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

Interview Questions and Answers - Order By Newest

Q961. Have you ever worked with encrypted Tokens and How ?

^{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}

Q962. 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}

Q963. How to deal with double hop authentication issue?

Authentication

^{This question was recently asked at 'Bank Of America'.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 1 Companies}

Q964. 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}

Q965. What is Time slicing with respect to Threads ?

Operating System

Ans. Time Slicing is the process to divide the available CPU time to the available runnable threads.

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

_{Like Discuss Correct / Improve Time Slicing threads thread scheduling thread scheduler}

Q966. What is Thread scheduler ?

Operating System

Ans. Thread Scheduler is the Operating System service that allocates the CPU time to the available runnable threads.

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

_{Like Discuss Correct / Improve Thread scheduler threads}

Q967. What are the different ways to avoid multi Threading related problems in Java ?

Core Java

Ans. Synchronization,
Concurrent classes,
Volatile keyword,
Implementing concurrent Lock interface,
Immutable classes

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

_{Like Discuss Correct / Improve multithreading threads ways to avoid thread related problems synchronization volatile concurrent collections Intermediate}

Q968. Can you write code to copy one array into another ?

Data Structure

^{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}

Q969. Difference between Arrays and LinkedList ?

Data Structure

^{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 arrays vs linkedlist}

Q970. In an array every element is repeated twice except one, Find that element?

Data Structure

^{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}

Q971. Find number of recycled pairs in n array.

Data Structure

^{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}

Q972. Find the length of the non repeated numbers in an array.

Data Structure

^{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}

Q973. Can we make array volatile in Java ?

Core Java

Ans. Yes, you can make an array (both primitive and reference type array e.g. an int array and String array) volatile in Java but only changes to reference pointing to an array will be visible to all threads, not the whole array

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

_{Like Discuss Correct / Improve arrays volatile}

Q974. Write a program to insert a value after a specific value in an array.

Data Structure

^{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}

Q975. Which Java version supports Interface Default methods ?

Core Java

Ans. Java 1.8 or Java 8

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

_{Like Discuss Correct / Improve default methods interface default methods java 8 java 8 features}

Q976. What is the use of sql dialect ?

Hibernate

Ans. Dialect means "the variant of a language".

Similarly in case of SQL Dialect we specify what dialect of SQL to be generated keeping in mind of underlying database.

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

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

Q977. Which jar files need to be included for using Hibernate ?

Hibernate

Ans. hibernate-orm
hibernate-validator
hibernate-ogm
hibernate-search

or you can download hibernate core with all dependencies.

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

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

Q978. Diff between Runtime.getRunTime().gc() and System.gc()

Core Java

^{This question was recently asked at 'CIGNEX Datamatics'.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 1 Companies}

Q979. How to run jar file using command prompt

Core Java

^{This question was recently asked at 'CIGNEX Datamatics'.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 jar running jar using command line cron entry setting java app as cron Asked in 1 Companies}

Q980. Can we call a static method using reference currently pointing to null.

Core Java

Ans. yes, we can.
exa: public class Java{
public static void main(String... args) {
JAva j= null;
j.greeting(); // call with null reference
}
public static void greeting() {
System.out.println("Hello World");
}
} // output: Hello World

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

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

Q981. Have you ever worked on migrating AWS services and databases from one account to another ?

Amazon Web Services (AWS)

^{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 Migration Basic}

Q982. Have you worked with Data Feeds ?

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 Datafeed}

Q983. Have you heard of volatile Table in Teradata ?

Teradata

Ans. If you create table with VOLATILE option, the life of the table will be only for the current session.
It will be automatically dropped by Teradata manager once session expires.

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

_{Like Discuss Correct / Improve teradata database volatile table}

Q984. Is this array declaration correct ? If not , Why ?

String[] strArray = new String[];

Core Java

Ans. No, We haven't specified the size of array to be initialized.

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

_{Like Discuss Correct / Improve arrays array initialization}

Q985. Is this array initialization correct ? If Yes, What will be the size of array ?

String[] strArray = new String[]{"Buggy","Bread"};

Core Java

Ans. Yes, size of the array will be 2.

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

_{Like Discuss Correct / Improve arrays array initialization}

Q986. Is this array initialization correct ? If Yes, What will be the size of array ?

String[] strArray = new String[3]{"Buggy","Bread"};

Core Java

Ans. No. It will result in error saying "Cannot define dimension expressions when an array initializer is provided"

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

_{Like Discuss Correct / Improve arrays array initialization}

Q987. Is this code valid

String[] strArray = new String[2];
strArray.length = 5;

Core Java

Ans. It will give compile time error saying "The final field array.length cannot be assigned"

Arrays once initialized cannot be resized.

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

_{Like Discuss Correct / Improve arrays array initialization}

Q988. What is TypeCasting ?

Core Java

Ans. Assigning a value of one type to a variable of another type is known as Type Casting.

Example :

int x = 10;
byte y = (byte)x;

In Java, type casting is classified into two types, Widening Casting(Implicit) widening-type-conversion and Narrowing Casting (Explicitly done) narrowing-type-conversion.

Widening or Automatic type converion - Automatic Type casting take place when,the two types are compatible and the target type is larger than the source type

Example :

public class Test {
public static void main(String[] args) {
int i = 100;
long l = i; //no explicit type casting required
float f = l;//no explicit type casting required
System.out.println("Int value " i);
System.out.println("Long value " l);
System.out.println("Float value " f);
}
}

Narrowing or Explicit type conversion - When you are assigning a larger type value to a variable of smaller type, then you need to perform explicit type casting.

Example :

public class Test{
public static void main(String[] args) {
double d = 100.04;
long l = (long)d; //explicit type casting required
int i = (int)l;//explicit type casting required
System.out.println("Double value " d);
System.out.println("Long value " l);
System.out.println("Int value " i);
}
}

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

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

Q989. Where to use interface and abstract class ?

Core Java

^{This question was recently asked at 'Exterro,Equator Business Solutions'.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}

Q990. Is java fully platform independent ?

Core Java

Ans. yes, Java is a class-based and object-oriented programming language. It is a platform-independent language i.e. the compiled code can be run on any java supporting platform. It runs on the logic of “Write once, run anywhere”.

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

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

Search Interview Questions

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