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Interview Questions and Answers for 'Nagravision' - 4 question(s) found - Order By Rating

 Q1. How can we make objects if the constructor is private ? Core Java
 This question was recently asked at 'Nagravision'.This question is still unanswered. Can you please provide an answer.


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   Like         Discuss         Correct / Improve     constructor     Asked in 1 Companies


 Q2. What is a class and object ?

or

How would you explain a fresher the concept of class and object in simple terms ?
Core Java
Ans. Class is a template using which objects are created in memory. It's kind of a mold using which objects with body / state are made.


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   Like         Discuss         Correct / Improve     class  object  class vs object     Asked in 4 Companies      basic        frequent


 Q3. Explain Inner Classes ?Core Java
Ans. The accessibility (public, protected, etc.) of the inner class is defined by the outer class.

Just like top-level classes, an inner class can extend a class or can implement interfaces.

Similarly, an inner class can be extended by other classes, and an inner interface can be implemented or extended by other classes or interfaces.

An inner class can be declared final or abstract.Inner classes can have inner classes, but you will have a hard time reading or understanding such complex nesting of classes.

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   Like         Discuss         Correct / Improve     java   oops   classes   inner classes     Asked in 2 Companies      Basic        frequent

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Very frequently asked. Usually followed by questions related to private constructor and synchronized access. Frequently asked in JPMorgan and TCS (Based on 2 feedback)
  Q4. Explain Singleton Design Pattern ?Design
Ans. http://www.buggybread.com/2014/03/java-design-pattern-singleton-interview.html

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   Like         Discuss         Correct / Improve     java   design pattern   singleton   at&t   ebay  fidelity india  united healthcare india     Asked in 46 Companies      intermediate        frequent



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