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Interview Questions and Answers for 'Luxoft' - 3 question(s) found - Order By Newest

Frequently asked question in companies using Hibernate.
  Q1. What is Lazy Initialization in Hibernate ?Hibernate
Admin
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Ans. It's a feature to lazily initialize dependencies , relationship and associations from the Database. Any related references marked as @OneToMany or @ManyToMany are loaded lazily i.e when they are accessed and not when the parent is loaded.

  Sample Code for Lazy Initialization

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   Like         Discuss         Correct / Improve     hibernate   lazy loading hibernate   lazy initialization hibernate   architecture     Asked in 77 Companies      Basic        frequent

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Related Questions

  What are the ways to avoid LazyInitializationException ?
  After which Hibernate version , related Entities are initialized lazily ?
 What are the points to be considered if we move from Eager initialization to Lazy Initialization in Hibernate ?
 How does Lazy Initialization helps improving performance of an application ?
 What does the following exception means

org.hibernate.LazyInitializationException: could not initialize proxy - no Session
 If you are given choice to avoid LazyInitializationException using any of the following measures, which are the ones you will choose and why ?

1. Set lazy=false in the hibernate config file.
2. Set @Basic(fetch=FetchType.EAGER) at the mapping.
3. Make sure that we are accessing the dependent objects before closing the session.
4. Force initialization using Hibernate.initialize


Very Frequently asked to fresh graduates and less experienced. Favorite question in Walk in drives. Frequently asked in Indian Services companies.
  Q2. Difference between Overloading and Overriding ?Core Java
Anonymous
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     Asked in 82 Companies      basic        frequent

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Related Questions

  What are the difference between composition and inheritance in Java?
  What is the difference between Encapsulation and Abstraction?
  What are points to consider in terms of access modifier when we are overriding any method?
 Explain OOPs

or

Explain OOPs Principles

or

Explain OOPs Concepts

or

Explain OOPs features

or

Tell me something about OOPs
 What is Polymorphism in Java ?
  Why every object constructor automatically call super() in Object before its own constructors?
 Can you give a real world example of Encapsulation and Abstraction ?
  Difference between Composition and Inheritance ?
  How compiler handles the exceptions in overriding ?


Frequently asked these days as there are major changes in Java 8.
  Q3. What are new features introduced with Java 8 ?Core Java
Admin
info@buggybread.com
Ans. Lambda Expressions , Interface Default and Static Methods , Method Reference , Parameters Name , Optional , Streams, Concurrency.

  Sample Code for Lambda

  Sample Code for interface default

  Sample Code for Optional

  Sample Code for Streams

  Sample Code for java.time

  Sample Code for Predicate

  Sample Code for Consumer

  Sample Code for MapMerge

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   Like         Discuss         Correct / Improve     java   java8   technical lead   technical architect     Asked in 14 Companies      expert        frequent


Related Questions

  Difference between final and effectively final ? Why is effectively final even required ?
  What is StringJoiner ?
 Why can't we have diamond problem with interfaces ?
  What is the use of Optional ?
 Is it ok to use optional everywhere just to get over nullpointerexception ?
  What is the @FunctionalInterface annotation ?
  Difference between DoubleSummaryStatistics , IntSummaryStatistics and LongSummaryStatistics ?
  Name few "Optional" classes introduced with Java 8 ?
  What are the changes in Java.io in Java 8 ?




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