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Cogencis Information Services Java Developer Interview Questions and Answers

Updated 5 Oct 2021

Cogencis Information Services Java Developer Interview Experiences

1 interview found

I applied via Recruitment Consultant and was interviewed in Sep 2021. There were 3 interview rounds.

Interview Questionnaire 

2 Questions

  • Q1. Basic core java
  • Q2. Spring boot

Interview Preparation Tips

Interview preparation tips for other job seekers - moderate knowlege is required

Interview questions from similar companies

Interview Questionnaire 

4 Questions

  • Q1. Total 3 rounds are there.
  • Q2. 1 . Apps and tech..m choose the best
  • Q3. 2. Technical. Asking basic questions (oops, multithreading, basic JDBC) and 1 program (array or collection)
  • Q4. 3. Basic questions about you. And some technical questions. Its pure for check communication

Interview Questionnaire 

3 Questions

  • Q1. 1.What is the purpose of a default constructor?
  • Ans. 

    The purpose of a default constructor is to initialize the object's instance variables with default values.

    • A default constructor is automatically provided by the compiler if no constructor is defined in the class.

    • It is used to create an object of the class with default values for its instance variables.

    • Default constructors are useful when we want to create an object without passing any initial values.

  • Answered by AI
  • Q2. 2.What are the differences between the constructors and methods?
  • Ans. 

    Constructors are special methods used to initialize objects, while methods are regular functions that perform specific tasks.

    • Constructors have the same name as the class, while methods have unique names.

    • Constructors are called automatically when an object is created, while methods need to be called explicitly.

    • Constructors do not have a return type, while methods have a return type.

    • Constructors are used to set initial v...

  • Answered by AI
  • Q3. 3.Why is the main method static?
  • Ans. 

    The main method is static because it needs to be called by the Java Virtual Machine (JVM) without creating an instance of the class.

    • Static methods can be called directly using the class name, without creating an object of the class.

    • The main method is the entry point of a Java program, and it needs to be called by the JVM to start the execution.

    • If the main method were not static, we would need to create an object of the...

  • Answered by AI

Skills evaluated in this interview

I appeared for an interview before Mar 2021.

Round 1 - Coding Test 

Round duration - 30 minutes
Round difficulty - Medium

This was a MCQ round. 30 ques in 30 mins consisting of difficult quantitative aptitude questions were to be solved.

Round 2 - Coding Test 

(2 Questions)

Round duration - 60 minutes
Round difficulty - Medium

In this test round, 2 coding questions were given. Either write the code or pseudo code

  • Q1. 

    N Queens Problem

    Given an integer N, find all possible placements of N queens on an N x N chessboard such that no two queens threaten each other.

    Explanation:

    A queen can attack another queen if they ar...

  • Ans. 

    The N Queens Problem involves finding all possible placements of N queens on an N x N chessboard without threatening each other.

    • Use backtracking algorithm to explore all possible configurations.

    • Keep track of rows, columns, and diagonals to ensure queens do not threaten each other.

    • Generate all valid configurations and print them out.

  • Answered by AI
  • Q2. 

    Sort 0 1 2 Problem Statement

    Given an integer array arr of size 'N' containing only 0s, 1s, and 2s, write an algorithm to sort the array.

    Input:

    The first line contains an integer 'T' representing the n...
  • Ans. 

    Sort an array of 0s, 1s, and 2s in linear time complexity.

    • Use three pointers to keep track of 0s, 1s, and 2s while traversing the array.

    • Swap elements based on the values encountered to sort the array in-place.

    • Time complexity should be O(N) and space complexity should be O(1).

  • Answered by AI
Round 3 - Face to Face 

(2 Questions)

Round duration - 60 minutes
Round difficulty - Easy

This was a technical round with questions on DSA.

  • Q1. 

    Reverse Words in a String: Problem Statement

    You are given a string of length N. Your task is to reverse the string word by word. The input may contain multiple spaces between words and may have leading o...

  • Ans. 

    Reverse words in a string while handling leading, trailing, and multiple spaces.

    • Split the input string by spaces to get individual words

    • Reverse the order of the words

    • Join the reversed words with a single space in between

  • Answered by AI
  • Q2. 

    Circular Linked List Detection

    You are provided with the head of a linked list containing integers. Your task is to determine if the linked list is circular.

    Note:
    • A linked list is considered circula...
  • Ans. 

    Detect if a given linked list is circular by checking if it forms a closed loop.

    • Traverse the linked list using two pointers, one moving at double the speed of the other.

    • If the two pointers meet at any point, the linked list is circular.

    • If the faster pointer reaches the end of the list (NULL), the linked list is not circular.

  • Answered by AI
Round 4 - HR 

Round duration - 30 minutes
Round difficulty - Easy

HR round with typical behavioral problems.

Interview Preparation Tips

Eligibility criteriaAbove 7 CGPAMAQ Software interview preparation:Topics to prepare for the interview - Data Structures, Algorithms, System Design, Aptitude, OOPSTime required to prepare for the interview - 5 monthsInterview preparation tips for other job seekers

Tip 1 : Must do Previously asked Interview as well as Online Test Questions.
Tip 2 : Go through all the previous interview experiences from Codestudio and Leetcode.
Tip 3 : Do at-least 2 good projects and you must know every bit of them.

Application resume tips for other job seekers

Tip 1 : Have at-least 2 good projects explained in short with all important points covered.
Tip 2 : Every skill must be mentioned.
Tip 3 : Focus on skills, projects and experiences more.

Final outcome of the interviewSelected

Skills evaluated in this interview

I applied via Walk-in and was interviewed before Mar 2020. There were 5 interview rounds.

Interview Questionnaire 

1 Question

  • Q1. Oops, Collection interface , data structures basics, SQL, Singleton class

Interview Preparation Tips

Interview preparation tips for other job seekers - There were 6 rounds total all contains mostly oops, array, collection, SQL and ds.. But be ready to work very hard and fast they will expect lot of work from you
Interview experience
4
Good
Difficulty level
Moderate
Process Duration
Less than 2 weeks
Result
No response

I applied via Approached by Company and was interviewed in Mar 2024. There were 2 interview rounds.

Round 1 - Coding Test 

Code review to find bugs

Round 2 - Technical 

(1 Question)

  • Q1. State the features of interface Spring boot annotations Microservice communication table index
  • Ans. 

    Interface features include abstraction, multiple inheritance, and contract enforcement.

    • Abstraction: Interfaces allow for the definition of methods without implementation, providing a blueprint for classes to follow.

    • Multiple Inheritance: Java interfaces support multiple inheritance, allowing a class to implement multiple interfaces.

    • Contract Enforcement: Interfaces define a contract that implementing classes must adhere

  • Answered by AI

Skills evaluated in this interview

Interview experience
4
Good
Difficulty level
-
Process Duration
-
Result
-
Round 1 - Technical 

(2 Questions)

  • Q1. Core Java related Questions
  • Q2. SQL Databases related Questions
Round 2 - Technical 

(1 Question)

  • Q1. Client side interview core Java, SQL, Spring Boot, hibernate

Interview Preparation Tips

Interview preparation tips for other job seekers - Core Java, spring boot, project, SQL preparation
Interview experience
5
Excellent
Difficulty level
Easy
Process Duration
Less than 2 weeks
Result
Selected Selected

I applied via Naukri.com and was interviewed in Sep 2024. There were 3 interview rounds.

Round 1 - One-on-one 

(2 Questions)

  • Q1. Oops concept asked
  • Q2. Springboot annotations
Round 2 - One-on-one 

(2 Questions)

  • Q1. Project details simply
  • Q2. Springboot related
Round 3 - HR 

(2 Questions)

  • Q1. Easy about salary
  • Q2. Details about asked

Interview Preparation Tips

Interview preparation tips for other job seekers - Basic concept and real time example is the only thing achieve to clear interview
Interview experience
4
Good
Difficulty level
Moderate
Process Duration
Less than 2 weeks
Result
Selected Selected

I applied via Naukri.com and was interviewed in May 2024. There was 1 interview round.

Round 1 - Technical 

(2 Questions)

  • Q1. Ask about project,springboot
  • Q2. What is jira and uses

Interview Preparation Tips

Topics to prepare for Softenger Java Developer interview:
  • Java
  • Spring Boot
Interview experience
5
Excellent
Difficulty level
Easy
Process Duration
Less than 2 weeks
Result
-

I applied via Recruitment Consulltant and was interviewed in Jul 2023. There were 3 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 

Arrays, basics. easy, some important topics in python and sql

Round 3 - Technical 

(2 Questions)

  • Q1. SQL basics question learned in online or self
  • Q2. Joins, groupby, clause, projection, having

Interview Preparation Tips

Interview preparation tips for other job seekers - do well

Cogencis Information Services Interview FAQs

What are the top questions asked in Cogencis Information Services Java Developer interview?

Some of the top questions asked at the Cogencis Information Services Java Developer interview -

  1. Spring b...read more
  2. Basic core j...read more

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