Java Software Engineer Interview Questions

4,185 java software engineer interview questions shared by candidates

In the pen-and-paper round, all candidates were given the same problem statement. I am not entirely certain if this was the exact wording, but the core requirement was to design a system using abstraction and inheritance principles. Specifically, I had to create an abstract class named Hospital, define abstract methods such as getDescription(), and declare the required variables. Then, I needed to create a Person class with a string variable name, extend it into a Patient class, and override the getDescription() method. Additionally, I was asked to implement simple logic such as retrieving the next patient based on priority. The focus of the question was mainly on understanding abstraction, method overriding, class hierarchy, and applying basic low-level design concepts rather than solving a pure data structures problem.
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Junior Java Software Developer

Interviewed at EPAM Systems

4
Feb 19, 2026

In the pen-and-paper round, all candidates were given the same problem statement. I am not entirely certain if this was the exact wording, but the core requirement was to design a system using abstraction and inheritance principles. Specifically, I had to create an abstract class named Hospital, define abstract methods such as getDescription(), and declare the required variables. Then, I needed to create a Person class with a string variable name, extend it into a Patient class, and override the getDescription() method. Additionally, I was asked to implement simple logic such as retrieving the next patient based on priority. The focus of the question was mainly on understanding abstraction, method overriding, class hierarchy, and applying basic low-level design concepts rather than solving a pure data structures problem.

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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