Sr Java Developer Interview Questions

5,526 sr java developer interview questions shared by candidates

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?

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
avatar

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?
avatar

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?

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