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
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 Help us improve. Please let us know the company, where you were asked this question : Like Discuss Correct / Improve Asked in 77 Companies Basic frequent 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 If you are given choice to avoid LazyInitializationException using any of the following measures, which are the ones you will choose and why ? 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
Ans. Overloading - Similar Signature but different definition , like function overloading. Sample Code for overloading Sample Code for overriding Help us improve. Please let us know the company, where you were asked this question : Like Discuss Correct / Improve Asked in 86 Companies basic frequent Related Questions What are the difference between composition and inheritance in Java? Explain 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 ? Frequently asked these days as there are major changes in Java 8. Q3. What are new features introduced with Java 8 ? Core Java
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 Help us improve. Please let us know the company, where you were asked this question : Like Discuss Correct / Improve 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 ? Name few "Optional" classes introduced with Java 8 ? What was the driving force to introduce default methods in Interfaces wef from Java 8 ? Is it ok to use optional everywhere just to get over nullpointerexception ? What is concurrent interface ? What is the @FunctionalInterface annotation ?
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What is Lazy Initialization in Hibernate ?
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