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Deqode Java Developer Interview Questions, Process, and Tips
Top Deqode Java Developer Interview Questions and Answers
- Q1. Different annotations used in the springboot @Qualifier @Transactional etc
- Q2. Can you explain the concepts of Object-Oriented Programming (OOP)?
- Q3. what is microservices different pattern?
Deqode Java Developer Interview Experiences
3 interviews found
Pallavi Dhole
I applied via Naukri.com and was interviewed in Dec 2024. There was 1 interview round.
(2 Questions)
- Q1. Can you explain the concepts of Object-Oriented Programming (OOP)?
- Ans.
OOP is a programming paradigm based on the concept of objects, which can contain data in the form of fields and code in the form of procedures.
OOP focuses on creating objects that interact with each other to solve problems.
Key concepts include encapsulation, inheritance, and polymorphism.
Encapsulation involves bundling data and methods that operate on the data into a single unit.
Inheritance allows classes to inherit at...
- Q2. What is the Spring Boot framework?
- Ans.
Spring Boot is a framework for building Java-based applications with minimal configuration.
Spring Boot simplifies the process of creating stand-alone, production-grade Spring-based applications.
It provides a range of features including embedded servers, auto-configuration, and production-ready metrics.
Spring Boot allows developers to quickly set up and run applications with ease, reducing the need for manual configurat...
Anonymous
I applied via Naukri.com and was interviewed in Apr 2024. There was 1 interview round.
(6 Questions)
- Q1. What is microservices different pattern?
- Ans.
Microservices are a software architectural style that structures an application as a collection of loosely coupled services.
Each service is self-contained and can be developed, deployed, and scaled independently.
Communication between services typically occurs over lightweight protocols like HTTP or messaging queues.
Microservices allow for greater flexibility, scalability, and resilience compared to monolithic architect...
- Q2. Communication of microservices
- Ans.
Communication between microservices is typically done through APIs or messaging systems.
Microservices communicate with each other using APIs, such as REST or gRPC.
Message brokers like Kafka or RabbitMQ are commonly used for asynchronous communication between microservices.
Service mesh tools like Istio can help manage communication between microservices by handling service discovery, load balancing, and security.
Event-d...
- Q3. Different annotations used in the springboot @Qualifier @Transactional etc
- Ans.
Annotations like @Qualifier and @Transactional are used in Spring Boot for dependency injection and transaction management.
Annotations like @Qualifier are used to specify which bean to inject when multiple beans of the same type are present.
Annotations like @Transactional are used to mark a method as transactional, allowing for rollback in case of exceptions.
Annotations like @Component, @Service, @Repository are used f...
- Q4. Tell me about the exception handling in the spring boot project
- Q5. Coding question given an array like {1,2,3,4,5,6,7,8,9} we have to rotate the array element in pair of 3 like {3 2 1 6 5 4 9 8 7} in this way
- Q6. Different HTTP methods
- Ans.
HTTP methods are used to indicate the desired action to be performed on a resource.
GET - Retrieve data from a server
POST - Submit data to be processed by a server
PUT - Update a resource on the server
DELETE - Remove a resource from the server
PATCH - Partially update a resource on the server
Interview Preparation Tips
- Microservices
- Spring Boot
Skills evaluated in this interview
I applied via Naukri.com and was interviewed in Apr 2024. There was 1 interview round.
(3 Questions)
- Q1. Static and dynamic poly, aggregator, memory of java ,
- Q2. How asynchronous API create, @qualifier
- Ans.
Asynchronous APIs in Java can be created using @Qualifier annotation to specify which bean to inject when multiple beans of the same type are present.
Use @Qualifier annotation along with @Autowired to specify the bean to be injected.
For example, if there are multiple beans of the same type, use @Qualifier("beanName") to specify which bean to inject.
This helps in resolving ambiguity when multiple beans of the same type
- Q3. Fail-safe and fail-fast
Interview Preparation Tips
Java Developer Jobs at Deqode
Interview questions from similar companies
Sakthivel B
I appeared for an interview in Jun 2017.
Interview Preparation Tips
Experience: They asked java basics,
what we wrote in resume will ask
about project
Tips: please prepare basics things
I applied via Campus Placement and was interviewed before Oct 2020. There was 1 interview round.
Interview Questionnaire
2 Questions
- Q1. What is encapsulation ?
- Ans.
Encapsulation is the process of hiding implementation details and providing access to only necessary information.
Encapsulation helps in achieving data abstraction and information hiding.
It allows for better control over data and prevents unauthorized access.
In Java, encapsulation is achieved through the use of access modifiers such as private, public, and protected.
For example, a class may have private variables that c...
- Q2. What is the meaning of string.
- Ans.
A string is a sequence of characters used to represent text in programming.
Strings are often used for storing and manipulating text data.
In Java, strings are represented by the String class.
Strings can be concatenated using the + operator.
Strings are immutable, meaning they cannot be changed once created.
Examples of string literals include "hello world" and "42".
Interview Preparation Tips
Skills evaluated in this interview
I applied via Naukri.com and was interviewed in Aug 2018. There were 5 interview rounds.
Interview Questionnaire
4 Questions
- Q1. 1.Core java 2.Spring 3. Hibernate 4. Spring Boot 5. SQL 6. AngularJS
- Ans.
The question is asking about the candidate's knowledge in Core Java, Spring, Hibernate, Spring Boot, SQL, and AngularJS.
Core Java is the foundation of Java programming language.
Spring is a popular framework for building Java applications.
Hibernate is an ORM tool used for mapping Java objects to database tables.
Spring Boot is a framework for building microservices.
SQL is a language used for managing relational databases...
- Q2. 1. How to connect 2 DBs from spring boot application
- Ans.
To connect 2 DBs from a Spring Boot application, configure multiple data sources and use JdbcTemplate or EntityManager for each DB.
Configure multiple data sources in the application.properties file
Create separate configuration classes for each data source
Use JdbcTemplate or EntityManager to interact with each DB
Specify the appropriate data source in the repository or service classes
- Q3. 2. Difference between abstract method implementation and default method
- Ans.
Abstract method implementation is mandatory while default method is optional.
Abstract method has no implementation in the abstract class and must be implemented by the subclass.
Default method has a default implementation in the interface and can be overridden by the implementing class.
Abstract method is used to enforce a contract while default method is used to provide a default behavior.
Example: abstract method - publ...
- Q4. 1. About salary and expectation
Interview Preparation Tips
Experience: Technical written test
General Tips: Terrible interview. HR told to give 11% hike with 6% variable and 5% fixed. I kicked off the company.
Skills: Web Technologies, Java Application Development
Duration: 1-4 weeks
Skills evaluated in this interview
I applied via Campus Placement and was interviewed before Jun 2020. There were 7 interview rounds.
Interview Questionnaire
2 Questions
- Q1. What java
- Ans.
Java is a high-level, object-oriented programming language used to develop applications for various platforms.
Java is platform-independent and can run on any platform with a JVM.
It is used for developing web, mobile, desktop, and enterprise applications.
Java has a vast library of pre-built classes and APIs.
It supports multithreading, exception handling, and garbage collection.
Java is widely used in the industry for its...
- Q2. Why java
- Ans.
Java is a popular, versatile, and reliable programming language used for developing a wide range of applications.
Java is platform-independent, making it easy to write code once and run it on multiple platforms.
It has a vast library of pre-built classes and APIs, making development faster and easier.
Java is highly secure and provides built-in features for encryption and authentication.
It is widely used in enterprise app...
Interview Preparation Tips
Skills evaluated in this interview
I appeared for an interview in Feb 2017.
Interview Questionnaire
3 Questions
- Q1. Basic Java questions, OOPs questions, Questions on abstract, Inteface classes, Spring questions, Hibernate questions, Tomcat server questions.
- Q2. Related to Project in you worked, work experience, how many technology you know about
- Q3. Hobbies, aspirations, your family background, what you like dislike, Salary negotiation.
Interview Preparation Tips
Experience: Interview was for 30 minutes duration. They have started with basic concepts like Abstract, Interface etc. Then they moved to core java. Some basic question on core java related to Exceptions, try-catch-finally blocks. Spring MVC basic questions, bean mapping questions. use of tomcat server in eclipse.
Tips: I was lucky at that day.
Interview was more likely of fresher level. I was first in the interview process, interviewer were not ready, so they directly asked few questions to me.
Level of interview was not up to the mark, I prepared for tougher interview, gone thru 500+ questions on core java, spring, hibernate, exceptions and try catch.
0-3 years in java is equivalent to fresher. But you have to be prepared for worst if you really wanted the job.
Before going to the interview, Do hands-on.
Round: Technical + HR Interview
Experience: They call it MR interview.
This interview was on call, after TR, same day. One HR dialed a no. for me.
The person asked about my previous experience in projects, How many technologies I have worked on. Why i am leaving my current employers as I have only 2 years of experience.
How much I am open up to new technologies.
Where i see myself after 5 years.
What are my career aspirations.
How much flexible I am with shifts and work loads.
Tips: Its simple round, You have to be sure why you want this job. give them a very valid reason of your own. Don't copy anybody else's answer. Be confident. If it is on call, speak clearly, maintain pace and voice. They may throw situations and puzzles. be calm, use your mind. Its fine if you don't know about anything. But don't tell directly that you don't know. Try to use all the positive words and phrases.
Round: HR Interview
Experience: They asked some question about myself. about family background. about hobbies and from your resume also, like how many projects you have done.How you are feeling in IT industry. Why this company.
At last salary negotiations. They have started with lowest, 10% hike. and i was expecting 40-50% hike.
I am getting 4 LPA right now, the offered me 5.2LPA at last. I had no options, so i agreed.
But i was very disappointed and tried my best to get more, but they convinced me that it is the best for my role.
Tips: Be confident and look happy, show the joy when you tell about your hobbies. It will lighten up the environment.
Don't insult your previous employer. Defend your current employer if the say something wrong, It a tricky ques
vishali ravichandran
I appeared for an interview in Jun 2017.
Interview Questionnaire
2 Questions
- Q1. The questions are about fully java
- Q2. About myself, and something about java, then the questions about general topic
Interview Preparation Tips
Experience: Most of the questions is new for me but I were manage
Tips: Good preparation
Round: HR Interview
Experience: Most of the questions is new for me but I were manage
Tips: Good preparation
College Name: Avvm spc, thanjavur
Interview Preparation Tips
Experience: I almost sove 130 question
Duration: 2 hours
Total Questions: 150
Round: Group Discussion
Experience: Problem Solving Algorithms
Duration: 3 hours
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Deqode Java Developer Interview Process
based on 3 interviews
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