Abstract - Discussion Page For Q.2484 | Java Programming Questions and Answers | Java Programming Free Online-Tests | LucentBlackBoard

Home > Java Programming > Abstract > Questions and Answers

Which of the following is correct (valid) declaration of a class?

A.	public abstract class Car{ Protected void acc(); }	B.	public interface class Car{ Protected abstract void acc ( ); }
C.	public abstract class Car{ Protected abstract void acc ( ); }	D.	public abstract class Car{ Protected abstract void acc (){ } }

Answer and Explanation

Answer:public abstract class Car{
Protected abstract void acc ( );
}

Explanation:
In the first option a) method is not abstract so it should have implementation but in the example it is not there.

In the second option b) method is protected, actually interface methods are public abstract by default so it is not the Answer.

In the fourth one method is abstract but still it is implemented, so that is not the Answer.

So finally c) is the Answer.

Comment on this Question
Name:

LucentBlackBoard.com has the web's largest collection of over 15,000 aptitude questions and answers with detailed explanation which include subjects like Arithmetic Aptitude, Logical Reasoning, Verbal Ability, General Knowledge, Programming Skills and more!

Our online education portal provides a unique and standard learning experience for students. We enable the students to prepare for most of the entrance and competitive exams like MBA (MAT, GMAT), Engineering (IIT-JEE, AIEEE, GATE), Employment (IAS, Bank PO, Railway, UGCNET), Civil Services and many more. We bring you the best in education by providing technical excellence and creating innovative solutions. We provide facility for online test preparation that offers 24/7 access to relevant subject matter and relative tests. These test preparations help the students to groom themselves and get prepared before actually facing the examination.