Java Software Developer Interview Questions

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

Software Engineer - Java Developer

Interviewed at Deloitte

3.8★

Mar 5, 2021

Code to sort an array without using any predefined class and methods.

Java Software Developer

Interviewed at KRG Technologies

4.6★

Dec 10, 2020

Spring annotations

Java Software Developer

Interviewed at KRG Technologies

4.6★

Dec 10, 2020

Oops questions

Software Engineer - Java Developer

Interviewed at Deloitte

3.8★

May 30, 2025

Problem-solving (HackerRank / Codility style) String manipulations, Arrays, Collections, Sorting, Searching Algorithm thinking: time/space complexity

Software Engineer - Java Developer

Interviewed at EY

3.7★

Feb 28, 2022

What is the difference between Inner join and outer join? What is encapsulation in Java? What is the difference between LinkedList and HashMap?

Java Software Engineer

Interviewed at Accesa

4★

May 4, 2022

Work experience and technical knowledge.

Principal Software Engineer - JAVA

Interviewed at Pegasystems

3.8★

Mar 4, 2025

it has been explained in description section.

Java Software Developer

Interviewed at Picnic

3.3★

Mar 18, 2025

HR stuff about your past experience, and they will ask about your take home test

Senior Software Engineer - Java Developer

Interviewed at Capgemini Engineering

3.5★

Nov 13, 2017

Collection framework basic questions