Abstract Again

no-email (Damien Seguy), Damien Seguy
Thu, 11 Jan 2024 00:00:00 +0000

A concrete class may have an abstract child: the child class extends the parent class, and also receives the abstract option.
On the other hand, a concrete method, inside any kind of class, cannot be made abstract in a child. The child class can be made abstract, and new methods can be made abstract. But the existing methods cannot be turned back to abstract.