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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.

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   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 ?Design2016-11-15 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.

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   Like         Discuss         Correct / Improve     private constructor  constructor


 Q3. Can a constructor have a private access specifier ?Core Java2017-03-22 19:49:54

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

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   Like         Discuss         Correct / Improve     constructor  private constructor


 Q4. Can we instantiate the object of derived class if parent constructor is private ?Core Java2017-08-14 08:37:37

Ans. No

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   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


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