Object Oriented Programming interview questions part 5
Object Oriented Programming interview questions part 5
Take as many assements as you can to improve your validate your skill rating
Total Questions: 20
1. What are automatic variables?
Correct Answer is : Local variables
2. The memory for automatic variables ___________________
Correct Answer is : Are allocated and deallocated automatically
3. Scope of an automatic variable _______________
Correct Answer is : Is actually function or block in which it is defined
4. Which among the following is true for automatic variables in general?
Correct Answer is : Automatic variables are invisible to called function
5. If an automatic variable is created and then a function is called then ________________
Correct Answer is : The automatic variable doesn’t get destroyed
6. Where are the automatic variables stored if another function is called in between the execution of program?
Correct Answer is : Stack
7. The static variables of a function ________________
Correct Answer is : Are not automatic variables
8. All variables declared within a block ____________________
Correct Answer is : Are automatic by default
9. What values does uninitialized automatic variables contain?
Correct Answer is : Undefined/Garbage
10. Constructor of automatic variables is called ____________________
Correct Answer is : When execution reaches the place of declaration of automatic variables
11. Does java contain auto or register keywords?
Correct Answer is : No, java supports local variable concept
12. The automatic variables _________________________
Correct Answer is : Must be declared before using
13. Which error is produced if the automatic variables are used without declaration?
Correct Answer is : Undefined symbol
14. In perl, using which operator are the local variables created?
Correct Answer is : my
15. How are automatic variables different from the instance variables?
Correct Answer is : Instance variables are initialized implicitly while automatic are not
16. Which is most appropriate definition of a base class?
Correct Answer is : It is parent of any of its derived class
17. A base class is also known as _____________ class.
Correct Answer is : Super
18. An abstract class is always a __________ class.
Correct Answer is : Base
19. How many base classes can a single class inherit in java?
Correct Answer is : 1
20. How to make a derived class a base class?
Correct Answer is : Make a class derive from it
