Java Classes And Methods

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1. What is the return type of a method that does not returns any value?

[A] int

[B] float

[C] void

[D] double

2. What is the process of defining more than one method in a class differentiated by method signature?

[A] Function overriding

[B] Function overloading

[C] Function doubling

[D] None of the mentioned

3. Which of the following is a method having same name as that of it’s class?

[A] finalize

[B] delete

[C] class

[D] constructor

4. Which method can be defined only once in a program?

[A] main method

[B] finalize method

[C] static method

[D] private method

5. Which of these statement is incorrect?

[A] All object of a class are allotted memory for the all the variables defined in the class.

[B] If a function is defined public it can be accessed by object of other class by inheritance.

[C] main() method must be made public.

[D] All object of a class are allotted memory for the methods defined in the class.

6. Which of these class is super class of every class in Java?

[A] String class

[B] Object class

[C] Abstract class

[D] ArrayList class

7. Which of these method of Object class can clone an object?

[A] Objectcopy()

[B] copy()

[C] Object clone()

[D] clone()

8. Which of these method of Object class is used to obtain class of an object at run time?

[A] get()

[B] void getclass()

[C] Class getclass()

[D] None of the mentioned

9. Which of these keywords can be used to prevent inheritance of a class?

[A] super

[B] constant

[C] Class

[D] final

10. Which of these keywords cannot be used for a class which has been declared final?

[A] abstract

[B] extends

[C] abstract and extends

[D] None of the mentioned

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Java Classes And Methods

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