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Software Engineer Java Interview Questions

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4,203 software engineer java interview questions shared by candidates

1. Explain Collection framework in Java? 2. Java 8 Features 3. Sorting array elements ( Based on Comparator & Comparable) 4. OOP Concepts 5. Array List vs Linked List 6. Sort map by value 7. Internal Working of HashMap 8. Serialization 9. map() vs flatmap() 10. Add elements of List of List using Steam API 11. IOC & Depenedncy Injection 12. What is profiles and actuators in Spring Boot? 13. @Controller vs @RestController 14. @Bean vs @Component 15. Explain Auto configuration and Dependency management feature in Spring Boot 16. Get nth highest salary from employee table
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Senior Software Engineer - Java

Interviewed at Hughes Systique

4★
May 9, 2023

1. Explain Collection framework in Java? 2. Java 8 Features 3. Sorting array elements ( Based on Comparator & Comparable) 4. OOP Concepts 5. Array List vs Linked List 6. Sort map by value 7. Internal Working of HashMap 8. Serialization 9. map() vs flatmap() 10. Add elements of List of List using Steam API 11. IOC & Depenedncy Injection 12. What is profiles and actuators in Spring Boot? 13. @Controller vs @RestController 14. @Bean vs @Component 15. Explain Auto configuration and Dependency management feature in Spring Boot 16. Get nth highest salary from employee table

Se concentro en estructura de datos un caso pequeño de prueba se abordaron temas de herramientas y plataformas las apis servidores web y de aplicaciones que he utilizado herramientas de integración continua manejo de progreso del desarrollo de un proyecto el uso de scrum en el día a día
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Software Engineer - Java Developer

Interviewed at EPAM Systems

4★
Sep 11, 2025

Se concentro en estructura de datos un caso pequeño de prueba se abordaron temas de herramientas y plataformas las apis servidores web y de aplicaciones que he utilizado herramientas de integración continua manejo de progreso del desarrollo de un proyecto el uso de scrum en el día a día

1 round Medium: Theory + coding. [stream concept , Maven based qns like maven lifecycle, scope of spring, design pattern, Touch all collection concept like [Hashmap, ConcurrentMap, LinkedHashmap, Vector, List]], Stream coding part [count occerance of word]. 2 nd Round [More depth of java and springboot and also javascript as I mention in resume], Memory Management, exception Handling, try with multiple catch block, Transaction, Isolation, propagation. Coding I am not remember because I am not even understood the qns well and due to that I was blank in interview and mostly that I rejected.
avatar

Software Engineer - Java Developer

Interviewed at EPAM Systems

4★
Dec 17, 2025

1 round Medium: Theory + coding. [stream concept , Maven based qns like maven lifecycle, scope of spring, design pattern, Touch all collection concept like [Hashmap, ConcurrentMap, LinkedHashmap, Vector, List]], Stream coding part [count occerance of word]. 2 nd Round [More depth of java and springboot and also javascript as I mention in resume], Memory Management, exception Handling, try with multiple catch block, Transaction, Isolation, propagation. Coding I am not remember because I am not even understood the qns well and due to that I was blank in interview and mostly that I rejected.

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