Tech Data India Java Developer Interview: Rounds, Questions and Preparation

What the job involves

Java Developers in Indian IT services work on enterprise applications for clients across domains like BFSI, retail, and telecom, often using Java, Spring, and SQL. Freshers typically start with bug fixes, module development, and unit testing under a senior developer's guidance. The role involves understanding client requirements, writing clean code, and coordinating with testing and support teams.

Role and Technical Knowledge

1. 1

   Explain the difference between JDK, JRE, and JVM.

   Cover definitions, platform independence, and how they relate to running Java applications.

2. 2

   What are the main principles of OOP and how do you apply them in Java?

   Mention encapsulation, inheritance, polymorphism, and abstraction with a short code example.

3. 3

   How does Spring Boot simplify Java web development?

   Discuss auto-configuration, embedded servers, and starter dependencies.

4. 4

   Write a SQL query to find the second highest salary from an Employee table.

   Use a subquery with MAX or a window function like DENSE_RANK, and explain the logic.

Practical Scenarios

1. 5

   You are asked to fix a bug in an existing Java module. How do you approach it?

   Describe reading logs, reproducing the issue, debugging, writing a test, and verifying the fix.

2. 6

   How would you design a simple REST API for a student management system?

   Outline endpoints, HTTP methods, request/response formats, and basic validation.

3. 7

   Your application is running slow due to database calls. What steps do you take?

   Talk about identifying slow queries, indexing, connection pooling, and caching.

4. 8

   How do you handle exceptions in a Spring Boot application?

   Mention try-catch, @ExceptionHandler, and returning proper HTTP status codes.

Project and Internship Experience

1. 9

   Walk me through a Java project you built during college.

   Explain the problem, your role, technologies used, challenges, and what you learned.

2. 10

   What was the most difficult technical issue you faced in your project and how did you solve it?

   Show problem-solving steps, resources used, and the outcome.

3. 11

   How did you ensure code quality in your project?

   Discuss code reviews, unit tests, naming conventions, and version control.

4. 12

   If you had to add a new feature to your project now, what would it be and why?

   Suggest a realistic enhancement and explain its business or technical value.

Behavioural and HR Questions

1. 13

   Why do you want to work as a Java Developer in an IT services company?

   Connect your interest in coding with the variety of client projects and learning opportunities.

2. 14

   Are you comfortable working on legacy code or a technology you have not used before?

   Show adaptability and willingness to learn, with an example of picking up a new skill.

3. 15

   Describe a time you worked in a team to meet a deadline.

   Use the STAR method and highlight communication, task division, and result.

4. 16

   Where do you see yourself in three years?

   Focus on growing into a reliable developer, deepening technical skills, and contributing to projects.