Interfaces And Abstract Classes - Practice Test

(A) To declare an abstract method

(B) To create a static class

(C) To indicate that a class, method, or variable cannot be further extended, overridden, or modified

(D) To indicate that a method is abstract

(C) To indicate that a class, method, or variable cannot be further extended, overridden, or modified

(A) Only if the constructors are marked as "private"

(B) Yes, an abstract class can have constructors

(C) Only if the constructors are marked as "static"

(D) None of These

(B) Yes, an abstract class can have constructors

(A) No, interfaces cannot have static methods

(B) Only if the methods are marked as "private"

(C) Only if the methods are marked as "final"

(D) Yes, starting from Java 8, interfaces can have static methods with implementations

(D) Yes, starting from Java 8, interfaces can have static methods with implementations

(A) Only if the methods are marked as "final"

(B) Only if the methods are marked as "static"

(C) No, abstract classes cannot have private methods

(D) Yes, starting from Java 9, abstract classes can have private methods with implementations

(D) Yes, starting from Java 9, abstract classes can have private methods with implementations

(A) Only if the methods are marked as "private"

(B) Yes, an abstract class can have static methods with implementations

(C) Only if the methods are marked as "final"

(D) None of These

(B) Yes, an abstract class can have static methods with implementations

Interfaces And Abstract Classes - Study Mode