10 Best Java Interview Courses for Beginners and Experienced in 2024

My favorite online courses to prepare for Java developer interviews in 2024 from Udemy, Pluralsight, and CodeCademy to prepare all essential topics for java interviews.

image_credit — Educative

Hello guys, if you are preparing for Java Developer interviews like for a core Java developer role for Java + Spring Boot Developer role in a big Investment bank like JP Morgan, Morgan Stanley, etc, or a Java web developer in service-based companies like Infosys, TCS, LuxSoft, Tech Mahindra, IBM, and Cognizant, and looking for some awesome courses and material, then you have come to the right place.

Earlier, I have shared the best coding interview courses and coding interview prep books which focused on essential coding interview skills like Data Structure and Algorithms, SQL, Linux, etc and in this article, I have shared the best courses to prepare for the Java developer interview in 2024.

While those are still very good to prepare for any coding interview including the Java developer role and you can use them to build your programming fundamentals.

In this article, I am going to share some of the best online courses from Udemy, Educative, DesignGuru, Pluralsight, and CodeCademy that you can take to prepare key topics like core Java, multithreading, concurrency, algorithms, data structure, system design, design patterns, and software architecture.

These are some advanced courses that focus on programming job interviews by sharing helpful questions and teaching you techniques to answer them.

I still have some plans to add more courses around software architecture and designing Microservices, so bookmark this article or respond with what topic you would like to include and you will get a notification when we update this article.

10+ Best Online Courses to Crack Java Interviews in 2024

Without wasting any more of your time, here is my list of 10 online courses to crack any Java Programming interviews. I have included courses to cover essential coding skills like Data Structure and Algorithms, Problem-solving, Core Java, Concurrency, Design Patterns, and Software Design, Object-oriented programming, SQL, and Spring Framework with Spring Boot.

1. Grokking the Coding Interview: Patterns for Coding Questions (DesignGuru)

One of the most essential things to crack any programming job interview is your ability to apply whatever you have learned to a completely unknown problem.

This is very important because sometimes you will face questions which you have never heard before, and you need to solve them right there. This course on DesignGuru helps you to build those patterns in your mind.

It will teach you some of the most useful techniques you can apply to coding problems and break them down into a known pattern.

For example, you can use Stack to convert a recursive solution to an iterative one. You can divide a number by 10 to get rid of the last digit and take the remainder to get the last digit. Similarly, a stack is very useful for parsing, etc.

Here is the link to join this awesome course — Grokking the Coding Interview: Patterns for Coding Questions

By the way, DesignGuru has many other Grokking courses to preapre for essential coding interview topics like OOP Design, System Design, Dynamic Programming etc and you can get access to all of their courses for a big discount by joining their All course bundle. You can also use code GURU to get 30% discount.

All Courses

2. Java Interview Guide: 200+ Interview Questions and Answers

This is your one-stop shop for all kinds of traditional Java interview questions you can expect in companies. It covers Java questions from telephonic round to face-to-face round and covers all essential Java interview topics like Java collections, generics, Java concurrency, core java, etc.

Many people prepare very hard for general topics like Data Structure and Algorithms, and System Design but forget to prepare for Core Java and OOP concepts like overloading and overriding which cost them their interview, by using this course you can cover those parts easily.

If you need to buy just one course for your Java interview preparation, then you should buy this course. It is also very affordable and you can buy this course for just $10 on Udemy sales.

Here is the link to join this course — Java Interview Guide: 200+ Interview Questions

3. Algo monster

This is another great platform to prepare for a Java coding interviews that I come across recently. This website is specially created to prepare and get succeed in FAANG interviews, which means if you go through this course, you will be well prepared for Java interviews as well.

It doesn’t teach you how to solve a particular coding problem but how to find the underlying pattern which can then be used to solve many more coding problems.

Apart from reading one of these books, you can also join Algomoster to get a boost to your coding interview preparation. You will learn the most important patterns and get results in the shortest amount of time possible.

It contains more than 48 Coding Patterns, meticulously Curated by Google Engineers, and more than 325 Lessons and Problems, 678 Illustrations along with Object-Oriented Design and System Design questions to make yourself completely ready for your next coding interview.

You can subscribe to Algomonster now for just $99 (69% discount) and give your interview preparation a new edge. Here is also a nice diagram from Algomoster which tells what patterns you should learn for your coding interview.

4. Grokking the Object-Oriented Design Interview (DesignGuru)

Another important topic in Java interviews is object-oriented analysis and design. You will be either given a requirement like design a vending machine or coffee machine and need to code in 2-hour or so with unit test, or you will be involved in verbal discussion.

If you have never done any object-oriented analysis and design, then this is a great course, not just to prepare for an interview but also to learn from real examples.

It not only has a set of carefully handpicked case studies, which have been repeatedly asked at the top tech companies like Amazon, Google, and Facebook, but also provides a thorough experience to handle different object-oriented design

Here is the link to join this course —Grokking the Object-Oriented Design Interview

5. Grokking Modern System Design for Software Engineers & Managers

System design is closely related to OOP design and analysis but focuses on the much bigger picture at component and tier level rather than class level. In order to solve system design questions like designing a website like Amazon, or designing a complex system handling millions of orders.

You need to know a lot of stuff to solve these problems from caching to DB interaction, from scaling to load-balancing, and how the distribution system works.

If you have never done this before, don’t worry, this is one of the best system design courses for Java interviews and it will walk you through some common system design problems from companies like Amazon, Apple, Facebook, Microsoft, Google, IBM, etc. to give you enough knowledge and skills to crack system design question on your Interview.

Here is the link to join this course — Grokking Modern System Design for Software Engineers & Managers

6. Java Multi-threading for Senior Engineering Interviews

Concurrency in Java is one of the most complex and advanced topics brought up during senior engineering interviews. Knowledge of concurrency and multithreading can put interviewees at a considerable advantage.

This course lays the foundations of advanced concurrency and multithreading and explains concepts such as Monitors and Deferred Callbacks in depth. This is also one skill that can separate you from the crowd, and this course is great for building necessary concurrency skills.

You will practice some common concurrency problems from programming interviews and learn some key techniques and concepts like latch, barriers, synchronization, race conditions, etc.

Here is the link to join this course — Java Multithreading for Senior Engineering Interviews

Btw, all the above four courses from the Educative platform. You have options either to buy these courses or go for the Educative subscription which costs around $14.99 per month (45% discount) and gives you access to their 100+ software development and coding courses.

I prefer the subscription because sometimes you just need that flexibility to join the course whenever you want without going into all the hassle of buying it

Educative Unlimited: Stay ahead of the curve

7. 200+ SQL Interview Questions

SQL is another topic that is very common in Java interviews. Good knowledge of SQL and Database concepts like normalization and query optimization goes a long way in securing a job and working on a complex project.

This course is good to prepare for an SQL Developer Interview with these 200+ real World SQL Questions and Practical Answers. You can use them to not only check your existing knowledge but also find your strong and weak areas and work upon them.

Here is the link to join this course — 200+ SQL Interview Questions

Btw, if you are new to SQL and Database then you can also check out these best SQL courses to build and revise some SQL and database fundamentals.

8. Grokking Dynamic Programming Patterns for Coding Interviews

You might know that Dynamic Programming (DP) problems can be some of the most intimidating on a coding interview. Even when it’s actually clear if a problem can be solved using DP (which it rarely is), it can be pretty challenging to even know where to start on the solution. Unless that is, you’re trained on the approach to solving DP problems.

This course is made from scratch with just that goal in mind. It’ll equip you with a set of easy-to-understand techniques to handle any DP problem. It's one of the best dynamic programming courses for coding interviews.

Rather than just having you try to memorize solutions, you’ll be walked through five underlying DP patterns that can then be applied to solve 35+ DP problems.

Here is the link to join this course — Grokking Dynamic Programming Patterns for Coding Interviews

And, if you find Educative platform and their Grokking courses like Grokking the System Design Interview, Grokking the Object-Oriented Programming interview then consider getting Educative Subscription which provides access to their 100+ courses in just $14.99 per month. It’s very cost-effective and great for preparing for coding interviews.

Educative Unlimited: Stay ahead of the curve

9. Data Structure and Algorithms Analysis — Job Interview

Along with SQL, Data Structure and Algorithms are two other skills that are very common in interviews. In fact, those are so important that if you don’t brush upon them, you will not go past the telephonic round in most interviews.

This course can be used to level up your Data structure and algorithms skills before Java interviews and in fact, it's not just useful for Java interview but also for any developer interview because Data Structure and Algorithms is a common topic.

here is the link to join this course — . Data Structure and Algorithms Analysis

10. Design Patterns in Java

Design patterns are like concurrency, an essential skill for Java developers. It’s expected from senior developers that they know about all object-oriented patterns and understand when to use them in your code.

If you don’t know about design patterns or GOF design patterns then this course will help you to discover the modern implementation of design patterns in Java, a must-have course for senior Java developers.

Here is the link to join this course — Design Patterns in Java

11. Pass the Technical Interview with Java [CodeCademy]

CodeCademy has a complete skill path in preparing for Java interviews. This one is not very comprehensive but you will get a chance to prepare for fundamental topics like HashMap, and other essential Data structures and searching sorting algorithms.

Here is what you will learn in this course :

1. Getting Started With Data Structures
2. Linear Data Structures (array, linked list, queue etc)
3. HashMap
4. Algorithmic Concepts
5. Nonlinear Data Structure (binary tree, binary search trees, and heaps)
6. Sorting algorithms
7. Graph Data Structure

Along with getting an overview of data structures, algorithms, and dig into building your first data structure! you will also practice common coding problems in Java in their interactive platform.

Here is the link to join this course — Pass the Technical Interview with Java

Btw, you would need a CodeCademy PRO to join this course. IT cost around $15.99 per month on a yearly plan and provides access to all the Codecademy content, courses, quizzes, and projects. You can use this to earn, practice &
apply job-ready skills.

The Easiest Way to Learn to Code: PRO | Codecademy

12. Spring and Spring Boot Interview Guide

Spring and Spring Boot is probably the most important framework for Java developers. The interviewer expects you to know how to work on Spring and Spring Boot project, and that’s why there will always be some questions on this topic.

This is a good course to prepare for Spring interview questions as you will learn to answer 200 interview questions on Spring, Spring Boot, and Spring MVC

Here is the link to join this course — Spring and Spring Boot Interview Guide

That’s all about some of the best courses to crack your next Java interviews. These courses cover some of the most essential topics for any programming job interviews and useful for both core Java developer looking to get into big investment banks like Goldman, Morgan, and others
and Java web developers working on service-based companies like Infosys, TCS, Wipro, Cognizant, Tech Mahindra, and others.

Other Java Interview resources for you

• How to Prepare for Java Programming Interviews in 2024 (guide)
• 133 Java Interview Questions from the last 5 years (list)
• 15 Data Structure and Algorithm Interview Questions (list)
• 10 Spring Framework Interview Questions (list)
• 6 Courses to learn Spring Framework in-depth (courses)
• 20 Hibernate Framework Interview Questions with Answers (list)
• 50 Java Concurrency Interview Questions (list)
• 10 Courses to prepare for Coding Interviews (course)
• 25 Java Collection Interview Questions (list)
• 10 Restful Web Service Interview Questions for Java developers (list)
• 10 Data Structure and Algorithms Courses for Interviews (courses)
• 50+ Data Structure and Algorithm Questions (questions)
• 20 Spring MVC Interview Questions for Java Developers (questions)
• 20 Spring and REST Interview Questions (questions)
• 20+ Spring Boot Interview Questions with answers (questions)
• 10 Best System Design Courses for Coding interviews (best courses)

Thanks for reading this article so far. If you find these best online courses useful in your interview preparation, then please share them with your friends and colleagues. If you have any questions or feedback, then please drop a note.

P.S. — If you prefer books, then you can also check out my book, Grokking the Java Interview and Grokking the Spring Boot Interview, you can buy them together for just $29.90 on Gumroad or just $9.9 on Amazon Kindle.

Grokking The Spring Boot Interview