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Core java - Interview Questions and Answers for 'Jabong.com' - 3 question(s) found - Order By Newest

Very Frequently asked to fresh graduates and less experienced. Favorite question in Walk in drives. Frequently asked in Indian Services companies.
  Q1. Difference between Overloading and Overriding ?Core Java
Ans. Overloading - Similar Signature but different definition , like function overloading.

Overriding - Overriding the Definition of base class in the derived class.

  Sample Code for overloading

  Sample Code for overriding

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   Like         Discuss         Correct / Improve     java   oops   overloading   overriding   oops concepts   basic interview question   overloading vs overriding     Asked in 86 Companies      basic        frequent

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Related Questions

  What are the difference between composition and inheritance in Java?
 Explain OOPs

or

Explain OOPs Principles

or

Explain OOPs Concepts

or

Explain OOPs features

or

Tell me something about OOPs
  What is the difference between Encapsulation and Abstraction?
  What are points to consider in terms of access modifier when we are overriding any method?
 What is Polymorphism in Java ?
 Can you give a real world example of Encapsulation and Abstraction ?
  Why every object constructor automatically call super() in Object before its own constructors?
  How compiler handles the exceptions in overriding ?
  Difference between Composition and Inheritance ?


 Q2. How can we create objects if we make the constructor private ?Core Java
Ans. We can do so through a static public member method or static block.

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   Like         Discuss         Correct / Improve     java   oops   static   constructor   static method   static block  private     Asked in 1 Companies


Related Questions

  How can we run a java program without making any object?
  Similarity and Difference between static block and static method ?
  Will the static block be executed in the following code ? Why ?
  Is it possible to compile and run a Java program without writing main( ) method?
  Explain static blocks in Java ?
  Will static block for Test Class execute in the following code ?
  Can we initialize member variables within static block ?
  How can we execute a Java class independently if it doesn't have a static main method ?
 Can we create object in static block ?


 Q3. What will happen if we make the constructor private ?Core Java
Ans. We can't create the objects directly by invoking new operator.

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   Like         Discuss         Correct / Improve     java   oops   constructor   access specifier   private     Asked in 1 Companies      basic

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Related Questions

  What are points to consider in terms of access modifier when we are overriding any method?
  Difference between Public, Private, Default and Protected ?
  Which access specifiers can be used with top level class ? a. public or default b. public or private c. public or protected d. protected or default
  Which access specifier can be used with Class ?
  Can we reduce the visibility of the inherited or overridden method ?
  Can we instantiate the object of derived class if parent constructor is protected ?
  Can we declare an abstract method private ?
 What access the variable gets if we don't provide any access specifier ?
  Can we reduce the visibility of the overridden method ?



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