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| Interview Questions and Answers for 'Hexaware' - 10 question(s) found - Order By Newest | ||||
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| Ans. OOPs or Object Oriented Programming is a Programming model which is organized around Objects instead of processes. Instead of a process calling series of processes, this model stresses on communication between objects. Objects that all self sustained, provide security by encapsulating it's members and providing abstracted interfaces over the functions it performs. OOP's facilitate the following features 1. Inheritance for Code Reuse 2. Abstraction for modularity, maintenance and agility 3. Encapsulation for security and protection 4. Polymorphism for flexibility and interfacing | ||||
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 Discuss Correct / Improve  oops oops features  Asked in 260 Companies  basic  frequent | ||||
 Frequently asked at Manhattan Associates ( Based on 2 feedback ) | ||||
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| Ans. Its an anonymous method without any declaration. Lambda Expression are useful to write shorthand Code and hence saves the effort of writing lengthy Code. It promotes Developer productivity, Better Readable and Reliable code. | ||||
 Sample Code for lambda | ||||
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| Discuss Correct / Improve java java8 lambda expression architecture Asked in 58 Companies expert frequent | ||||
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| Frequently asked question in companies using Hibernate. | ||||
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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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| Discuss Correct / Improve hibernate lazy loading hibernate lazy initialization hibernate architecture Asked in 77 Companies Basic frequent | ||||
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| Ans. Polymorphism means the condition of occurring in several different forms. Polymorphism in Java is achieved in two manners 1. Static polymorphism is the polymorphic resolution identified at compile time and is achieved through function overloading whereas 2. Dynamic polymorphism is the polymorphic resolution identified at runtime and is achieved through method overriding. | ||||
| Sample Code for overloading Sample Code for overriding | ||||
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| Discuss Correct / Improve polymorphism object oriented programming (oops) oops concepts oops concepts Asked in 108 Companies Basic frequent | ||||
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| Frequently asked in high end product companies. Frequently asked in Deloitte. | ||||
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| Ans. https://medium.com/javarevisited/internal-working-of-hashmap-in-java-97aeac3c7beb#:~:text=HashMap%20internally%20uses%20HashTable%20implementation,the%20entries%20into%20the%20map. | ||||
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| Ans. The Spring Application starts with the main() method. Spring Application has a Main Class where main() method has a static method run() which takes two arguments, one is class type and second is string array. Spring Application will bootstrap our application, starts auto-configured tomcat web server.When SpringApplication.run() command is invoked, the Application Context is created. The createApplicationContext method checks if it is a web or standalone application based on the type it creates for the context.When the constructor of the context is invoked, it will register the annotated class beans with the context. All your @Repository, @Component, @Service, and Controller beans will be registered and the context is returned. | ||||
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| Ans. [Open Ended Answer] | ||||
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| Ans. Abstraction, Encapsulation, Polymorphism , Composition and Inheritance | ||||
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| Ans. Var args is the feature of Java that allows a method to have variable number of arguments. Var args are used when we are not sure about the number of arguments a method may need. Internally java treats them as array. Declarations of methods with var args void method(int... x){}; void method(int x, int... y){}; | ||||
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| This question was recently asked at 'Hexaware'.This question is still unanswered. Can you please provide an answer. | ||||
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Which Java version introduced Lambda expressions ?
