Java67

I've Read 20+ Docker Books - Here Are My Top 5 Recommendations for 2027

2026-09-21T06:38:20.325-07:00

Hello guys, if you are a developer or software engineer then you might have heard about Docker and containers. Being an author of a Java and Programming blog, I daily receive a lot of questions about Docker like what is Docker? what is Docker compose, which Docker commands should I learn, what is Docker Hub, How can I migrate my application to Docker and how can I deploy Docker container on AWS, Azure, and GCP. These are also some of the common doubts of programmers across the world. Let's start with What is Docker and why a Programmer should learn Docker? Simply speaking, Docker programming language makes project management and deployment seem easy.

Is Udacity’s Agentic AI Nanodegree is the Best Agentic AI Resource in 2026? Review

2026-09-20T07:56:44.350-07:00

Hello friends, Agentic AI is probably the biggest shift happening in AI right now. A year ago, most developers were building simple AI chatbots.

Now? Companies want developers who can build:

AI agents
Multi-agent systems
Autonomous workflows
AI systems that can reason, plan, and execute tasks

And honestly, this trend is only getting started.

That’s why I recently spent time exploring the Agentic AI Nanodegree on Udacity, and after going through the curriculum, projects, and hands-on content, I think this is one of the most practical AI Engineering programs available right now for developers.

Agentic AI Nanodegree: Build Advanced AI-Powered Agents | Udacity

Launch your career by designing and deploying advanced AI-agents. Learn multi-agent systems, prompting techniques like…

click.linksynergy.com

If you are wondering whether the Agentic AI Nanodegree is worth it in 2026, this review will help you decide.

Why Agentic AI Matters in 2026?

The AI industry is rapidly moving beyond simple prompt-response systems.

Modern AI systems are becoming:

autonomous
collaborative
tool-using
workflow-driven

Instead of asking ChatGPT one question at a time, developers are now building systems where multiple AI agents:

communicate with each other
use APIs
interact with databases
plan tasks
execute workflows

This is exactly what the Agentic AI Nanodegree focuses on.

Agentic AI Nanodegree: Build Advanced AI-Powered Agents | Udacity

Launch your career by designing and deploying advanced AI-agents. Learn multi-agent systems, prompting techniques like…

udacity.com

And that’s what makes it different from most “AI courses” online.

What is the Agentic AI Nanodegree?

The program is offered by Udacity and is designed to teach developers how to build sophisticated AI agent systems.

Instead of focusing only on prompts or chatbots, the course teaches:

Multi-agent architectures
Agent orchestration
AI reasoning workflows
Tool usage
State management
Planning systems
AI workflow automation

The course is:

Intermediate Level
Around 53 hours
Rated 4.8/5
Updated recently in May 2026

And one thing I really liked:

👉 It focuses heavily on practical implementation.

Here is the link to join — Agentic AI Nanodegree

What You Learn in This Agentic AI Nanodegree?

The curriculum is surprisingly modern and aligned with current industry trends.

Some of the key topics include:

Multi-Agent Systems

You learn how multiple AI agents collaborate together to solve problems.

This includes:

coordination
orchestration
communication patterns
state management

This is important because most real AI systems in the future won’t be “single chatbot apps.”

They’ll be teams of AI agents working together.

Advanced Prompting Techniques

The course covers modern prompting methods like:

Chain-of-Thought
ReAct
reasoning workflows

These techniques are now becoming essential for building reliable AI systems.

Agentic Workflows

One thing I liked is that they teach actual workflow patterns like:

Routing
Parallelization
Tool calling
Planning systems

This is the kind of stuff many YouTube tutorials completely skip.

Python-Based Agent Development

You also build AI systems using Python, which is great because Python is still the dominant language for AI development.

The course teaches how agents:

interact with APIs
query databases
execute workflows
automate tasks

Which makes the learning highly practical.

The Projects Are Actually Useful

This is probably the strongest part of the program.

Instead of toy examples, the Nanodegree includes projects like:

Multi-agent travel planner
AI-powered project manager
Automated sales system

These are portfolio-worthy projects that help developers understand how real AI systems are built.

And honestly, this project-first approach reminds me of why I liked Udacity Nanodegrees years ago.

They focus more on:

“building things”

instead of just watching videos.

Here is the link to join this nano-degree — Agentic AI Nanodegree

Who Should Take This Agentic AI Course?

I think this Nanodegree is excellent for:

Software Developers

Especially backend and full-stack developers who want to move into AI Engineering.

AI Engineers

If you already know basic AI concepts and want to level up into agentic systems.

Developers Interested in AI Agents

This course is heavily focused on:

AI workflows
autonomous systems
orchestration
reasoning

which are becoming extremely valuable skills.

Prerequisites

This is not a complete beginner AI course.

Udacity recommends some prior knowledge before joining.

So you should ideally know:

basic Python
APIs
software development fundamentals
some understanding of AI concepts

If you are a complete beginner, I would first recommend starting with the AI Nanodegree before jumping into Agentic AI.

Agentic AI Nanodegree: Build Advanced AI-Powered Agents | Udacity

Launch your career by designing and deploying advanced AI-agents. Learn multi-agent systems, prompting techniques like…

click.linksynergy.com

That creates a much smoother learning path.

What I Liked Most

Here’s what stood out to me:

1. It Focuses on Real AI Trends

Many AI courses are still stuck teaching basic prompts.

This one focuses on:

agents
orchestration
workflows
automation
reasoning systems

which is where the industry is heading.

2. Hands-On Learning

The projects are practical and useful.

You actually build systems instead of passively consuming videos.

3. Modern Curriculum

The curriculum feels current and aligned with how AI products are evolving in 2026.

That’s surprisingly rare.

4. Portfolio Projects

The projects are good enough to showcase on:

GitHub
LinkedIn
resumes

which is a big advantage for developers transitioning into AI Engineering.

Is Agentic AI Nanodegree Worth It in 2026?

In my opinion:

👉 Yes, especially if you are serious about AI Engineering.

The biggest opportunity right now is not just using AI tools.

It’s building:

AI systems
AI workflows
AI agents
autonomous applications

And this Nanodegree teaches exactly that. You will also get a certificate from Udacity as shown below.

Here is the link to join this nano-degree — Agentic AI Nanodegree

Pricing and Trial

Another good thing is:

👉 Udacity offers a 7-day free trial

So you can explore the content before committing.

You can check the program here: 👉 Agentic AI Nanodegree

Agentic AI Nanodegree: Build Advanced AI-Powered Agents | Udacity

Launch your career by designing and deploying advanced AI-agents. Learn multi-agent systems, prompting techniques like…

click.linksynergy.com

And if you’re completely new to AI, I also recommend looking at their broader:

👉 AI Nanodegree

Artificial Intelligence Online Training Course | Udacity

Become an AI Engineer: learn foundational and in-depth concepts like minimax search, Bayesian networks & agent-based…

udacityy.com

You can explore both on: 👉 Udacity

Final Thoughts

That’s all about whether Agentic AI nanodegree from Udacity is really worth it in 2026 or not. AI Engineering is evolving very quickly.

The developers who understand:

AI agents
orchestration
reasoning workflows
multi-agent systems

will likely have a huge advantage over the next few years.

The Agentic AI Nanodegree is one of the few programs I’ve seen that actually focuses on these modern concepts in a practical way.

If you want to go beyond simple chatbots and learn how real AI systems are built:

👉 This course is definitely worth checking out in 2026.

P. S. — If you want to do just one right now, go ahead and join the Agentic AI nano-degree, its also free for next 7 days so it gives you a chance to learn Agentic AI for free. You will thank me later.

Agentic AI Nanodegree: Build Advanced AI-Powered Agents | Udacity

Launch your career by designing and deploying advanced AI-agents. Learn multi-agent systems, prompting techniques like…

udacity.com

Should You Join Bugfree.ai for System Design Interview Prep in 2026?

2026-09-18T07:05:24.524-07:00

Hello guys, If you’re preparing for system design interviews — especially for FAANG or top-tier tech roles — you’ve likely encountered Bugfree.ai.

In the past, I have tried various online platforms to learn System Design like ByteByteGo but one thing I missed is online interactive practice, something like LeetCode where I can solve problems, get it evaluated and also get points to move up the leader board.

During my search, I have recently come across this amazing platform and its the platform brands itself as “LeetCode for System Design,” offering a mix of mock interviews, structured question practice, real-time feedback, and more.

But does it truly deliver value? Let’s break it down.

What is Bugfree.ai?

Bugfree.ai is an AI-driven platform aiming to revolutionize system design preparation.

It offers:

150+ system design challenges, spanning everything from API design and high-consistency systems to job schedulers and ML-infused pipelines.
AI mock interviews that simulate real interview scenarios, including follow-up questions and scoring feedback on communication, clarity, and visuals.
Structured learning materials like checklists, design frameworks, walkthroughs, and score tracking over time.
Additional features: behavioral interview prep, resume builder, and coded walkthroughs of typical algorithm problems.

Here is the link to join this platform — Join Bugfree.ai

Pros of Using Bugfree.ai

Apart from LeetCode style online practice of System Design problems, here are the key benefits I found while using Bugfree.ai for my System Design interview preparation:

AI-Powered Mock Interviews with Instant Feedback
Users report realistic AI simulations that prompt follow-up questions and provide actionable feedback on diagrams, communication, and written answers. A Reddit post noted how practicing with the AI improved not just system design fluency but also clarity in English explanations.
Large & Updated Question Bank
Bugfree.ai boasts over 150 diverse system design problems — ranging from URL shorteners to real-time notification systems — with frequent updates to mirror industry trends.
Structured Learning and Walkthroughs
The platform includes frameworks, checklists, and guided solutions to help structure your approach — something many platforms lack.
Progress Tracking
Built-in tracking allows learners to monitor their performance and progress over time, making their prep more measurable.
Accessibility & Convenience
Fully online and available anytime, Bugfree.ai serves as a flexible alternative to live coaching or in-person classes.

Overall a great platform to add in your System Design interview preparation journey. It nicely complements what ByteByteGo offers with online practice, AI based mock interview and progress tracking.

What Could Be Better?

Here are few things which could be better to make this even more useful platform for system design interview:

Cost Considerations
While specific pricing isn’t openly listed, full access — including AI mocks and detailed walkthroughs — appears gated behind paid tiers. This might be costly for self-learners compared to free resources or peer study groups.
No Human Mentorship
AI feedback is helpful, but can’t entirely replace the nuance, empathy, and insight offered by a live mentor during complex discussions.
Less Depth than Some Alternatives for Architecture Breakdown
While question-based depth is strong, Bugfree.ai lacks deep narrative-style instruction — something ByteByteGo, DesignGurus.io, or Educative excel at.
Limited DSA Practice
If you’re also preparing for coding interviews, Bugfree.ai doesn’t offer standalone DSA prep; you’d need separate platforms for that.

Bugfree.ai vs. Other System Design Platforms

Now, let’s compare Bugfree.ai with other System Design resources and find out what does Bugfree.ai offer compared to them

Bugfree.ai

AI-powered mocks that simulate realistic system design interviews
Instant feedback on diagrams, communication, and structure
Large and constantly updated repository of system design problems
Structured frameworks, walkthroughs, and progress tracking
Fully online and self-paced — no scheduling required
Lacks live mentorship and human nuance in feedback
Doesn’t include coding (DSA) prep — best used alongside other tools

ByteByteGo

Visual, diagram-first lessons that simplify complex system concepts
Deep case studies on designing real-world systems (e.g., Twitter, YouTube)
Ideal for visual learners needing conceptual clarity
Offers both text-based books and video content
Less interactive practice — no real-time mocks or written submissions

DesignGurus.io (Grokking Series)

Pattern-based learning approach (e.g., caching, rate limiting, indexes)
Interactive lessons with quizzes and coding playgrounds
Excellent for building structured concept understanding
Strong for system design fundamentals and recurring patterns
No AI feedback loops or dynamic mocks — more static learning experience

Educative.io (Grokking the System Design Interview)

Interactive, guided scenarios with quizzes and text-based walkthroughs
Covers a broad array of system design topics and frameworks
Self-paced and beginner-friendly — lots of scaffolding
No AI-driven feedback or mock interviews included
Lacks real-time performance tracking or submission review

Here is also a nice table diagram to compare Bugfree.ai with other platforms:

Summary: Which Platform is Best for You?

So, now, let’s see which platform is best for you for system design preparation :

Use Bugfree.ai if you want:
-> Real-time, AI-generated feedback; hands-on mock interview experience
-> To simulate interview pressure and improve delivery and clarity
Use ByteByteGo if you want:
-> Rich, visual breakdowns of large-scale systems and architecture insights
-> To build deep conceptual understanding before practicing
Use DesignGurus.io if you want:
-> A structured, pattern-driven approach to system architecture
-> Frameworks and templates to rehearse and internalize repeatedly
Use Educative.io if you want:
-> Interactive, guided walkthroughs with scaffolded learning
-> A gentle entry into system design scenarios and principles

Final Verdict — Should You Use Bugfree.ai?

Yes — if you’re committed to mastering system design through realistic, iterative practice and value AI-powered feedback, Bugfree.ai delivers strong value for serious preparation.

It’s especially great for:

Engineers targeting FAANG-level system design rounds
Visual learners who benefit from structured, practice-based learning
Those familiar with system design basics and ready to write and refine solutions under pressure

However, if you are on a tight budget or prefer mentor-led coaching or conceptual deep-dives, consider combining Bugfree.ai with complementary platforms — or start with free resources like YouTube channels and public blogs.

Want to Explore Further?

You can learn more and try Bugfree.ai here:
Explore Bugfree.ai and try AI mock system design interviews →

Need deeper conceptual prep or visual walkthroughs along with AI practice? Combine Bugfree.ai with:

ByteByteGo’s system design course and books for clarity and depth
DesignGurus.io’s text-based frameworks and patterns for structured concept learning

Bugfree.ai takes a bold, interactive approach to system design prep — not perfect, but a powerful tool when used strategically

All the best for your System Design Interviews, if you have any doubts or questions, feel free to ask in the comments.

P. S. — If you just want to do one thing at this moment, go join Bugfree.ai and start learning System Design concepts, you will thank me later. Make it a goal for the new year and you will surely be a better Software Engineer.

Master System Design & Behavioral Interviews Like Leetcode

Prepare for software engineering interviews with 150+ system design and 30+ behavioral questions at bugfree.ai. Get…

www.bugfree.ai

Why Codemia is best place for System Design Interview Preparation in 2026

2026-09-17T07:28:13.103-07:00

Hello guys, if you are preparing for tech interviews then you may know that how important System design interviews are. In this highly competitive job market where everybody is a Leetcode God, its no longer only thing you need to crack Software engineering interview.

Instead, you also must have good knowledge of System design and software architecture, particularly if you are an experienced developers to go past first few rounds.

I have been sharing a lot of system design resources like best System Design courses, books, websites, newsletters, cheat sheets, mock interviews, blogs, tips, GitHub repo and white papers, in past few weeks but one thing which was missing on it was active practice website where you can solve System design problems like you solve DSA problem in Leetcode .

I kind of love Leetcode because it give me joy when I solve any problem without assistant but with system design its not like that, first its hard to understand system design problem and then its a discussion which can be best done with two or more people.

If you are a solo learner then you will feel asleep in 5 minutes you started reading any system design books like “Designing Data intensive Application”, or “System Design Interview - An insider’s guide” which may kept you awake a bit longer.

But the point is there is no Leetcode like resource for System design prep, but not any more.

Enter Codemia.io, which is created to fill this gap and allow you to practice System design problem in Leetcode style.

This website provides more than 120+ popular system design problems which you can practice system design problems like the way you practice data structure and algorithms on Leetcode.com.

It has many free questions which you can solve and many locked questions which are available to member and you can get membership for just $69 at the moment which is nothing but cost of a book and definitely worth investment. You can learn more about pricing here

Master System Design Interviews Through Active Practice

Passively learning system design does not work. Now you can practice system design problems like the way you practice…

codemia.io

Now, let’s deep dive into this brand new platform to learn System Design by solving problem and find out what its worth.

They have also expanded their catalogue and added many new System design questions as well as 130+ questions on data structures and algorithms, Object Oriented Programming and design.

They have also improved their AI features and make it much easier and effective to practice System design problems online.

Also they now have biggest collection of company wide system design problems which means if you have interview with Amazon, you can see what questions were asked their and practice accordingly.

What is Codemia.io?

Codemia.io is a new website which allows you to practice System design problems in Leetcode style. It has both free and paid System design problems for practice.

There are total 120+ System design questions, many of them are taken from past interviews like Designing a URL Shortner like TinyURL, Designing a Chat System like WhatsApp or a Video Stream platform like YouTube, or a Music streaming platform like Spotify.

Most important thing is they provide a structure through which you can solve or approach a System design problem like Functional and non-functional requirement, back of envelop estimation, API Design, High and low level design, database design, and component designs.

It also covers Object Oriented Design and Machine Learning System design which is closely related to system design to provide a complete preparation.

One of the best thing about Codemia.io is AI feedback and quick evaluation which gives you feeling of accomplishment and also encourage you to correct and learn more.

You basically pick a problem, write down your solution in the structure they provide, which covers many key steps.

You then receive feedback from AI and you can also share solution for further feedback. This feedback loop makes learning engaging and rewarding.

Here is the link to learn more about Codemia.io — Join Codemia

How Codemia.io Helps to Practice System Design Problems for Interviews?

Here is an example of how you should approach a System design problem on interview, in this example we will use the URL shortening problem which is mostly asked on FAANG and tier 2 tech companies:

1. Functional

First thing first, you should list functional requirements for the system (Ask the chat bot for hints if stuck.)… Yes, Codemia.io also has a Chat bot which can be used as a companion while solving system design problem.

2. Non-Functional

List non-functional requirements for the system… like failover, avaibility, security, logging etc

3. Capacity estimation

Estimate the scale of the system you are going to design… like how much storage you will need, network bandwidth, RAM, CPU, Servers, cost etc.

4. API design

Define what APIs are expected from the system…

5. Database design

Defining the system data model early on will clarify how data will flow among different components of the system. Also you could draw an ER diagram using the diagramming tool to enhance your design…

6. High-level design

You should identify enough components that are needed to solve the actual problem from end to end. Also remember to draw a block diagram using the diagramming tool to augment your design. If you are unfamiliar with the tool, you can simply describe your design to the chat bot and ask it to generate a starter diagram for you to modify…

7. Request flows

Explain how the request flows from end to end in your high level design. Also you could draw a sequence diagram using the diagramming tool to enhance your explanation…

8. Detailed component design

Dig deeper into 2–3 components and explain in detail how they work. For example, how well does each component scale? Any relevant algorithm or data structure you like to use for a component? Also you could draw a diagram using the diagramming tool to enhance your design…

9. Trade offs/Tech choices

Explain any trade offs you have made and why you made certain tech choices…

10. Failure scenarios/bottlenecks

Try to discuss as many failure scenarios/bottlenecks as possible.

11. Future improvements

What are some future improvements you would make? How would you mitigate the failure scenario(s) you described above?

You can see that its a very detailed way to solve a problem and touch based almost all part of system design. It also comes with a whiteboarding and diagram tool which allows you to draw diagrams, another key expect of system design.

15 Easy System Design Problems for Interviews 2026

Codemia.io have a huge list of system design problem you can practice. They are divided into different categories like Easy, Medium, Hard, and Advanced.

You can start with easy ones first, many of them are also free but for others you need to take subscription which cost around $69 per year, not that costly.

Here is a list of Easy System design problems to start with:

While few questions from this list is absolutely free for others you need to take membership but that’s worth it because you get AI feedback and also access to 75+ high quality solutions.

You can see the full list of System design problem on Codemia here

Codemia.io vs DesignGuru.io vs Educative’s System Design Interview

Now when it comes to comparing Codemia with other popular System design preparation website like Design Guru, and Educative , here is how they stack with other.

You can see that Codemia.io got the highest number of system design problem, almost 120+ and the list is still growing, compare that to handful of System design problem with DesignGurus.

It also got interactive learning and AI feedback which is not available yet on other system design learning platforms.

It also got Structural breakdown of System design problem which is probably the best thing about Codemia.io and also not available on other platform.

It also has a community where you can ask questions, clarify doubts and get your solution reviewed, which is amazing for anyone preparing for System Design.

I highly recommend to join Codemia to prepare well for System design in 2026.

Is Codemia.io Really worth it?

Codemia.io is definitely worth 100% for its huge collection of System Design problems, a structured approach to solve those problems, feedback from AI for continuous improvement and a supporting community for further learning.

I highly recommend you to join Codemia.io to anyone who is preparing for System design interview.

It not only provide a Leetcode style active learning platform on System design but also its AI feedback makes learning really engaging and rewarding.

It also got 120+ high quality questions and 75+ high quality solutions on common System design problems most asked from Google, Amazon, Apple and other top companies .

Overall it provides a a better way to prepare for for System Design Interviews. By joining Codemia.io, you can save months of study, have better retention and achieve deeper understanding!

It’s also very affordable and with just $69 per year, the price is nothing compared to other System design platforms like ByteByteGo, Design Guru, Exponent, Educative and Udemy.

In short, a great platform for System design preparation and I highly recommend it. If you are in hurry, just go and join Codemia.io and you will thank me later.

Here is the link — Join Codemia.io for $69 Now

And here is what other people are saying about this website

You can see the feedback is quite positive and people are enjoying solving System design problem on Codemia, which is a big big advantage for system design learners

That’s all about Codemia.io, a Leetcode style website to learn System design for interviews. Codemia.io is 100% worth it for anyone preparing for system design interview due to its 120+ popular system design problems, 75+ high quality solutions, AI driven feedback and interactive learning experience.

It also provide a comprehensive structure which you can use to solve any System design problem. It’s also one of the rare website which is equally good for both beginners and experienced developers.

Over all a great resource for System design interview and I highly recommend it. You can learn more about Codemia.io here.

Master System Design Interviews Through Active Practice

Passively learning system design does not work. Now you can practice system design problems like the way you practice…

codemia.io

Other System Design Articles and Resources you may like

Thanks for reading this article so far. If you like this review of Codemia.io, a new website for system design preparation then please share with your friends and colleagues. If you have any questions feel free to ask in comments.

Master System Design Interviews Through Active Practice

Passively learning system design does not work. Now you can practice system design problems like the way you practice…

codemia.io

How to Prepare for Coding Interviews in 2026? (with Resources)

2026-09-15T08:20:14.176-07:00

Hello guys, are you preparing for coding interviews but not sure where to start with? Are you drowned in the sea of Data structures and algorithms and System design and what not then you have come to the right place.

In the past, I have shared best coding interview books and courses, best System design books and courses, and in this article, I will share with you a systematic approach to prepare for coding interviews and also covering all the bases.

Looking for job in this tough market is not easy as many people are looking for the job and market is flooded with a lot of talented people, thanks to what happening in the world.

But that should not be an excuse but you also need to level up yourself to stand a chance.

Here are things you can do on your side for rock solid preparation.

By the way, if you are looking for one stop shop to prepare for coding interview then DesignGurus.io is a great place to start with.

They have many Grokking courses to prepare for coding interview 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

Buy all courses together to save 35% and have lifetime access.

designgurus.org

How to Crack Coding Interviews in 2026?

Here is your step by step guide to prepare well and crack the coding interviews and covering all the topics which matters:

1. Data Structures and Algorithms

If you are rusty, start with top interview questions:

Algomonster — http://shrsl.com/483tp
Bugfree.ai — LeetCode for System Design
Educative-99 — https://buff.ly/3LFG4zL (Available in both Python and Java) i twill teach you 26 key coding interview patterns
Blind 75: lnkd.in/g5wx7QSq
Grind 75: lnkd.in/gvZ7_pnp —
Practice C++ STL or Java Collections or data structure libraries in the language of your choice — essential for fast coding

If you are a beginner, DSA requires more than 3 months of active practice. I am omitting the details in this post

If you are looking for Java programs from coding interviews, I have shared many here. javarevisited.blogspot.com/2017/07/top-…

Top 50 Java Programs from Coding Interviews

A blog about Java, Programming, Algorithms, Data Structure, SQL, Linux, Database, Interview questions, and my personal…

javarevisited.blogspot.com

2. High Level Design (HLD)

1. Books: Start with Alex Xu’s Volumes 1 and 2 or an Educative subscription amazon.com/System-Design-Interview-insi…

System Design Interview - An insider's guide

System Design Interview - An insider's guide [Xu, Alex] on Amazon.com. FREE shipping on qualifying offers. System…

www.amazon.com

2. Videos: Good channel for basic concepts of System Design Interview — see here

Top 8 YouTube Channels for System Design Interview Preparation

These are the best YouTube channels you can subscribe to prepare for System Design Interviews

medium.com

3. Engage actively and try solving problems yourself

4. Mock interviews on Pramp, tyrExponent, and other platforms — medium.com/javarevisited/3-best-mock-in…

Interview prep for product, engineering, data science, and more - Exponent

Our courses help you prepare for interviews and excel at your job. Get advice from technical leads and product owners…

bit.ly

5. Practice System Design Problems in Leetcode style on Codemia -

Master System Design Interviews Through Active Practice

Passively learning system design does not work. Now you can practice system design problems like the way you practice…

codemia.io

2. Low Level Design (LLD)

If you are rust on LLD, you can start with reading:

1. Design Principles: Read “Head First Design Patterns” (read 2nd edition)

2. OOPs concepts should be crystal clear like Virtual Methods in C++ and Abstract class vs interface, overloading vs overriding, method hiding etc.

3. Questions: Awesome Low-Level Design — https://github.com/ashishps1/awesome-low-level-design by Ashish Pratap Singh of AlgoMaster newsletter, I highly recommend that one to programmers.

4. Practice question with a 45-minute timer

5. Solutions: Low-Level Design Playlist — lnkd.in/gkVZgK4b (Credits to Soumyajit Bhattacharyay)

4. CS Fundamentals

Learn from GateSmashers videos — lnkd.in/gs6m5RQb

Operating systems — see these courses

5. Behavioral

1. Use the STAR method (Situation, Task, Action, Result)

2. Keep each section concise: 4–5 sentences per section so that it can be covered in the given time during interviews

3. Prepare both a detailed and a short version of your answers

4. For resources, check free course Grokking the Behavioral Interview on Educative.

6. Company-specific Preparation

1. You can use Leetcode Premium to solve company-tagged problems

2. Explore tab in Leetcode Premium — lnkd.in/g3_dHef4

3. Practice using Leetcode’s Interview tab → Assessment → Select the company for phone or onsite rounds — lnkd.in/g5Tq5rZi

That’s all guys. I know its not easy to crack coding interview in this tough market but following this guide and preparing for all important topics mention in this article can improve your chances a lot.

I hope these tips help you in your preparation. Feel free to reach out if you have any questions or need guidance.

Good luck to everyone on their journey!

P. S. — Preparing for Java certification, grab my book “Grokking the Java Interview” for just $9.99 today.

P.S.S — I am also giving away free coupon to my Java 17 Certification Practice test on Udemy. You can join to test your Java skills and see where you are. If you find the practice test worth your time, please leave ratings and reviews, it will help me attract more readers.

And, if you struggle to solve System design problem, start practicing with Codemia

Master System Design Interviews Through Active Practice

Passively learning system design does not work. Now you can practice system design problems like the way you practice…

codemia.io

Grokking the Spring Boot Interview — 50% Off for Java Developers

2026-09-13T00:31:38.112-07:00

Hello guys, I am very excited to announce 50% discount for my book, Grokking the Spring Boot Interview and you can grab your copy for a special price of $10.99 on Gumroad. Ever since I talked about this book, after the success of my first book in 10 years, Grokking the Java Interview, I have received a lot of positive response which motivates me to work on this book and I really wish that my books on Java and Spring interviews will guide you to find the Java developer job you always wish for. If you have given any Java interviews recently then you may know that Java Interviews are notoriously tough to crack. Not because they ask impossible algorithmic questions like Google or Amazon but because of the vast nature of Java API, Frameworks and Libraries.

I Tried 50+ AI Courses on Udemy: Here Are My Top 10 Recommendations for 2027

2026-09-11T06:43:03.189-07:00

Hello guys, if you are not living under the rock in last 2 years then you may have noticed that Artificial Intelligence (AI) is transforming every major industry — — healthcare, finance, education, manufacturing, marketing, and beyond.

As we enter 2026, AI is no longer a buzzword but a must-have skill for developers, data professionals, analysts, and even business leaders.

But starting your AI journey can feel overwhelming: machine learning, neural networks, deep learning, computer vision, NLP — — where do you begin?

If you’re a complete beginner looking to learn Artificial Intelligence from scratch, Udemy offers some of the best beginner-friendly AI courses to help you get started.

Earlier, I have shared best ChatGPT courses, best Data Science courses and best Machine Learning courses and in this article, I am going to share best Udemy courses to learn Artificial Intelligence from Scratch for beginners in 2026.

These courses require no prior experience in AI and cover the foundational concepts, tools, and techniques you need to understand and build intelligent systems.

So what are we waiting for, let’s jump into the best Udemy courses to learn AI in 2026 and start your career in AI engineering or become an LLM Master and get that job you are looking.

10 Best Udemy courses to learn AI from Scratch in 2026

Here are the top 10 Udemy online Courses to Learn Artificial Intelligence for Beginners in 2026:

1. Artificial Intelligence A-Z 2026 : Agentic AI, Gen AI, and RL

This is one of Udemy’s most popular AI courses, teaching the entire pipeline of building an AI from scratch. It focuses on intuition rather than theory — — perfect for those intimidated by complex math.

What you’ll learn:

Building AI with Python
Q-learning and deep Q-learning
AI in games and simulations
Reinforcement learning with hands-on coding

This course is best for absolute beginners who prefer project-based learning over academic theory.

Here is the link to join this course— Artificial Intelligence A-Z 2026: Agentic AI, Gen AI, and RL

2. Artificial Intelligence for Business + ChatGPT Prize [2026]

Tailored for business professionals and non-technical learners, this course explains AI without any coding. It focuses on use cases, ethics, and the impact of AI in business and society.

It also teaches you ChatGPT, one of the most essential tool in this AI age.

Great for:

Entrepreneurs
Managers
Marketing and HR professionals

This course is best for non-coders who want to understand how to apply AI in their careers.

Here is the link to join this Udemy course — Artificial Intelligence for Business + ChatGPT Prize [2026]

3. Complete A.I. & Machine Learning, Data Science Bootcamp

This Udemy course introduces both machine learning and AI fundamentals using simplified explanations and visual learning. It’s great for learners who need a gentle start with strong conceptual clarity.

Topics include:

Linear regression, decision trees
AI vs. ML vs. Deep Learning
Python-based hands-on projects

This Udemy course is best for beginners looking to ease into ML and AI together.

Here is the link to join this AI course on Udemy— Complete A.I. & Machine Learning, Data Science Bootcamp

4. The AI Engineer Course 2026: Complete AI Engineer Bootcamp

Before diving into AI models, you need to know the core tools. This AI course on Udemy will teach you Python programming and libraries like NumPy and Pandas — — essential for every AI developer.

You’ll learn:

Python basics and functions
Data manipulation and visualization
Preparing datasets for machine learning

This course is also best for beginners with zero coding background who want to learn AI from the ground up.

Here is the link to join this AI Engineering course— The AI Engineer Course 2026: Complete AI Engineer Bootcamp

5. The Complete Artificial Intelligence and ChatGPT Course

If you want to use AI tools (rather than build them), this Udemy course is a practical guide to boost productivity with ChatGPT and other AI platforms. No programming skills required.

What’s covered:

Writing, coding, and designing using AI
Prompt engineering basics
Automation using AI tools like Notion AI, Canva AI, etc.

Best for: Creatives, freelancers, and professionals looking to use AI for content creation or daily productivity.

Here is the link to join this Udemy course — The Complete Artificial Intelligence and ChatGPT Course

6. The Beginner’s Guide to AI — — Unity 6 Compatible

If you’re into game development, this online course teaches how to use AI within Unity to build NPC behavior, pathfinding, and decision trees.

Learn how to:

Build intelligent enemies
Implement navigation and movement logic
Simulate decision making in games

Best for: Aspiring game developers who want to implement AI features in games.

Here is the link to join this AI course — — The Beginner’s Guide to AI — — Unity 6 Compatible

7. Intro to AI: A Beginner’s Guide to Artificial Intelligence

Want to explore neural networks and deep learning without overwhelming math? This Udemy course simplifies TensorFlow and Keras to help you start building neural networks fast.

Topics covered:

Deep learning fundamentals
CNNs and image classification
Working with real datasets

Best for: Beginners eager to get hands-on with deep learning frameworks.

Here is the link to join this online course — — Intro to AI: A Beginner’s Guide to Artificial Intelligence

8. ChatGPT/AI for Finance Professionals: Investing & Analysis

This niche AI course shows how to apply AI to financial datasets. You’ll build predictive models, understand time series, and apply neural nets to stock forecasting.

You’ll learn:

Regression, classification, and LSTMs
Real-world datasets and financial indicators
Risk modeling using AI tools

Best for: Finance professionals and data analysts looking to apply AI in their domain.

Here is the link to join this course — — ChatGPT/AI for Finance Professionals: Investing & Analysis

9. The Complete AI Guide: Learn ChatGPT, Generative AI & More

Interested in building smart assistants like Alexa or Google Assistant? This course is a great starting point to understand voice AI and NLP systems.

Covers:

Basics of speech recognition
Natural Language Processing (NLP)
Building chatbots and smart devices

Best for: Curious learners exploring voice-powered AI systems.

Here is the link to join this course — — The Complete AI Guide: Learn ChatGPT, Generative AI & More

10. Generative AI for Beginners: ChatGPT, DALL-E & More

Generative AI is the hottest trend in 2026. This beginner course introduces tools like ChatGPT, DALL-E, and Midjourney — — teaching how to use them creatively and responsibly.

You’ll learn:

Text, image, and code generation
Prompt engineering
Ethics and future of Generative AI

Best for: Beginners who want to explore creative and artistic AI tools.

Here is the link to join this Gen AI course — — Generative AI for Beginners: ChatGPT, DALL-E & More

Conclusion

That’s all about the 10 best Udemy courses to learn AI from scratch in 2026. The world of AI is vast but it doesn’t have to be intimidating. With the right beginner-friendly course, you can build a solid foundation in AI and gradually move toward advanced concepts like deep learning, generative models, or autonomous systems.

Udemy makes this journey approachable with affordable, self-paced courses taught by industry experts. Whether you’re a developer, a non-tech professional, a student, or just curious — — there’s a course here for you.

Pick one and start your AI journey today.

By the way, if you want to join multiple course on Udemy, its may be worth getting a Udemy Personal Plan, which will give instant access of more than 11,000 top quality Udemy courses for just $30 a month.

If you got a lot of time and want to save money, Udemy Personal Plan will be perfect for you.

Other AI and Cloud Computing Resources you may like

Thanks for reading this article so far. If you find these Udemy Courses for learning AI from scratch, including tools and libraries then please share with your friends and colleagues. If you have any questions or feedback, then please drop a note.

P. S. — — If you are keen to learn Midjourney and ChatGPT and looking for a free online training course to start with then you can also check out this free ChatGPT, Midjourney, Firefly, Bard, DALL-E, AI Crash course on Udemy. This course is completely free and you just need an Udemy account to join this course. You can also join this course for free with Udemy personal plan.

11 Best ChatGPT Online Courses for Beginners in 2026

Master Conversational AI with Top online Courses on ChatGPT for 2026. Also include best courses on Prompt Engineering…

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Top 10 Free Core Spring, Spring MVC, and Spring Boot Courses for Beginners in 2026 - Best of Lot

2026-09-08T08:02:34.118-07:00

Hello guys, if you want to learn Spring Framework, Spring MVC and Spring Boot then you are at the right place. In this post you will find the best free courses to learn Spring Framework, Spring MVC and Spring Boot in 2026. I have been sharing a lot of resources like books and courses recently and when I published my list of Top 5 courses to learn Spring and Hibernate, many of my readers asked about a similar list of free courses to learn Spring Framework like Core Spring, Spring MVC, Spring Security, and Spring Boot. That request was always back in my mind but I couldn't get time to put together a list, which I can share with you guys, but today is the day. In this list, I have compiled some of the best online free courses to learn Spring Framework from scratch, online at your own pace.

12 Best Free Udemy Courses to Learn Data Structure and Algorithms in Java, Python, and C++ in 2027 [UPDATED]

2026-09-07T08:00:33.110-07:00

Algorithms and Data Structure are two of the most fundamental and essential topics in Computer Science, which is used everywhere in software development. I firmly believe that a good knowledge of these two topics is also crucial to becoming a better programmer because a person who has a good understanding of algorithms and data structures can make thoughtful choices and write programs that can handle changes better and perform well. They are also essential to crack coding interviews at top tech companies like Google, Microsoft, Amazon, Facebook, and Apple, which emphasizes candidates' ability to use existing data structures and algorithms to solve complex problems they have never seen before.

Top 6 Online Course to learn from Java 9 to Java 26 in 2026 - Best of Lot

2026-09-05T21:57:38.326-07:00

Hello guys, even though Java 15 is available now, many developers are still on Java 8 and not really caught up with changes in Java 9, 10, 11, 12, 13, or Java 14. If you are also in the same boat and want to start with Java 9 features, you have come to the right place. This article will share some of the best online courses to learn changes in Java 9, 10, 11, and later add more classes for Java 12, 13, 14, and 15. These JDK releases are packed with powerful features like modules, API enhancements like factory methods for an immutable list, set, and map, some changes on stream API and optional class, new features on process API, etc.

6 Best Udemy Courses to Learn Agentic AI from Scratch in 2026

2026-09-05T06:56:02.357-07:00

credit — Pault Iustzin of LLM Engineer’sHandbook

Hello guys, Agentic AI is quickly becoming one of the most important shifts in modern software development. Instead of single-prompt AI systems, we’re now building autonomous agents that can plan, reason, use tools, collaborate with other agents, and execute multi-step tasks reliably.

In 2026, knowing how to build AI agents with Python is no longer optional for AI engineers, backend developers, or full-stack engineers working with AI-driven products.

Top 10 Free Courses for Java Developers to Learn Online in 2026 - Best of Lot

2026-09-04T07:10:44.213-07:00

Hello guys, the Internet is full of useful resources, and no matter what you want to learn, there is something useful available for free. You just need to commit your time and effort. But at the same time, it's challenging to choose from the massive sea of free tutorials and courses on the internet. If you are not careful, you will spend most of your time browsing and changing classes without learning anything. That's where a curated list helps. Curation is my hobby and passion. I love to read books and courses which allows me to curate useful resources and share them with you guys.

8 Free Linux Courses for Programmers and IT Professionals to Learn Online [2026]

2026-09-03T06:27:31.104-07:00

Linux is one of the most popular operating systems to run server-side applications. I have seen almost all Java applications running on Linux, barring a couple of them, which run on Windows as a service. If you take out standalone apps like IDEs or tools, most of the real-world Java applications run on Linux, like payment gateways, trading systems, and other financial applications. That's why it's essential for any programmer, IT professional, or developer to learn and understand Linux, both the operating system, as well as the command line.

Top 10 Books Every Java Developers Must Read

2026-09-02T07:08:55.267-07:00

Hello guys, If you are a Java developer and wondering what to read, then you have come to the right place. In this article, I will share 10 books on Java, Spring, and related technology a Java developer can read. I have included books for both experienced Java developer who is more inclined to learn about architecture stuff, developing for Cloud, Microservice, Java 9 to Java 21 features, and Spring 6 features and thinking of learning Kotlin to improve their productivity. Still, I have not forgotten junior and less experienced Java developers or some thinking of starting their journey into the Java world

Top 5 Scala and Functional Programming Books and Courses in 2026 [Best of Lot]

2026-09-01T06:06:38.659-07:00

Hello guys, if you are a Java developer who is interested in learning Scala or someone starting with Scala afresh and looking for some awesome Scala resources like books, courses, and tutorials then you have come to the right place. In the past, I have shared some free Scala courses and the best Scala Courses to start with and today, I will share some of the best books to learn Scala and Functional Programming, particularly Java developers. While in this age of online courses, fewer and fewer people are using books to learn a new technology or skill but in my opinion, both books and courses have different purposes. I have taken many online courses and read even more books so I can tell that books are almost always more in-depth and provide comprehensive coverage than courses.

Top 5 Free JavaScript Books for Beginners in 2026 - Download PDF or Read Online

2026-08-31T08:24:28.399-07:00

The internet is full of good things, and one of them is free eBooks and PDF. Programmers can almost run anything by these free books. Earlier I have shared some of the free JavaScript tutorials, and in this article, I am going to share 5 good books to learn JavaScript, which are open to read online or allow you to download PDF for offline reading. JavaScript is probably another language I recommend someone who knows Java, Why? Because it's really ubiquitous. There is almost no website that is not using JavaScript in one or another format.

Top 10 Algorithms books Every Programmer Should Read in 2026

2026-08-29T21:57:47.684-07:00

Algorithms are language agnostic, and any programmer worth their salt should be able to convert them to code in their programming language of choice. Unfortunately, I have come across several programmers who are REALLY good at programming languages like Java or Python, like know minor details of API and language intricacies but have very poor knowledge of the fundamentals of Algorithms and Data Structures. Just ask them to implement any popular sorting algorithms like quicksort or merge sort, and they will fall apart. If you expect them to know more advanced and sophisticated algorithms like String processing algorithms, graph algorithms, tree traversal, or greedy algorithms, be ready to check on Interviews; otherwise, you might end up with some surprises.

Top 10 REST API, Microservices, and RESTful Web Services Book for Java Web Developers (2026)

2026-08-28T23:36:22.100-07:00

In recent years, REST has become the standard style for developing web services, also known as RESTful Web Services. These web services take advantage of REST principles, which leverages all goodness of HTTP to provide scalable and robust web services. As a Java Web developer, it's high time that you get familiar with the REST concepts and the REST style of developing web services in Java, also known as RESTful web services, and nothing is better than to start with a good book. I often receive a request about which book should I read to learn REST? Or what are some best books to learn to develop RESTful Web services in Java, etc.? In this article, I will suggest some books which will teach you both designing a REST API and developing RESTful web services in Java.

Top 6 Design Patterns Books for Java Developers in 2026 - Best of Lot

2026-08-26T19:35:07.897-07:00

Design patterns are an essential topic for object-oriented programmers, like Java and C++ developers. It becomes even more important as your experience grows because everybody starts expecting a lot more from you in terms of writing quality code. I often receive emails from intermediate and senior Java developers about progressing to the next level, like how to become Tech Lead, Team Lead, or software architect; knowledge of design patterns plays an important role in taking more technical responsibility. While the GoF book is the bible for object-oriented design patterns, in my opinion, it is a bit too dry and academic.

Top 5 System Design and Coding Interview Substack Newsletters in 2026

2026-08-25T18:57:53.174-07:00

Hello guys, if you want to learn System design then there are many ways you can start. For example, you can start with reading a System Design book, or joining an online course, but if you want to keep yourself updated and believe in constant learning then there is no better way then subscribing to a System Design Newsletter. When it comes to System design newsletter you can find many newsletter online, just open your LinkedIn and you will see a post popping here or there but you cannot subscribe to all of them as it doesn't make sense. A better strategy is to subscribe only the best newsletters so that you doesn't get overwhelmed but also keep learning useful concepts and new tech trends.

Book Review - Is Effective Java 3rd Edition Really Worth It?

2026-08-24T19:49:50.997-07:00

Hello guys, you might have heard about Effective Java, one of the most recommended books for Java programmers. This is one of those books which every Java developer wants to read because it will not teach you syntax but how and when to use a particular feature. After the huge success of Effective Java 1st Edition and 2nd Edition, the 3rd edition of Effective Java released a couple of years ago. After 10 years of long wait by Java programmers from all over the world, finally, an updated version of, probably, the most popular Java book on the planet is released and I am going to talk about this new version of Effective Java, I mean Effective Java 3rd Edition in this article and share my thought that why its a must-read book for every Java developer around the world.

Top 5 Books to learn Scrum, Sprint, and Agile in 2026 - Best of Lot

2026-08-22T23:58:18.591-07:00

Hello guys, Are you a senior Java developer who wants to become a Scrum Master to advance in your career? Well, at this time, a person needs to wear many hats for job security. You not only have to perform your duty as a Software developer, I mean coding and debugging, but also need to support your application as Level 2 or Level 3 Support. You also need to wear a project management or product development hat, which involves talking to stakeholders and clients. If this is not enough, you may need to play the role of Scrum master in your daily Scrum meeting and drive your Sprint review and Sprint planning meeting. To do all these, you must understand Agile methodologies and how the process works.

17 Free Java Programing Books for Beginners - download, pdf and HTML

2026-08-22T02:33:49.160-07:00

Every Java programmer loves free eBooks on Java, don't you? When I shared my collection of top 10 Java programming books, one of my readers asked me to share some free Java books as well. Doing a quick search on the internet reveals lots of free books, resources, and tutorials to learn Java. I have chosen some of the good Java books, which are FREE, available for download or you can read it online in HTML or PDF format. These books are an excellent resource for any Java beginners, as well as an experienced programmer, and since they are free, it makes absolute sense to have a look on this before buying any other book in Java.

Top 6 Books to Improve Coding and Programming Skills in 2026 - Must Read, Best of Lot

2026-08-20T07:27:03.124-07:00

Learning a Programming language, like Java, Python, or C++ is easy, but learning to write good code is not. Writing good code is more Art than Science and also an important differentiating factor between an average programmer vs. a good programmer. Since most of the programmers often look for inspiration and resources to improve their coding skill, I decided to share some of the good books which can help them to improve their coding. Since many universities, colleges, and training courses only teach programming languages but not the art of coding, it still remains one of the self-learned skills which many programmers acquired either in Job or working on real-world projects.

Top 5 Resources to become a Certified Spring Developer Professional in 2026

2026-08-19T08:10:55.521-07:00

Ever since Pivotal has announced that Spring training is not mandatory for becoming a Certified Spring developer (now VMware EDU-1202), more and more experienced Java programmers who have been using Spring for years are preparing for this certification exam. This is obvious because the expensive Spring training, which cost around 32000 USD in the USA and most Western nations and about 50,000 INR in India, was the biggest hurdle in getting Spring certified and becoming a certified Spring professional.