Chapter 1 page 47

[pablo santamarta esteban]

At the beginning, second paragraph says:

'Finally, you need to know that -for top-level classes- the abstract modifier can never be combined with the static modifier. We'll cover static method later in this objective, but for now just remember that the following would be illegal:
abstract static void doStuff();'

The phrase in bold should be removed? As top-level classes are not allowed to be marked as static and it is actually talking about methods.

[Roel De Nijs]

Hi pablo santamarta esteban,

First of all, a warm welcome to CodeRanch!

pablo santamarta esteban wrote:'Finally, you need to know that -for top-level classes- the abstract modifier can never be combined with the static modifier. We'll cover static method later in this objective, but for now just remember that the following would be illegal:
abstract static void doStuff();'

The part in bold is important and should not be removed! Because you can create a static nested class which is abstract. Illustrated in the following code snippet:

class Pizzeria { // top-level class
    public static abstract class Pizza {} // static nested class
    public static class SalamiPizza extends Pizza {} // static nested class
}

So Pizza is a static nested abstract class, so the combination is allowed for static nested classes, but not for top-level classes. So without the part in bold, that statement would be clearly incorrect (as shown in this code snippet).

Hope it helps!
Kind regards,
Roel