Java Back End Developer Interview Questions

Java Back-end Developer

Interviewed at Holidu

4.5★

Oct 24, 2022

How does HashSet work internally?

Java Back-end Developer

Interviewed at Tufin

4.2★

Nov 10, 2019

1. Present a project. 2. Present you a code with bugs and the would like you to make it better with minimal changes! 3. Design a game (cracking the coding interview...)

Java Back-end Developer

Interviewed at SAP

4.2★

Jul 25, 2022

given a string, check if it's a palindrom given a string, check if it's a permutation of a palindrom

Java Back-end Developer

Interviewed at Infogain

3.6★

Jul 26, 2022

Find nearest int for a given integer from a integer array

Java Back-end Developer

Interviewed at Canva

3.9★

Sep 15, 2021

What is the difference between Java and JavaScript? Some basic knowledge on multi-thread, can't remember. If you have 1000 2d points as a tuple like (x1, y1) how could you store these points and count the number of occurrence of each position efficiently?

Java Back-end Developer

Interviewed at Josh Software

3.4★

Feb 25, 2025

Java 8 features,Spring Boot , Mricroservices, Security related question, Collection and framework

Java Back-end Developer

Interviewed at Fulcrum Worldwide

4★

Jun 20, 2025

Most of the questions are about spring boot and core java related. may be a online pdf can really help you for more questions. He also ask me for code which is finding 3 greatest no. from an unsorted array.

Java Back-End Developer

Interviewed at Citi

3.6★

Jul 27, 2010

XML: DOM vs SAX parsers

Java Back-end Developer

Interviewed at HelloFresh

3.3★

Oct 11, 2023

Why did you decide to apply to this role? What experience do you have that would be relevant to this role? What did you like most about the job description? Why are you leaving your current job? What do you know about our company's product/services?

Java Back-end Developer

Interviewed at Aubay

3.6★

Jul 18, 2023

1. Introduce Yourself. 2. Ennumerarte previous experiences.