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CognitivZen Technologies Java Developer Interview Questions and Answers
CognitivZen Technologies Java Developer Interview Experiences
2 interviews found
I applied via Approached by Company and was interviewed in Oct 2023. There were 2 interview rounds.
(5 Questions)
- Q1. Difference between Controller and Rest Controller
- Ans.
A Controller is used for handling requests in a web application, while a Rest Controller specifically handles RESTful requests.
A Controller is a component in the MVC architecture that handles user requests and returns a response.
A Rest Controller is a specialized type of Controller that is used for handling RESTful requests.
Rest Controllers are typically used in web services to handle HTTP requests and return JSON or X...
- Q2. Use of application.properties file
- Ans.
The application.properties file is used to store configuration settings for a Java application.
It is a key-value pair file where each line represents a configuration setting.
It is commonly used in Spring Boot applications to configure various properties such as database connection details, server port, logging levels, etc.
The file is typically located in the src/main/resources directory of the project.
Properties can be...
- Q3. Questions on serialization
- Q4. Questions on stream()
- Q5. Questions on collection and collections()
Interview Preparation Tips
Skills evaluated in this interview
I applied via Naukri.com and was interviewed in Aug 2023. There were 2 interview rounds.
(2 Questions)
- Q1. What is Reflection Api
- Ans.
Reflection API is a feature in Java that allows examining and modifying the behavior of classes, methods, and fields at runtime.
Allows inspecting and modifying classes, methods, and fields at runtime
Provides a way to access metadata about classes and their members
Enables dynamic loading of classes and interfaces
Useful for creating generic code, serialization, and testing frameworks
- Q2. What are roles and responsibilities in your project
Interview Preparation Tips
Skills evaluated in this interview
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(2 Questions)
- Q1. What is kafka? how to implement it
- Ans.
Kafka is a distributed streaming platform used for building real-time data pipelines and streaming applications.
Kafka is designed to handle high-throughput, fault-tolerant, and scalable real-time data streams.
It uses topics to categorize data streams, producers publish messages to topics, and consumers subscribe to topics to process messages.
Kafka can be implemented using Kafka APIs in Java, Scala, or other programming...
- Q2. What is Oauth and what is use of it?
- Ans.
OAuth is an open standard for access delegation, commonly used as a way for Internet users to grant websites or applications access to their information on other websites but without giving them the passwords.
OAuth allows users to grant access to their information on one site to another site without sharing their credentials.
It is commonly used for authentication and authorization in APIs.
OAuth uses tokens to access re...
Skills evaluated in this interview
Java Developer Interview Questions & Answers
ANR Software Private Limited
Harsh Singh
posted on 30 Sep 2024
Selected
I applied via Referral and was interviewed in Mar 2024. There were 4 interview rounds.
Normal apti questions test is easy
Opps,java basics, question on array and string as an array
(1 Question)
- Q1. Machine round collection framework pattern design array mid term SIngleton design pattern
(1 Question)
- Q1. More dmbs and sql questions salary
Interview Preparation Tips
Selected
I applied via Naukri.com
(1 Question)
- Q1. Data structures Core java Spring boot Hibernate
Interview Preparation Tips
I applied via Naukri.com and was interviewed in Jun 2022. There were 3 interview rounds.
(2 Questions)
- Q1. Oops, Interfaces, Exception Handling, Collections, SQL, etc
- Q2. Coding Question - Find 2nd largest element in array with least time complexity
- Ans.
Find the 2nd largest element in an array with the least time complexity.
Sort the array in descending order and return the element at index 1.
Initialize two variables to keep track of the largest and second largest elements.
Iterate through the array and update the variables accordingly.
Return the second largest element.
(2 Questions)
- Q1. Coding Question - print * matrix
- Q2. HashMap, HashSet, Spring, Spring Framework, Microservices, etc
(2 Questions)
- Q1. Basic Details, CTC Info
- Q2. Tech Stack, Challenges Faced in career
Interview Preparation Tips
Question were easy to moderate level.
Answered all questions perfectly, still after 3rd round, they rejected me without any reason.
After clearing Technical rounds, They will ask you that you have to work in mandatory Night Shifts.
Skills evaluated in this interview
Software Developer Interview Questions & Answers
Think Future Technologies
Anonymous
posted on 22 Jan 2025
1 hour online test ..
(1 Question)
- Q1. Programming related questions.
(1 Question)
- Q1. DSA round (easy to medium)
(1 Question)
- Q1. Technical+ hr round
(1 Question)
- Q1. Technical questions.
I applied via Campus Placement and was interviewed in Jun 2024. There were 2 interview rounds.
It was ok. I was not able to solve all the questions.
(2 Questions)
- Q1. Remove the last element from a linkedlist
- Q2. Some basic questions on oops dbms and os
I applied via LinkedIn and was interviewed in Aug 2024. There was 1 interview round.
The interviewer asked about javascript basics and DSA questions and some typescript questions
Software Developer Interview Questions & Answers
Nineleaps Technology Solutions
Anonymous
posted on 31 Aug 2024
Selected
I applied via Naukri.com and was interviewed in Mar 2024. There were 2 interview rounds.
Simple question on maths
(2 Questions)
- Q1. Explain OOPS concept
- Ans.
OOPS (Object-Oriented Programming) is a programming paradigm based on the concept of objects, which can contain data and code.
OOPS focuses on creating objects that interact with each other to solve complex problems
Key principles include encapsulation, inheritance, polymorphism, and abstraction
Encapsulation ensures that the internal state of an object is hidden from the outside world
Inheritance allows a class to inherit...
- Q2. Coding array questions
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Software Engineer
16
salaries
|  ₹2.5 L/yr - ₹11.6 L/yr |
|
QA Engineer
12
salaries
| ₹4.1 L/yr - ₹12.5 L/yr |
|
Software Developer
9
salaries
| ₹4 L/yr - ₹13 L/yr |
|
Senior Software Engineer
7
salaries
| ₹14 L/yr - ₹21 L/yr |
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Java Developer
6
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| ₹2.5 L/yr - ₹6 L/yr |
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