The most authoritative answer in 2024
-

-
Lucas Kim——Works at the International Development Association, Lives in Washington, D.C., USA.
Abstract classes are
classes that contain one or more
abstract methods. An
abstract method is a method that is declared, but contains no implementation.
Abstract classes may not be instantiated, and require subclasses to provide implementations for the
abstract methods.
read more >>
About “Abstract classes、classes、abstract”,people ask:
QuesHub is a place where questions meet answers, it is more authentic than Quora, but you still need to discern the answers provided by the respondents.