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Java Interview Help (Udemy.com)

Quickly review java, spring boot, micro services, rest, devops and cloud for java interviews

4.6
2,465 reviews

Created by: Bharath Thippireddy

Last updated September 2026

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What you will learn

  • How to talk about your experience and your project
  • Frequently asked Core Java Interview Questions
  • Collections and Multithreading Questions
  • Java 8 to Latest Feature Review
  • Spring Boot Interview Questions
  • Spring Data JPA and Hibernate Interview Questions
  • Microservice Interview Questions
  • REST and SOAP
  • JMS - Java Messaging Service
  • Maven Interview Questions
  • Docker Interview Questions
  • Kubernetes Interview Questions
  • AWS Interview Questions
  • and more

How it compares

Against the other 231 rated Udemy courses in Java on CourseDuck:

  • Rating4.6 out of 5higher than 71% of them
  • Reviews2,465#85 of 232 by number of reviews
  • Length7.9 hoursshorter than 56% of them
  • Last updatedSeptember 2026more recently than 92% of them

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Course Description


Sample of the reviews:

It looks really helpful, I will surely use those templates to showcase my own. I came here for java interview question but you reminded me that presentation skills are very imp to grab and opportunity and showcase the experience. Thanks a lot! - Hrishikesh Raverkar

So far the Best Java Web Dev Interview Prep course available on udemy! - Parth


All source code is available for download

Responsive Instructor - All questions answered within 24 hours

Professional video and audio recordings (check the free previews)


If you are a Java Developer preparing for an interview then this course is for you.This course is for students who have taken my java courses  or any junior, mid level or senior java developers who want to crack java interviews.


Talking about You and Your project

Tell us about yourself

About Me Preparation Template

Your recent project

Common Core Java interview Questions

What are the important components of java

What are constructors

equals method vs == operator

final finally and finalize

What are generics


Collections

What are the different collection Types

ArrayList vs LinkList

Vector vs ArrayList

HashMap vs LinkedHashmap

Failfast vs Failsafe Iterators

How to create a Generic Class

Producer Consumer Pattern

Comparable vs Comparator

What are concurrent collections


Multi Threading

How to create threads

What is Synchronization

What are class level locks

What are synchronized blocks

How do threads Communicate


Java 8

Features

What is a Lambda

What are Functional Interface

What is the Use Lambda

What is a Predicate

What are Predicate Joins

What is a Function

What are Default methods on interfaces

How to use Stream Filter

Other Methods on Stream

Map vs Filter


Java 9

What are private methods in interfaces

What are Immutable Collections

Stream API Updates

Enhancements to try with resource


Java 10

Features

What is var

Collectors API updates


Java 11

String API Updates

File API Updates

isEmpty method


Java 12

String API Updates

Compact Number Format

More Unicode Chars

Collectors API updates


Java 13 and 14 Features

What is instanceof Pattern Matching

What is a Record

What are Helpful NullPointerExceptions

What are Switch Expressions


Java 15 Features

What are Sealed Classes

Record Enhancements


Spring Boot

What is Dependency Injection and IOC

What are the Spring Bean Scopes

Prototype in Singleton

What are HTTP Scopes

What are the Problems with traditional spring

Why use Spring Boot

What is @SpringBootApplication

What is @SpringBootTest


Spring Data JPA and Hibernate

What is Spring Data JPA

How to use Spring Data JPA

Create Coupon Service Data Access Layer

Create Product Service Data Access Layer

What are the different Entity Object States

Wha are various JPA Associations

What is Cascading

What is Lazy Loading

What are two levels of caching

How to configure Second Level Cache


AOP

What is AOP

Wha is the AOP Terminology


Transaction Management

What is a Transaction

What are transaction ACID Properties

What are Distributed Transactions

What are the Transaction Isolation Levels

What is Optimistic vs Pessimistic Locking


Micro Services

What is a Monolithic Application

What are Microservices

Why Microservices

REST vs Messaging


REST API

What is REST

HTTP PUT vs POST and PATCH

How did you create REST API

Create Coupon Service REST API

Create Product Service REST API

Use RestTemplate

Test End To End

What are Spring Boot Profiles


SOAP Webservices

What is SOAP

What are the Java EE Web Service Standards

What are the Two Types of SOAP Design

What is WSDL

What is the WSDL Structure

What is the Top Down approach

What is the Bottom Up Design

What is a SOAP Client

What is MTOM

SOAP vs REST


Security

What are the Components of Spring Security

How did you secure your REST APIs

What is OAuth

What are the Key Components in OAuth

What is the OAuth Workflow

What are the OAuth Grant Types

What are the Different Grant Types

What is JWT

Hot to configure JWT

How to rotate tokens

How to use Tokens with Frontends

What is CSRF

How to prevent CSRFs

What is CORS


Java Messaging Service

What is messaging

Why Messaging

What is JMS

What is the KEY JMS API

Two Types of messaging

JMS Transactions

What is Message Grouping


What is. a MDB

Design Patterns

What are the Design Patterns you have used

What are Singleton Best Practices


Testing

Wha is Unit Testing

What is Mocking

What are the various Testing Tools you have used

What are the important JUnit 5 and Mockito annotations


Devops

Continuous Integration vs Delivery vs Deployment

What is Jenkins

How to create a Jenkinsfile

What are the Steps to automate a deployment

How to passParams and Inputs to Jenkins Build


Build Tools

What the different Maven Scopes

snapshots vs release

How to Control Dependencies

How to Override a Transitive Dependency Version


Docker

What is Containerization

What is Docker

What are the Docker Components and Workflow

Why Docker

What are some of the Docker Commands you have used

What are Docker Volumes

Volumes vs Bind Mounts

How did you dockerize your application

What is docker compose


Kubernetes

What is Container Orchestration

What is Kubernetes

What is a Pod

What is a ReplicaSet
Read More All Levels All Levels product length iconTime: 7.9h

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Instructor Details

Bharath Thippireddy

Bharath Thippireddy is an Entrepreneur, Software Architect, Author, Actor, and Public Speaker who has trained 950,000+ students across 209 countries.

He believes that learning is a crossing — from where you are to where you are capable of being. That belief drives every course he builds.

Bharath has mentored students and professionals across India and the USA — in classrooms, corporates, and agile conferences. He voluntarily teaches interview and soft skills at Vivekananda Kendra. He is the author of Hanuman's Leap, a book that takes the ancient wisdom of the Sundara Kanda and builds it into a complete framework for life's turning points. It comes out Diwali 2026 . He is currently completing his Executive MBA at the Indian School of Business.

He loves learning — in technology and in life — and shares everything he discovers.

From 50+ courses with 950,000+ learners, you can pick a track and master:

Generative AI — OpenAI, LangChain, LangGraph, Agentic AI with n8n, Azure OpenAI, GitHub Copilot

Spring Boot — full stack projects with Angular and React

Angular and React — with Java or Node backends

Python — core Python through Django REST Framework

DevOps and Cloud — Docker, Kubernetes, AWS EC2, Elastic Beanstalk, Jenkins, GIT, and more

Java — Design Patterns, Web Services, Messaging Service

Spring — Security, Boot, Data with Hibernate, Data REST

Serverless — AWS Lambda

Read More

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Reviews

4.6

2,465 ratings on Udemy

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Write a review

By Ajay U on 5/5/2026

It's going good bharath Ji, Keep it up and please keep up the same patience and energy level to explain from niche , All thanks to u for my deep knowledge understanding.

By Ricardo Cuevas on 7/13/2025

This is an excellent course that covers most of the essential topics required for Java developers. It not only provides a solid foundation but also serves as a great motivator to dive deeper into the topics discussed. I highly recommend this course to anyone looking to strengthen their Java skills.

By Somanadha Satyadev Bulusu on 4/19/2024

First of all idea of creating a comprehensive Interview Helper Tutorials is really great. I really like the topics chosen by the tutor and they really make sense. When it comes to content there few things that I feel should been done in a different way. 1 In the beginning of each section a overview of what is that particular section is about should have been there 2. The order of some of the lessons in some sections is not aptly don (Ex: Section 15) 3. Each section should have quizzes so that learner understand his/her level of mastery in that section 4. Narration is bit slow, So I bumped up the listening speed . 5. Talk about bad practices used in the lessons and explain the right approach. I understand that for ease with teaching it is okay to do so, but but should have been mentioned about that. For example password in plain text in properties files

By Nishitha on 6/5/2023

I'm a Java developer with 6+ years of experience. This course has been very informative and useful for my interview. I would recommend a quick go-through of this course before facing interviews. It makes a whole lot of difference. Thanks to this, I got selected.

By Anonymized User on 3/15/2023

he is able to condense a lot of key take aways into very short video. dont be deceived by the shortness of each video because a lot of information is packed into them. one thing that can be improved on is that he talks about terms in a video that you might feel confused about but explains it in the later section. it should be the other way around.

By Jesus Tapia Bravo on 6/28/2022

I believe that this is a great refresher because it has a lot of concepts and quick recipes for the technologies that are surrounded by Java technologies. Also could be a great idea to have some behavioral interview questions that sometimes have a great impact on the final decision of the interviewer.

By Anonymized User on 10/24/2021

Concise and targeted course for interview refresher intention in mind. Vast topics are covered in very simple way and put those in a very well structured manner. I would recommend all to get this course and refresh your overall skills by go to each of it's topic. It was very helpful for me. Well done Bharath. Thank you.

By Anonymized User on 8/29/2021

The course serves good for refreshing what you already know. The instructor is good at his explanation. The only thing that bothers me is that it's tried to add a lot of topic, instead I would have preferred content in depth too as that's missing.

By Hrishikesh Raverkar on 6/4/2021

It looks really helpful, I will surely use those templates to showcase my own. I came here for java interview question but you reminded me that presentation skills are very imp to grab and opportunity and showcase the experience. Thanks alot!

By Sairag Gaddam on 5/12/2021

useful and want the code in resources so that we can execute on our machine to learn and Need coding questions and answers on problem solving for example question is like display the some integers in triangle formats using the Java 8 code ,these kind of questions and answers go more indepth of resloving coding questions in interview rounds,Thank you

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Overall Score : 92 / 100

Java Interview Help
Visit course on Udemy Write a review
  • Video Duration: icon 7.9h
  • Price: $69.99
  • Provider: icon Udemy
  • Updated: icon September 2026
  • Level: All Levels All Levels
  • Language: icon English
  • Certificate: icon Yes
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