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American InfoSource Senior Java Developer Interview Questions and Answers

Updated 18 Jun 2022

American InfoSource Senior Java Developer Interview Experiences

1 interview found

I applied via Naukri.com and was interviewed in May 2022. There was 1 interview round.

Round 1 - Technical 

(2 Questions)

  • Q1. What is Hashmap and concurrent hashmap
  • Ans. 

    Hashmap is a data structure that stores key-value pairs. Concurrent Hashmap is a thread-safe version of Hashmap.

    • Hashmap is implemented using an array of linked lists.

    • It allows null values and only one null key.

    • Concurrent Hashmap allows multiple threads to access and modify the map concurrently.

    • It achieves thread-safety by dividing the map into segments and locking only the affected segments during modification.

  • Answered by AI
  • Q2. Annotation in spring boot repository and Service
  • Ans. 

    Annotations in Spring Boot repository and service

    • Annotations are used to provide metadata to the code

    • @Repository annotation is used to indicate a DAO component

    • @Service annotation is used to indicate a service component

    • Both annotations are used in Spring Boot to enable dependency injection

  • Answered by AI

Interview Preparation Tips

Interview preparation tips for other job seekers - Collection framework must revise.Spring boot developer annotation revision.

Skills evaluated in this interview

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Can speak English, can’t deliver in interviews
I feel like I can't speak fluently during interviews. I do know english well and use it daily to communicate, but the moment I'm in an interview, I just get stuck. since it's not my first language, I struggle to express what I actually feel. I know the answer in my head, but I just can’t deliver it properly at that moment. Please guide me
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Interview questions from similar companies

I appeared for an interview before Jun 2021.

Round 1 - Coding Test 

Had DSA and aptitude questions

Round 2 - Technical 

(1 Question)

  • Q1. DSA a questions, Database Questions
Round 3 - HR 

(1 Question)

  • Q1. 5 min question and answers about company

Interview Preparation Tips

Interview preparation tips for other job seekers - Prepare DSA and database management

Senior Java Developer Interview Questions Asked at Other Companies

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I applied via Referral and was interviewed in Sep 2021. There were 6 interview rounds.

Interview Questionnaire 

1 Question

  • Q1. Tell us about Reliability?
  • Ans. 

    Reliability refers to the ability of a system or component to perform its required functions under stated conditions for a specified period of time.

    • Reliability is a measure of how often a system or component fails and how quickly it can be restored to normal operation.

    • It is important to design systems with redundancy and failover mechanisms to ensure high reliability.

    • Reliability can be improved through regular maintena...

  • Answered by AI

Interview Preparation Tips

Interview preparation tips for other job seekers - I have got selected by Interviewer Rajib Das.

I applied via LinkedIn and was interviewed in Jun 2021. There was 1 interview round.

Interview Questionnaire 

2 Questions

  • Q1. Basics of Angular
  • Q2. Basics of js

Interview Preparation Tips

Interview preparation tips for other job seekers - Freshen up basics on skills.

I appeared for an interview in Nov 2020.

Round 1 - Coding Test 

(1 Question)

Round duration - 2 hours
Round difficulty - Medium

In the 1st round 
Aptitude
Reasoning
English
Automata fix( code debug) 
Timing in morning
Environment is good
Interviewer was very cool and interactive

  • Q1. 

    Encode the Message Problem Statement

    Given a text message, your task is to return the Run-length Encoding of the given message.

    Run-length encoding is a fast and simple method of encoding strings, repres...

  • Ans. 

    Implement a function to encode a text message using run-length encoding.

    • Iterate through the message and count consecutive characters

    • Append the character and its count to the encoded message

    • Handle edge cases like single characters or empty message

  • Answered by AI
Round 2 - Video Call 

(1 Question)

Round duration - 30 minutes
Round difficulty - Medium

This is interview round 
Ques from basic electronics
C language

  • Q1. 

    Print Name and Age Problem Statement

    Create a class named Person with a string variable 'name' and an integer variable 'age', such that these variables are not accessible outside the class. Implement a me...

  • Ans. 

    Create a class Person with private variables name and age, and methods to set and get their values.

    • Create a class Person with private variables 'name' and 'age'.

    • Implement a method setValue to set the variables' values.

    • Implement a method getValue to print the variables' values.

    • Ensure the name is a non-empty string and the age is a non-negative integer.

    • Encapsulate the data and provide a clear interface for setting and ge...

  • Answered by AI

Interview Preparation Tips

Eligibility criteriaAbove 6 cgpaCognizant interview preparation:Topics to prepare for the interview - Electronics basics, C language , Data structure, OOPS, ProjectsTime required to prepare for the interview - 2 monthsInterview preparation tips for other job seekers

Tip 1 : Do aptitude from indiabix. Go through your basics. At least one language u know. Learn about your branch basics. Know concept of data structure and oops. 
Tip 2 : prepare your final project well. 

Application resume tips for other job seekers

Tip 1 : the skills you know very well mention in resume
Tip 2 : mention project in resume

Final outcome of the interviewSelected

Skills evaluated in this interview

I applied via Naukri.com and was interviewed in Feb 2022. There were 2 interview rounds.

Round 1 - Resume Shortlist 
Pro Tip by AmbitionBox:
Keep your resume crisp and to the point. A recruiter looks at your resume for an average of 6 seconds, make sure to leave the best impression.
View all tips
Round 2 - Coding Test 

C , java

Interview Preparation Tips

Interview preparation tips for other job seekers - Selection is based on skills and also believe
Round 1 - Aptitude Test 

HTML

Round 2 - Aptitude Test 

Aptitude and resume shortlist and HTML

Round 3 - Resume Shortlist 
Pro Tip by AmbitionBox:
Keep your resume crisp and to the point. A recruiter looks at your resume for an average of 6 seconds, make sure to leave the best impression.
View all tips

Interview Preparation Tips

Interview preparation tips for other job seekers - No tips
Are these interview questions helpful?

I applied via Naukri.com and was interviewed before May 2021. There were 3 interview rounds.

Round 1 - Technical 

(1 Question)

  • Q1. Java Collection, OOPS, Seralization
Round 2 - Technical 

(1 Question)

  • Q1. Java OOPS, Collection, threading, SQL
Round 3 - HR 

(1 Question)

  • Q1. Nothing specific, Salary Negotiations.

Interview Preparation Tips

Interview preparation tips for other job seekers - overall good experience and process was quick

Interview Questionnaire 

3 Questions

  • Q1. Difference between inner join and outer join
  • Ans. 

    Inner join returns only matching rows from both tables while outer join returns all rows from one table and matching rows from the other.

    • Inner join is used to combine data from two tables based on a common column.

    • Outer join is used to combine data from two tables where one table may not have matching rows in the other.

    • There are three types of outer join: left outer join, right outer join, and full outer join.

    • Left outer...

  • Answered by AI
  • Q2. What is abstract class
  • Ans. 

    An abstract class is a class that cannot be instantiated and is used as a base class for other classes.

    • An abstract class can have abstract and non-abstract methods.

    • Abstract methods have no implementation and must be implemented by the derived class.

    • An abstract class can have constructors and fields.

    • An abstract class can be used to define a common interface for a group of related classes.

    • Example: Animal is an abstract c...

  • Answered by AI
  • Q3. What is normalization and difference between 3NF and BCNF
  • Ans. 

    Normalization is a process of organizing data in a database to reduce redundancy and dependency.

    • Normalization is used to eliminate data redundancy and dependency.

    • 3NF (Third Normal Form) eliminates transitive dependencies while BCNF (Boyce-Codd Normal Form) eliminates partial dependencies.

    • 3NF is a subset of BCNF.

    • Normalization helps in improving data consistency and integrity.

    • Normalization can also improve database perfo...

  • Answered by AI

Skills evaluated in this interview

I applied via Naukri.com and was interviewed before Sep 2019. There were 6 interview rounds.

Interview Questionnaire 

3 Questions

  • Q1. IQ Test
  • Q2. Machine Test
  • Q3. Face To Face

Interview Preparation Tips

Interview preparation tips for other job seekers - basically there are 3 rounds:-
1. IQ Test
2. Machine Test
3. Face to Face

IQ Test is not so tough but prepare well Machine Test
Machine Test Question are like :-
Q.1 - We declare a variable in C++ like "is_this_a_variable" and in Java like "IsThisAVariable". There is underscore in between every word and first alphabet of every word is in lowercase in C++ and in Java first alphabet is in capital without underscore. Create a program in which if user input a string in a C++ variable format it will convert the input in java variable format.

Q2. Count the frequency of a string.
user input string - pqhphi
output-
p - 2
q - 1
h - 2
i - 1

Be strong in algorithms and data structure.

American InfoSource Interview FAQs

How many rounds are there in American InfoSource Senior Java Developer interview?
American InfoSource interview process usually has 1 rounds. The most common rounds in the American InfoSource interview process are Technical.
How to prepare for American InfoSource Senior Java Developer interview?
Go through your CV in detail and study all the technologies mentioned in your CV. Prepare at least two technologies or languages in depth if you are appearing for a technical interview at American InfoSource. The most common topics and skills that interviewers at American InfoSource expect are Hibernate and Spring Boot.
What are the top questions asked in American InfoSource Senior Java Developer interview?

Some of the top questions asked at the American InfoSource Senior Java Developer interview -

  1. What is Hashmap and concurrent hash...read more
  2. Annotation in spring boot repository and Serv...read more

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