Interview Questions and Answers for 'L' | Search Interview Question

Interview Questions and Answers - Order By Newest

Q1601. If your application has multiple databases, how many changes you have to made in Hibernate?

Ans. If you have mulitple Databases you just need to add multiple configuration files and create the corresponding SessionFactory object.

Help us improve. Please let us know the company, where you were asked this question :

_{Like Discuss Correct / Improve Asked in 1 Companies}

Q1602. If SOAP is more secure than Rest, Why many applications today use Rest ?

Web Service

Ans. SOAP supports only xml whereas Rest support many other formats.

Rest services are very light weight compared to SOAP.

SOAP services are code heavy as they require creation. of stubs and skeltons.

Help us improve. Please let us know the company, where you were asked this question :

_{Like Discuss Correct / Improve soap rest soap vs rest Asked in 2 Companies}

Q1603. What are different types of IOC containers ?

Design

Ans. J2ee Web Containers and Core Containers

Help us improve. Please let us know the company, where you were asked this question :

_{Like Discuss Correct / Improve Asked in 1 Companies}

Q1604. How to sort objects based on one of the field ?

Core Java

Ans. Using comparable and comparator and sorted collections like TreeSet or TreeMap.

or

use stream api from java 8 onwards which internally refers to comparable and comparator through lambda expressions

Help us improve. Please let us know the company, where you were asked this question :

_{Like Discuss Correct / Improve sort sorting comprator comparable treeset treemap sorting collections Asked in 1 Companies Basic frequent}

Q1605. Given an Employee Table with Salary Column, Find 2nd and 5th highest salary in a particular department.

SQL

Ans. Select salary from (select salary from employee where department = order by salary desc limit 5) emp order by salary limit 1 AND Select salary from (select salary from employee where department = order by salary desc limit 2) emp2 order by salary limit 1

Help us improve. Please let us know the company, where you were asked this question :

_{Like Discuss Correct / Improve sql database find 2nd highest salary sql database Asked in 1 Companies}

Q1606. Difference between Component-Scan and @Component annotation ?

Spring

Ans. @component mark a java class as a bean so that component scan mechanism of spring pick it up and register in IOC container.

Help us improve. Please let us know the company, where you were asked this question :

_{Like Discuss Correct / Improve Asked in 1 Companies}

Q1607. Can we have interface as a replacement for utility class ?

Core Java

Ans. Yes, With Java 8 we can use Interfaces as collection of utility methods through the use of default methods.

Help us improve. Please let us know the company, where you were asked this question :

_{Like Discuss Correct / Improve java 8 interfaces utility class utility classes}

Q1608. Why Java has final class ?

Core Java

^{This question was recently asked at 'Avis'.This question is still unanswered. Can you please provide an answer.}

Help us improve. Please let us know the company, where you were asked this question :

_{Like Discuss Correct / Improve final class final keyword Asked in 1 Companies basic}

Q1609. While working on a web application, you are informed that there is no new data in Database for last few hours ? How would you go about debugging this problem ?

Solution

Ans. Will look into access logs to see if web application is getting any traffic. If not , then will inform the server support team.

Will look into intermediary infrastructure , queues , streams etc to see if there is any choke or throttle there.

If there is any throttle at any point, would make request for either debugging the cause or increasing the infrastructure. For ex - increasing shards in Kinesis.

Help us improve. Please let us know the company, where you were asked this question :

_{Like Discuss Correct / Improve Solution Designing Solutioning Asked in 2 Companies}

Q1610. Set Locators priority wise in selenium WebDriver.

Selenium

Ans. Id locators,Name locators,CSS locators,Xpath locators,DOM locators

Help us improve. Please let us know the company, where you were asked this question :

_{Like Discuss Correct / Improve selenium WebDriver Asked in 1 Companies}

Q1611. Which memory segment is cleaned by Garbage Collection - stack or heap ?

Core Java

Ans. Heap as objects are stored ink heap.

Help us improve. Please let us know the company, where you were asked this question :

_{Like Discuss Correct / Improve memory management stack heap garbage collection}

Q1612. Have you worked on Linux Systems ?

General

^{This question was recently asked at 'HCL Technologies,Symantec'.This question is still unanswered. Can you please provide an answer.}

Help us improve. Please let us know the company, where you were asked this question :

_{Like Discuss Correct / Improve Asked in 2 Companies}

Q1613. What is OSGI ?

OSGI

Ans. OSGI is open service gateway initiative, its used as java framework for developing and deploying the modular softwares.

Help us improve. Please let us know the company, where you were asked this question :

_{Like Discuss Correct / Improve Asked in 23 Companies}

Q1614. What is the use of load-on-startup ?

Design

Ans. The load-on-startup element of web-app loads the servlet at the time of deployment or server start if value is positive. It is also known as pre initialization of servlet.You can pass positive and negative value for the servlet.

Help us improve. Please let us know the company, where you were asked this question :

_{Like Discuss Correct / Improve load on startup web application Asked in 1 Companies}

Q1615. Are final methods faster than regular instance methods ?

Core Java

Ans. Yes. As they cannot be overridden , there is no use of virtual table concept which is used for dynamic binding resolution.

Help us improve. Please let us know the company, where you were asked this question :

_{Like Discuss Correct / Improve final methods final keyword expert}

Q1616. What is virtual table with respect to method overriding in Java ?

Core Java

^{This question is still unanswered. Can you please provide an answer.}

Help us improve. Please let us know the company, where you were asked this question :

_{Like Discuss Correct / Improve vtable virtual method table method overriding runtime polymorphism object oriented programming (oops) oops concepts}

Q1617. How is the virtual method table implemented in Java?

Core Java

^{This question is still unanswered. Can you please provide an answer.}

Help us improve. Please let us know the company, where you were asked this question :

_{Like Discuss Correct / Improve virtual method table method overriding runtime polymorphism object oriented programming (oops) oops concepts expert rare}

Q1618. How many VTables are there for each class ?

Core Java

Ans. There is one VTable for each class.

Help us improve. Please let us know the company, where you were asked this question :

_{Like Discuss Correct / Improve virtual table method vtable runtime polymorphism object oriented programming (oops) oops concepts method overriding intermediate rare}

Q1619. Explain the use of Client certificates for authentication ?

Authentication

^{This question is still unanswered. Can you please provide an answer.}

Help us improve. Please let us know the company, where you were asked this question :

_{Like Discuss Correct / Improve authentication client certificates}

Q1620. How did you use authentication in node.js ?

Node,js

Ans. Using JWT

Help us improve. Please let us know the company, where you were asked this question :

_{Like Discuss Correct / Improve authentication node.js Asked in 2 Companies}

Q1621. Have you ever used java.util.Objects class ?

Core Java

Ans. Yes, We are using requireNonNull method for validating if the object is null.

Help us improve. Please let us know the company, where you were asked this question :

_{Like Discuss Correct / Improve objects util methods rare}

Q1622. If a high CPU Usage happens everyday at a particular time, How would you go about fixing it ?

Server

Ans. We can provision more instances for that particular time slot.

Help us improve. Please let us know the company, where you were asked this question :

_{Like Discuss Correct / Improve aws amazon web service server production support Asked in 1 Companies}

Q1623. Why AWS is better than Azure ?

Cloud Computing

^{This question is still unanswered. Can you please provide an answer.}

Help us improve. Please let us know the company, where you were asked this question :

_{Like Discuss Correct / Improve aws amazon web service Azure}

Q1624. What is a reflexive equals contract ?

Core Java

Ans. An equal contract is said to be reflexive is equality between 2 objects always returns to be true.

For example -

Object o1;
Object o2;

o1.equals(o2); // returns true
o2.equals(o1); //returns true

Help us improve. Please let us know the company, where you were asked this question :

_{Like Discuss Correct / Improve reflexive equals contract}

Q1625. Explain Transitive equals contract.

Core Java

Ans. The equals contract is said to be transitive if

obj1.equals(obj2); and obj2(.equals(obj3)

then obj1.equals(obj3) also returns true.

Help us improve. Please let us know the company, where you were asked this question :

_{Like Discuss Correct / Improve Transitive equals contract rare}

Q1626. What sets you apart from other developers ?

or

What are the distinguished qualities you have ?

General

Ans. https://blog.timesunion.com/careers/the-10-most-important-personality-traits-for-career-success/633/

Help us improve. Please let us know the company, where you were asked this question :

_{Like Discuss Correct / Improve Asked in 32 Companies}

Q1627. Have you ever been in a situation where any of strength became a weakness in some other setting ?

General

^{This question is still unanswered. Can you please provide an answer.}

Help us improve. Please let us know the company, where you were asked this question :

_{Like Discuss Correct / Improve}

Q1628. What is your greatest fear ?

General

^{This question is still unanswered. Can you please provide an answer.}

Help us improve. Please let us know the company, where you were asked this question :

_{Like Discuss Correct / Improve}

Q1629. What sort of challenges do you enjoy ?

General

^{This question is still unanswered. Can you please provide an answer.}

Help us improve. Please let us know the company, where you were asked this question :

_{Like Discuss Correct / Improve}

Q1630. Create an event class in Java.

Core Java

^{This question is still unanswered. Can you please provide an answer.}

Help us improve. Please let us know the company, where you were asked this question :

_{Like Discuss Correct / Improve event class}

Search Interview Questions

Help us and Others Improve. Please let us know the questions asked in any of your previous interview.