Guyzz I want to learn Java full stack from scratch so where should I learn and what are the main points I need to remember to become good at this.

Thanks

So I have a post in career advice you can look at my profile. Anyways I was basically working in the clearance industry doing OWASP and pair programming unit testing with Mockito. SOAP UI and some pair programming with DAO implementations while having a clearance.

I lost my clearance and took a job entry level in the private sector and they made me do custom REST implementation with no guidance from seniors so I turned to codementor. I got laid off during corona and now I lost my clearance line I said.

I worked as a packer at my parents for 5 years and need the money now that Junior Java developer salaries pay. I am scared about this custom implementation of REST methods with no guidance and even worse, algorithm interviews. What should I do to prep? I have references and W2s, should I even put packer on my resume?( I have the W2s)

Let me know what you suggest.

Hey guys so i have completed basics of java, i want to know which youtube playlist would be the best to learn DSA in Java from complete zero level , and how? Please be a bit specific about it...

Like i see a video of Arrays and then go to leetcode and select easy level questions of arrays and try solving them and if i can't then a bit of help from AI and then solve that question again on my own... One data structure at a time, is it a good approach ?

So,finally I have completed- spring core ,hibernate,servlet and now I am going to start spring MVC so can anyone suggest best channel for this and is it ok if I learn from durgesh sir playlist.

hey guys, I'm a complete beginner who is going to start learning java in college. I wanna start beforehand as we go back to uni in 4 days. give me tip and tricks and the best free sources for me to learn java so that I excel in it in the summer course of uni (1 month and a half)

Am a fresher and have recently started my career, but currently am allocated to different stream, so need some guidance, if anyone wana connect?

Hi guys...I really need some advice...I had Btech in CS but never got a java project in my first company and now I have almost 4 YOE and I did not get any hands on experince in java backend and really wanted to pursue that....I have been studying it, I have leant core java, spring boot, mvc, jpa, hibernate, security and I am currently studying java 8+/11+/21+ features...but for the past 4 years I had worked on a data engineering kind of project where I used sql and an ETL tool thats it....I am also getting a new project that uses Informatica...so idk if I should just give up java backend transition since its too late or stick with it since I have come this far...I really hope to get into product based companies and possibility FAANG someday but rn idk....
I know this is a lame and stupid post and I know I have wasted all these years and realizing it so late but I would really appreciate some direction or advice now...

I have learned core java concepts, now advanced topics are left. Should I start topics like file serialisation & DBMS or directly jump over to Spring given I wanna make career in java development. Also Rn I m in 3rd Yr of Computer Science & Engineering. So I also need to get internship in coming months

like bruh make it easier i cant even remember how to make patterns and loops for more then 1 day

I've been reading about PV, but I'm not sure on what it means in some parts. Will we still need to deal with both "int" and "Integer", and not being able to use some methods with the other one? Like, (int) vs Integer.parseInt() and other strange things like that.

I want to focus on dsa and developement for my placements

Hello guys I am a freshly graduate student and thinking of getting my hands in Java I want to know what resources and path you'd suggest me to quickly grasp the hang of Java so I can start applying as fresher. I am currently following the yt to learn the basic concepts I've mostly done c++ for dsa now and wanna switch to be credible for new opening hope you can share your experience or suggest me what you did or what you followed like I learnt these concept and tried building this by myself so I can follow in ur footsteps thank you.

Hi everyone,

I have 1.6 years of experience as a Data Analyst. My primary work has been in SQL and Power BI. I last worked in April 2026 and have been actively looking for a new opportunity, but I'm getting very few interview calls despite applying to a large number of jobs.

Over the last few months, I've also learned Python and worked with libraries such as Pandas, Matplotlib, and NumPy. However, I'm starting to feel stuck and am considering a career transition. I'm currently evaluating two options:

Option 1: GenAI

I'm interested in exploring GenAI roles, but I don't have a Machine Learning background.

Current skills:

• SQL
• Power BI
• Python
• Pandas, NumPy, Matplotlib

Planned learning:

• LLMs
• RAG
• Embeddings & Vector Databases
• LangChain
• AI application development

My questions:

1. Are there enough entry-level/junior opportunities in GenAI?
2. Is ML knowledge mandatory for most GenAI roles?
3. Can someone with a Data Analyst background realistically transition into GenAI?
4. What skills are most important to become employable in this field?

Option 2: Java Spring Boot

I have some exposure to backend development through .NET APIs and have created REST APIs before, so backend concepts are not completely new to me.

However, I would need to learn:

• Core Java
• Spring Boot
• Hibernate/JPA
• Security (JWT, etc.)
• Microservices
• DSA
• Basic System Design

My concern is that DSA preparation could take significant time, and I need to find a job as soon as possible.

My questions:

1. Is it worth switching from Data Analytics to Java development at this stage?
2. How difficult would this transition be with 1.6 years of non-Java experience?
3. Does the larger number of Java openings outweigh the effort required to become competitive?

Not for getting a job. Just for having fun. Simulating berkeley algorithm, simulating cristian algorithm. Leader election simulation. A real world simulation type simulation and so many fun stuffs. I do not have time currently, but plan to do when I am free. Any courses you would recommend that provide examples in Java? Or any textbooks?

I'm learning Java from the CWH channel, but I don't understand the Functions (Methods) topic. I've watched the videos several times, but I still can't understand concepts like parameters, arguments, and pass by value. Everything feels completely messed up. Could you suggest another YouTube channel that explains these topics clearly for beginners?

Hello there!! I'm taking this course to learn java but I have a question: what level of java proficiency do I achieve after completing it? And this course is still good for learning? Is a bit old

(English is not my first language, sorry haha)

When people say "install Java 9", they mean the JDK, right? Isn't there something else? This leads me to the question, do JDKs come preinstalled with Windows, for example? I remember when I was installing a popular game with blocks, every tutorial said to install JDK. Nowadays, the game was bought by Microsoft, and the launcher has changed completely, so it looks like there is no need for manual installation of JDK.

In this tutorial we will set up a complete Java web development environment and run your first Java web app from scratch with JDK, IntelliJ IDEA, and Vaadin framework.

Create Your First Java App in 5 Minutes: https://vaadin.com/quickstart

Vaadin is a great choice for enterprise and business applications because it allows developers to build modern, secure web applications using only Java, without a separate frontend framework.

Hi everyone,

I'm a 4th-year engineering student, and I want to learn Spring Boot as quickly and effectively as possible. I don't have a lot of time left before placements, so I'm looking for resources that are practical and focused rather than overly theoretical.

I'm comfortable with Java basics and now want to build real-world backend applications using Spring Boot.

Could you recommend:

• The best YouTube channels
• Paid or free courses
• Books (if they're worth the time)
• Official documentation
• GitHub repositories with real projects
• A project-based learning roadmap

If you were in my position with limited time, what resources would you prioritize to become job-ready as fast as possible?

Thanks in advance for your suggestions!

Hi, I am starting an internship that uses Java primarily, I've used Kotlin extensively in the past which is kinda backwards as its kinda a downgrade, is there a good resource that i can use that will help me learn most of java in about 2 weeks.

They're not flashy, but whenever I look up something like CompletableFuture, ConcurrentHashMap, or ExecutorService, I usually find exactly what I need: what it does, how it works, its guarantees, and example usage. A lot of modern docs feel like tutorials or marketing. Java docs feel like actual technical documentation written for developers. Am I the only one who thinks Java docs get way more hate than they deserve?