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Senior Java Developer Interview Questions

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5,296 senior java developer interview questions shared by candidates

1. How have you used Docker in your previous organization? 2. Difference between virtualization and containerization? 3. If you wish to use a base image and make modifications/personalize it, how do you do that? 4. Spring Boot framework 5. Have you used Java Microservices and Rest API in the previous organization? Explain how. 6. What challenges did you face in code execution? 7. Describe some challenges faced during designing code modules. 8. Give reasons why you would choose Factory over Singleton design pattern. 9. Hadoop basics 10. Multi-threading 11. Debugging in Java Microservices 12. Debugging solution in Spring framework 13. Deadlocks 14. Parallel computing in Java
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Senior Java Developer

Interviewed at Publicis Sapient

3.4★
Aug 9, 2021

1. How have you used Docker in your previous organization? 2. Difference between virtualization and containerization? 3. If you wish to use a base image and make modifications/personalize it, how do you do that? 4. Spring Boot framework 5. Have you used Java Microservices and Rest API in the previous organization? Explain how. 6. What challenges did you face in code execution? 7. Describe some challenges faced during designing code modules. 8. Give reasons why you would choose Factory over Singleton design pattern. 9. Hadoop basics 10. Multi-threading 11. Debugging in Java Microservices 12. Debugging solution in Spring framework 13. Deadlocks 14. Parallel computing in Java

1. Which design patterns have you used in your past projects? 2. Why do you want to join Publicis Sapient? 3. Write a program to implement the producer-consumer problem using BlockingQueue 4. JVM internals 5. GC tuning practices 6. Advanced questions on data structure and algorithms 7. What is Dependency Injection pattern?
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Senior Java Developer

Interviewed at Publicis Sapient

3.4★
Aug 23, 2021

1. Which design patterns have you used in your past projects? 2. Why do you want to join Publicis Sapient? 3. Write a program to implement the producer-consumer problem using BlockingQueue 4. JVM internals 5. GC tuning practices 6. Advanced questions on data structure and algorithms 7. What is Dependency Injection pattern?

1. Core Java concepts in detail - almost all topics were touched upon 2. A coding assignment based on a case study 3. Data structure and algorithm - I wrote an algorithm and calculated efficiency for a million data records. 4. How will you manage challenging situations like a conflict of interest at the workplace?
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Senior Java Developer

Interviewed at Publicis Sapient

3.4★
Sep 13, 2021

1. Core Java concepts in detail - almost all topics were touched upon 2. A coding assignment based on a case study 3. Data structure and algorithm - I wrote an algorithm and calculated efficiency for a million data records. 4. How will you manage challenging situations like a conflict of interest at the workplace?

a. Tell me about the last time something significant did not go according to plan at work. What was your role? What was the outcome? b. It is midnight one year from now. What are you doing? c. Garbage collection and memory d. Data structures and algorithms e. Multi-threading and parallel processing f. How to control sessions with Spring security?
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Senior Java Developer

Interviewed at Publicis Sapient

3.4★
Sep 7, 2021

a. Tell me about the last time something significant did not go according to plan at work. What was your role? What was the outcome? b. It is midnight one year from now. What are you doing? c. Garbage collection and memory d. Data structures and algorithms e. Multi-threading and parallel processing f. How to control sessions with Spring security?

1. OOPs concepts and classes 2. Methods and functions 3. Design patterns and their usage 4. Have you worked on Singleton design? What are its pros and cons? 5. Strings, Java templates, error handling and exceptions 6. Multithreading and parallel computing
avatar

Senior Java Developer

Interviewed at Publicis Sapient

3.4★
Sep 9, 2021

1. OOPs concepts and classes 2. Methods and functions 3. Design patterns and their usage 4. Have you worked on Singleton design? What are its pros and cons? 5. Strings, Java templates, error handling and exceptions 6. Multithreading and parallel computing

The basic question of almost every interview- walk me through your resume and your previous work. Other questions were based on topics such as: runtime and compile-time polymorphism, OOPS concepts, exception hierarchy, shallow and deep cloning, and multi-threading. The other question was to guess the output of the program.
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Senior Java/J2EE Developer

Interviewed at Publicis Sapient

3.4★
Jun 7, 2021

The basic question of almost every interview- walk me through your resume and your previous work. Other questions were based on topics such as: runtime and compile-time polymorphism, OOPS concepts, exception hierarchy, shallow and deep cloning, and multi-threading. The other question was to guess the output of the program.

Front-end and back-end questions were asked. Java Servlets, Concurrent API, Java APIs in general, how to handle deadlock and multithreading. Questions about Service-oriented Architecture (SOA), Microservices and JAX-WS with XML. What is the difference between RESTful and SOAP-based web services in Java?
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Senior Full-stack Java Developer

Interviewed at Publicis Sapient

3.4★
Jun 16, 2021

Front-end and back-end questions were asked. Java Servlets, Concurrent API, Java APIs in general, how to handle deadlock and multithreading. Questions about Service-oriented Architecture (SOA), Microservices and JAX-WS with XML. What is the difference between RESTful and SOAP-based web services in Java?

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