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Data Economy Java Developer Interview Questions and Answers

Updated 9 Jun 2024

Data Economy Java Developer Interview Experiences

3 interviews found

Interview experience
5
Excellent
Difficulty level
Moderate
Process Duration
Less than 2 weeks
Result
Selected Selected

I applied via Recruitment Consulltant and was interviewed in Apr 2024. There were 2 interview rounds.

Round 1 - Technical 

(1 Question)

  • Q1. Oops concept, comparator vs comparable , design principles. TDD , Circuit breaker design , integration testing , diff between hibernate and jpa , springboot annotations , restApi basics .
Round 2 - HR 

(1 Question)

  • Q1. Basic hr questions

Interview Preparation Tips

Interview preparation tips for other job seekers - keep good hold on your project internal knowledge plus strong knowledge of core java.

Java Developer Interview Questions & Answers

user image Smriti Gupta

posted on 9 Jun 2024

Interview experience
5
Excellent
Difficulty level
-
Process Duration
-
Result
-
Round 1 - Technical 

(2 Questions)

  • Q1. Java 8 new features
  • Ans. 

    Java 8 introduced several new features including lambda expressions, functional interfaces, streams, and default methods.

    • Lambda expressions allow you to pass functionality as an argument to a method.

    • Functional interfaces have a single abstract method and can be used with lambda expressions.

    • Streams provide a way to process collections of objects in a functional style.

    • Default methods allow interfaces to have method imple...

  • Answered by AI
  • Q2. Spring basics and annotations
Round 2 - HR 

(2 Questions)

  • Q1. Salary discussion
  • Q2. Lwd discussion and joining

Skills evaluated in this interview

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Interview experience
5
Excellent
Difficulty level
Moderate
Process Duration
Less than 2 weeks
Result
Not Selected

I applied via Referral and was interviewed in Oct 2023. There were 5 interview rounds.

Round 1 - Resume Shortlist 
Pro Tip by AmbitionBox:
Properly align and format text in your resume. A recruiter will have to spend more time reading poorly aligned text, leading to high chances of rejection.
View all Resume tips
Round 2 - Aptitude Test 

Some resoning questions and time and work , percentage, numbering, relationship que

Round 3 - Technical 

(2 Questions)

  • Q1. Ask basics questions of SQL and java
  • Q2. Oop concepts Collection in java
  • Ans. 

    OOP concepts in Java involve encapsulation, inheritance, polymorphism, and abstraction. Collections in Java are used to store and manipulate groups of objects.

    • Encapsulation: Bundling data and methods that operate on the data into a single unit (class).

    • Inheritance: Allows a class to inherit properties and behavior from another class.

    • Polymorphism: Ability to present the same interface for different data types.

    • Abstraction...

  • Answered by AI
Round 4 - Assignment 

Mcq of java launguage

Round 5 - HR 

(3 Questions)

  • Q1. Tell me about yourself Where do you see yourself in 5 years
  • Q2. Strength and weekness
  • Q3. Short term goal and long term goal

Interview Preparation Tips

Interview preparation tips for other job seekers - Be confidence study on apptitude and java

Skills evaluated in this interview

Java Developer Jobs at Data Economy

View all

Interview questions from similar companies

I was interviewed in Jul 2017.

Interview Questionnaire 

6 Questions

  • Q1. What is autoboxing and unboxing
  • Ans. 

    Autoboxing is the automatic conversion of primitive data types to their corresponding object wrapper classes.

    • Autoboxing is useful when working with collections that require objects instead of primitives.

    • Example: int i = 5; Integer j = i; //autoboxing

    • Unboxing is the opposite of autoboxing, where an object of a wrapper class is converted back to its corresponding primitive type.

    • Example: Integer j = 5; int i = j; //unboxi

  • Answered by AI
  • Q2. What is typecasting UP AND DOWN
  • Ans. 

    Typecasting up and down refers to converting a variable of one data type to another data type of higher or lower precision.

    • Typecasting up involves converting a variable of lower precision to a variable of higher precision, such as converting an int to a double.

    • Typecasting down involves converting a variable of higher precision to a variable of lower precision, such as converting a double to an int.

    • Typecasting can resul...

  • Answered by AI
  • Q3. How do you iterate map
  • Ans. 

    To iterate a map in Java, use a for-each loop or an iterator.

    • Use the entrySet() method to get a set of key-value pairs

    • For-each loop: for(Map.Entry entry : map.entrySet())

    • Iterator: Iterator> iterator = map.entrySet().iterator();

    • Use hasNext() and next() methods to iterate through the map

  • Answered by AI
  • Q4. Types of synchronisation in java
  • Ans. 

    Types of synchronization in Java

    • Synchronized methods

    • Synchronized statements

    • ReentrantLock

    • Semaphore

    • CountDownLatch

  • Answered by AI
  • Q5. Access modifiers in method overriding
  • Ans. 

    Access modifiers in method overriding

    • Access modifiers in the overriding method cannot be more restrictive than the overridden method

    • The access modifier can be less restrictive or the same as the overridden method

    • Private methods cannot be overridden

    • Examples: public method can be overridden by public or protected method, but not by private method

  • Answered by AI
  • Q6. Covarient return type

Skills evaluated in this interview

I was interviewed in Jun 2017.

Interview Preparation Tips

Round: Technical Interview
Experience: They asked java basics,
what we wrote in resume will ask
about project
Tips: please prepare basics things

Interview Questionnaire 

1 Question

  • Q1. Abstraction

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...

  • Answered by AI
  • 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

  • Answered by AI
  • 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...

  • Answered by AI
  • Q4. 1. About salary and expectation

Interview Preparation Tips

Round: Test
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

Interview Preparation Tips

Round: Test
Experience: I almost sove 130 question
Duration: 2 hours
Total Questions: 150

Round: Group Discussion
Experience: Problem Solving Algorithms
Duration: 3 hours

Java Developer Interview Questions & Answers

TCS user image vishali ravichandran

posted on 13 Jul 2017

I was interviewed 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

Round: Technical Interview
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

I was interviewed 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

Round: Technical Interview
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

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Data Economy Interview FAQs

How many rounds are there in Data Economy Java Developer interview?
Data Economy interview process usually has 3 rounds. The most common rounds in the Data Economy interview process are Technical, HR and Resume Shortlist.
How to prepare for Data Economy 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 Data Economy. The most common topics and skills that interviewers at Data Economy expect are Hibernate, Digital Marketing, Java, Spring Boot and JDBC.
What are the top questions asked in Data Economy Java Developer interview?

Some of the top questions asked at the Data Economy Java Developer interview -

  1. Oop concepts Collection in j...read more
  2. Java 8 new featu...read more
  3. oops concept, comparator vs comparable , design principles. TDD , Circuit break...read more

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Data Economy Java Developer Interview Process

based on 3 interviews

Interview experience

5
  
Excellent
View more
Java Developer

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2-7 Yrs

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