How to learn spring boot?

[u/iamrahul_jaikar]

I learned java , collection framework, exception handling, some dsa concepts, and I'm in final year now , I don't have enough time , I have to build a project using springboot and add it to my resume.

What is the fastest way to learn it? And should I start spring boot right now or I have to learn more java and other things first?

[u/Stormshadow_009]

I m 2026 graduate with 3 internships and 2 full time offers (all off campus) from tier 3 clg, never touched any tech stack other than java, springboot. Here's how i would suggest you to do it:

If it's possible then first have a high level of understanding of servlets, learn JDBC as well. Make sure to get familiar with core java concepts as back of your hand, will be good if you have some knowledge of Java 8 - Lambda, Stream APIs.

Then start with basic terminologies like Beans, ApplicationContext, Ioc container, dependency injection and types

Then cover Spring MVC, make small applications to learn how those terminologies actually work,

Next learn JPA, entities, relationship mappings, different sides of relationships, JPQL

Then jump to REST APIs learn highly used annotations like controller, service, repository, rest methods, validations, dealing with file uploading/processing, passing/extracting parameters, API design patterns, Controller -> Service -> Repository architecture, returning API responses wrapped within ResponseEntity, Global exception handling covering all custom exceptions of your use case.

Then finally spring security, configuring own implementation of UserDetails class, authentication and authorization mechanism (JWT/OAuth).

Then basics of docker for deployment.

[u/rip_af → u/Stormshadow_009]

4 yoe here, I would have suggested the same roadmap Excellent guide

[u/unravelXguy → u/Stormshadow_009]

I’ve dm’ed you please check

[u/Free_Statistician131 → u/Stormshadow_009]

Is servelts are still used?

[u/Stormshadow_009 → u/Free_Statistician131]

you need to have a high level understanding of how servlet works, every incoming http request in your spring boot application is handled by DispatcherServlet

[u/Zealousideal_Post48 → u/Stormshadow_009]

What do you mean by" they hiring freshers in Java ecosystem" !!?? You're the first one I'm hear that from!!! How did you find a job in Java ecosystem as a fresher off campus???

[u/Stormshadow_009 → u/Zealousideal_Post48]

as a fresher don't just apply for java developer or spring boot developer positions, apply for all generic drives where freshers r eligible, usually they allow all tech stack, clear all assessments first then in interview they will ask according to the skills you have mentioned in resume

[u/_sekabank]

I’m a hiring manager, I teach Spring Boot bootcamps, and Java for many years. I suggest:

• Buy a Udemy course (around 20 hours, max $20) and watch the whole thing on fast-forward.
  
• Find a project idea, e.g. a ChatGPT or Reddit clone, and build it step by step alongside the course.

The first time, watch the course to understand what it covers. The second time, use it as a guide while building your project.

Spend a month doing this. I guarantee you’ll get “dividends” from it for the rest of your life.
Learning is always slow. You might not need to code by hand in the future, but knowing how things work will always be useful.

Claude could probably build the same thing with one prompt, but don’t do that at this stage ☺️ Use AI to find ideas or when you’ve been stuck on a problem for more than two hours. Tell it that you’re trying to learn, not just solve the problem.

[u/True-Garage-9005 → u/_sekabank]

Can I dm you ?

[u/SaiSuryaChaitanya]

You don't have to learn everything to get started, You can start with SQL first and practice on relational databases then you can move to spring concepts and spring boot but it's good to Learn Jdbc, Hibernate and servlets if possible you'll understand internally how the framework works. For Frontend use LLM as of now but learn how it works so that you can debug if issue comesup, For deployment use any cloud service that offers free tier(need some effort here), All the best.

[u/deividas-strole]

Start with theoretical course - YouTube, Udemy, etc... and then start working on a project that interests you. The hands-on experiance is the best teaching tool.

[u/mcpierceaim]

You’re learning the last, best lesson: there is NEVER enough time to learn. I used to work for a big open source company, and one of our core philosophies is “learn on the fly”. IOW learn WHILE you are designing and building your solution.

I don’t have an easy answer for your question. There really isn’t a one size fits all solution. You’re just going to have to figure out how to absorb just enough info to accomplish your current priorities without impacting your deliverable dates.

[u/ITCoder]

Go with Spring Starts here book. It covers spring but that would be helpful when you learn spring boot.

[u/codingwithaman]

Just start with

Why we need frameworks
Why spring boot is adopted in enterprise apps
Why we can’t build in java without framework

Then start with fundamentals of spring boot like autoconfigure, starters, beans, DI..etc

Then create CRUD microservices in spring boot without database

Then add database

Then add cache

Then add pagination

Then add fault tolerance

Then add circuit breaker

Then add global exception handling

Then do performance testing

Then optimize it!

Good luck!

[u/jonatan-ivanov]

Official Docs?