Core Java - Interview Questions and Answers for 'Private constructor' | Search Java Interview Question

Core Java - Interview Questions and Answers for 'Private constructor' - 4 question(s) found - Order By Newest

Q1. Can we instantiate the object of derived class if parent constructor is protected ?

Core Java

^Anonymous

Ans. Yes, as protected constructor is accessible in sub class.

Help us improve. Please let us know the company, where you were asked this question :

_{Like Discuss Correct / Improve java oops constructor access specifier protected yes-no private constructor}

Q2. Have you ever felt the need of keeping the constructor private ?

Design

^{2016-11-15 09:40:58}

Ans. Yes, When either we don't want an object to be created ( class having all static elements and hence not required ) or object to be created using a static method or static block. One such example could be a situation when we would like app to load objects at start up and we would like to restrict new object creation by any request.

Help us improve. Please let us know the company, where you were asked this question :

_{Like Discuss Correct / Improve private constructor constructor}

Q3. Can a constructor have a private access specifier ?

Core Java

^{2017-03-22 19:49:54}

Ans. Yes, declaring a constructor private means disabling the creation of object that way using new operator.

Help us improve. Please let us know the company, where you were asked this question :

_{Like Discuss Correct / Improve constructor private constructor}

Q4. Can we instantiate the object of derived class if parent constructor is private ?

Core Java

^{2017-08-14 08:37:37}

Ans. No

Help us improve. Please let us know the company, where you were asked this question :

_{Like Discuss Correct / Improve constructor private constructor}

Q5. How can we create objects if we make the constructor private ?

Core Java

a. We can't create objects if constructor is private

b. We can only create objects if we follow singleton pattern

c. We can only create one object

d. We can create new object through static method or static block

Ans.d. We can create new object through static method or static block

Search Interview Questions

Help us and Others Improve. Please let us know the questions asked in any of your previous interview.