Which of the following statements about interfaces is true?
A) You can define an interface variable that refers to an object of any class in the same package.
B) You cannot define a variable whose type is an interface.
C) You can instantiate an object from an interface class.
D) You can define an interface variable that refers to an object only if the object belongs to a class that implements the interface.

Question

Quizplus · Accepted Answer

An interface variable can refer to an object only if the object's class implements the interface, allowing the object to be treated as an instance of the interface type.

Which of the Following Statements About Interfaces Is True