Can Abstract Method Be Private?

If a method of a class is private, you cannot access it outside the current class, not even from the child classes of it. But, incase of an abstract method, you cannot use it from the same class, you need to override it from subclass and use. Therefore, the abstract method cannot be private.

Can an abstract class be private?

Abstract classes can have private methods. Interfaces can't. Abstract classes can have instance variables (these are inherited by child classes). Interfaces can't.

Do abstract methods have to be public?

abstract methods have the same visibility rules as normal methods, except that they cannot be private .