Java Back End Developer Interview Questions

Java Back-end Developer

Interviewed at Tata Consultancy Services

3.5★

Nov 6, 2024

Diff b/w == & .equals()

Java Back-end Developer

Interviewed at King

3★

Jul 29, 2022

Basic Java questions, focus on concurrency and data structures

Java Back-end Developer

Interviewed at Nagarro

3.9★

Mar 6, 2025

Coding problems and expected output or output is correct or not.

Java Back-end Developer

Interviewed at Neema

4.1★

Dec 10, 2022

1. Given a cloud-based payments system with several servers in which transactions are saved in memeory, how could a load-balancer cause issues? 2. How to perform a lock in MySQL DB? 3. How MySQL could help us detect unprocessed transactions?

Design Parking Lot Class diagram, schema design

Java Back-end Developer

Interviewed at OLX Group

3.9★

Jun 10, 2022

Create car-model classes with some mocks and methods. Live code link: https://gist.github.com/prozz/65534fa2370fa8cd86a5196f396048fa

Java Back-end Developer

Interviewed at MetricStream

3.8★

May 15, 2021

How do you secure your spring application ?

Java Back-end Developer

Interviewed at Capgemini

4.1★

Mar 26, 2025

What challenged you face in your Project and how you overcome that problem

dsa, java, linked list, array

Java Back-end Developer

Interviewed at OTKRITIE Financial Corporation

4★

Sep 2, 2020

Consider some coffee shop has an API which exposes coffee prices. You should get prices after all beans are instantiated. How would you do this (Spring) ?