult I suggestion you learn about the
advantages of an Object-Oriented programming language.

Lionel.

I appreciate Mark Thornton's reply:

import static java.lang.Math.*;

Then pow(2,3) or exp(1) is ready for service. Obviously, I didn't know
this trick.

In comparison, a wrapper class is a waste at all.

I must admit that I prefer exponentiation as an operator rather than a
function call. It suits the mathematicians better, of whom I was one,
and it also guarantees the correct right-associativity of the operator,
which is otherwise up to the programmer in function-call land.