Interface - Discussion Page For Q.2870 | Java Programming Questions and Answers | Java Programming Free Online-Tests | LucentBlackBoard

Home > Java Programming > Interface > Questions and Answers

interface A{
Int i=0;
}
interface B extends A{
Int i=1;
}
interface C extends B{
Int i=2;
}

Class Manager implements C
{
Int i=3;
Public static void main(String args[])
{
C c1=(C)new Manager();
System.out.println(c1.i);
}
}

A.	3	B.	ClassCastException
C.	compiletime error	D.	none of the above

Answer and Explanation

Answer:3

Explanation:
Here a class Manager implements C which is an interface so it will not throw any compile time error,and while creating an object we are creating an object of manager and trying to store in an c1 variable which is of type C.and manager is also of type C.. So ans is a)

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.