Java Back End Developer Interview Questions

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 Aubay

3.6★

Jul 18, 2023

1. Introduce Yourself. 2. Ennumerarte previous experiences.

Java Back-end Developer

Interviewed at Amaris Consulting

3.3★

Sep 14, 2025

Sobre mi trayectoria, tanto académica como profesional.

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 Revolut

4★

Nov 24, 2025

1) Write a URL shortener 2) Concurrency questions: volatile, atomics, thread-safe containers, deadlocks. 3) Design a backend for a new feature in an existing mobile app that issues new cards and tracks delivery.

Java Back-end Developer

Interviewed at Neuronimbus

4★

Feb 14, 2023

Explain your Projects? print pattern without using loop?

Java Back-end Developer

Interviewed at Meituan

3.7★

Aug 27, 2022

Please demonstrate the difference btween UDP and TCP.

Senior Java Back-end Developer

Interviewed at FlatexDEGIRO SE

3.5★

Apr 4, 2017

What is the difference between TCP and UDP in socket programming?

Senior Java Back-end Developer

Interviewed at FlatexDEGIRO SE

3.5★

Apr 4, 2017

What is the lasy fetching in hibernate?