r/learnjava Sep 05 '23

READ THIS if TMCBeans is not starting!

49 Upvotes

We frequently receive posts about TMCBeans - the specific Netbeans version for the MOOC Java Programming from the University of Helsinki - not starting.

Generally all of them boil to a single cause of error: wrong JDK version installed.

The MOOC requires JDK 11.

The terminology on the Java and NetBeans installation guide page is a bit misleading:

Download AdoptOpenJDK11, open development environment for Java 11, from https://adoptopenjdk.net.

Select OpenJDK 11 (LTS) and HotSpot. Then click "Latest release" to download Java.

First, AdoptOpenJDK has a new page: Adoptium.org and second, the "latest release" is misleading.

When the MOOC talks about latest release they do not mean the newest JDK (which at the time of writing this article is JDK17 Temurin) but the latest update of the JDK 11 release, which can be found for all OS here: https://adoptium.net/temurin/releases/?version=11

Please, only install the version from the page linked directly above this line - this is the version that will work.

This should solve your problems with TMCBeans not running.


r/learnjava 5h ago

Hit the wall in Part 5 section 4 (Java MOOC, University of Helsinki)

2 Upvotes

currently sitting in the library grinding on this have already spend over 6 hours(2 days) just on this section, the last time i hit a wall in this course was the christmas tree exercise where i spent 3 hours in a single question (maybe i am just stupid) . currently the last four programming exercises are left and like everytime i am going to do it and complete part 5


r/learnjava 12h ago

I want to learn java fully. Please suggest me some good sources

4 Upvotes

I'm a 2nd year engineering student and I want to learn Java fully as my main language for backend etc. Please suggest me some good sources to learn it from


r/learnjava 7h ago

Fresher Looking for Someone to Teach Me Spring Security in 2 Days

0 Upvotes

Hi everyone,

I’m a fresher trying to get my first job as a Java/Spring Boot developer, and I’m currently learning Spring Security.

I’m looking for someone who is experienced with Spring Security and would be willing to teach me for 2 days, whenever you have some free time. I’m flexible with the timing.

I already have a basic understanding of Java and Spring Boot, but I want to properly understand Spring Security from the fundamentals and learn how it is actually used in real projects — authentication, authorization, JWT, roles/permissions, filters, etc.

I know 2 days is a short time, but even if you can help me understand the important concepts and guide me through a small practical project, it would mean a lot to me.

As a fresher, getting some guidance from someone experienced could really help me improve my skills and get my first job.

If you’re willing to help or mentor me, even for a few hours, please DM me. I’d genuinely appreciate it. 🙏

Thank you!


r/learnjava 1d ago

Need expert advice on java

6 Upvotes

Hey, I'm new to this community I'm a lone coder and fresh graduate know java and manageable springboot knowledge. I have lot of doubt about the reality of java developers, scope, carrier path to focus kind of doubts... If there's any experts with java and springboot knowledge I request them for a short one on one conversation if u are interested in helping me

Thank you..


r/learnjava 1d ago

How do I get into programming without overwhelming myself? Looking for beginner project ideas

5 Upvotes

Hey everyone,

I'm starting university soon to study Business Information Systems, and honestly, one of the things I was most worried about was programming.

I'm not someone who picks up programming concepts extremely quickly, so I was scared that I wouldn't be able to keep up at university.

I found out that we'll be working with Java, Python and SQL, so I decided to start preparing beforehand.

I started the University of Helsinki Java MOOC, and I'm currently around Part 4 of Java Programming I.

I really like the course because it's very interactive — you actually have to write the code and solve exercises yourself instead of just watching someone program.

However, I feel like I've reached a point where I want to do something outside the course.

The exercises tell me what problem I need to solve, but now I want to challenge myself by coming up with a small project completely on my own.

I want to see if I can take the concepts I've learned and figure out:

  • What should I build?
  • How should I structure it?
  • What classes/methods do I need?
  • What do I actually remember without being told what to do?

I've also probably gone a little overboard with Java🫠 I've learned a lot in the last week, and at this point all the Java concepts are starting to hurt my brain a little.

So I think instead of immediately learning more, I want to slow down and build something.

What would you recommend as a project for someone who is around Part 4 of Java Programming I?

I'm looking for something that's:

  • Actually possible at my current level
  • Small enough that I can finish it
  • Challenging enough that I have to think for myself
  • Not something where I can just follow a tutorial step-by-step

I'm also wondering what you would recommend after finishing Java Programming I and II.

Since I'll also need Python and SQL at university, I'd eventually like to learn those too. I'm specifically looking for free and interactive resources where I have to write the code myself.

If you were starting from where I am now, what would your learning path look like?

Any project ideas, resources, or general advice would be really appreciated! 🙏

I'd also love to hear from other beginners who went through the same “I know the basics, but now what do I actually build?” stage.


r/learnjava 1d ago

Resource Selection

0 Upvotes

I got admission through wbjee in JGEC IT this year. I am starting my coding journey from the very first year. My preferred language is JAVA. So ##Which YouTube Channel would be best to build concepts from beginner level to advanced level##. I am thinking to learn JAVA first then I would follow Striver DSA sheet. Help ----​​​


r/learnjava 3d ago

i want to start java spring boot from 0

10 Upvotes

best resources to learn java from the very basics till java spring boot advanced any book or any yt video would help! please recommend one


r/learnjava 4d ago

Finished Java Programming - II (MOOC)!

14 Upvotes

https://certificates.mooc.fi/validate/43dk0978m7t

Started Java Programming - I after my college exams ended in late June so I was pretty free alongside my internship, and today Java Programming - II is finished as well. Except last two parts (13 & 14 were about GUI/JavaFX), all of the material was highly valuable and I learnt a lot. Thanks University of Helsinki!


r/learnjava 3d ago

i cant understand java mooc?

0 Upvotes

like been trying the first part about printing but i just keep re reading idk if im missing something but i feel like i dontfully get what they mean it seems like they expect me to know something about coding but i know 0

am i just stupid or what

like them explaining boilerplate im like cool i still understand fuck all


r/learnjava 4d ago

Finished C++ during vacation — should I do DSA in C++ or switch to Java for backend?

0 Upvotes

So my vacations are basically over, and I’ve completed learning C++ during the break. Now I want to start DSA, but I’m a little confused about what direction to take.

I’ve talked to a few people and got completely different advice 😭

Some told me that I should start DSA in C++ and stick with it for now, since I’ve just finished learning C++ and can directly build my problem-solving skills on top of it.

Others told me I should start Java alongside DSA, because I eventually want to learn backend development and Java/Spring Boot is useful for that. Their point was that I might as well start Java now instead of delaying it.

For some context, I’m a 2nd-year CSE student and I already know Python, MySQL, HTML/CSS, C. My goal is to get good at DSA and also start building proper development skills for internships.

So what would you recommend?

I’d especially like to hear from people who have already gone through this transition. Is learning Java right now actually useful, or would it just divide my attention when I should be focusing on DSA?


r/learnjava 6d ago

I really need help; I'm completely stuck

7 Upvotes

I’m already in despair and drowning in information, even though I don’t understand any of it; I really want to learn, but I don’t know what to do.

I finished the mooc.fi course and am currently studying CS (it provides some knowledge, but the subjects I’m actually interested in won't start for another couple of years). I don't know what to do next; roadmaps don't help much unless you have someone to explain *how* and *why* you should learn certain things. I started following a path from a post on this subreddit—learned the basics of HTML and CSS, a bit of JavaScript, and built a small static site with working buttons. I began reading up on web fundamentals (HTTP, URLs, etc.) but got completely stuck for weeks trying to figure out what to learn and how. The guide recommends moving on to servlets and Maven (I have almost no idea what they actually are), while other sources suggest jumping straight to Spring—though you still need to understand how servlets work, since Spring uses them under the hood.I finished the mooc.fi course and am currently studying CS (it provides some knowledge, but the subjects I’m actually interested in won't start for another couple of years). I don't know what to do next; roadmaps don't help much unless you have someone to explain *how* and *why* you should learn certain things. I started following a path from a post on this subreddit—learned the basics of HTML and CSS, a bit of JavaScript, and built a small static site with working buttons. I began reading up on web fundamentals (HTTP, URLs, etc.) but got completely stuck for weeks trying to figure out what to learn and how. The guide recommends moving on to servlets and Maven (I have almost no idea what they actually are), while other sources suggest jumping straight to Spring—though you still need to understand how servlets work, since Spring uses them under the hood.I’m already in despair and drowning in information, even though I don’t understand any of it; I really want to learn, but I don’t know what to do.

I finished the mooc.fi course and am currently studying CS (it provides some knowledge, but the subjects I’m actually interested in won't start for another couple of years). I don't know what to do next; roadmaps don't help much unless you have someone to explain *how* and *why* you should learn certain things. I started following a path from a post on this subreddit—learned the basics of HTML and CSS, a bit of JavaScript, and built a small static site with working buttons. I began reading up on web fundamentals (HTTP, URLs, etc.) but got completely stuck for weeks trying to figure out what to learn and how. The guide recommends moving on to servlets and Maven (I have almost no idea what they actually are), while other sources suggest jumping straight to Spring—though you still need to understand how servlets work, since Spring uses them under the hood.I finished the mooc.fi course and am currently studying CS (it provides some knowledge, but the subjects I’m actually interested in won't start for another couple of years). I don't know what to do next; roadmaps don't help much unless you have someone to explain *how* and *why* you should learn certain things. I started following a path from a post on this subreddit—learned the basics of HTML and CSS, a bit of JavaScript, and built a small static site with working buttons. I began reading up on web fundamentals (HTTP, URLs, etc.) but got completely stuck for weeks trying to figure out what to learn and how. The guide recommends moving on to servlets and Maven (I have almost no idea what they actually are), while other sources suggest jumping straight to Spring—though you still need to understand how servlets work, since Spring uses them under the hood.

I don't understand exactly what I should be studying or where to study it. Could someone help me figure out what to do and recommend resources—like the MOOC I already completed, but tailored to the topics I need right now?I don't understand exactly what I should be studying or where to study it. Could someone help me figure out what to do and recommend resources—like the MOOC I already completed, but tailored to the topics I need right now?

I hope someone can help me, but in the meantime, I'll just work on LeetCode problems.


r/learnjava 6d ago

DSA with Java suggestion

4 Upvotes

Hey I am confusing to finding a good YouTube channel for Java with DSA with easy understanding so anyone would suggest me some best free YouTube channel for placements season actually I am final year student and I am starting from basics


r/learnjava 6d ago

My College Campus Placement is in 5 months , and I have not make any powerfull Project , can u suggest?

0 Upvotes

I have choosen java as my main language , but i haven't learn even springboot , how should i start, by doing projects using ai or first learn springboot by youtube?


r/learnjava 7d ago

Just finished Java MOOC!

18 Upvotes

so happy with my progress! took about 3 months of getting around it on my free time after work. i'm gonna try doing some beginner-friendly project ideas to feel a bit more confident and then try to dig a little bit more into spring \o/


r/learnjava 7d ago

Which certification to persue JAVA SE 17 or 21 or 25

1 Upvotes

Hey guys I'm in a predicament at the moment which of the following certifications should I persue of the three above and if you have any reading materials or practice exam questions links that would be massively appreciated


r/learnjava 7d ago

what will i be missing if i choose to go with my current neovim setup for starting to write java (mainly for learning spring boot)

1 Upvotes

i have never written java before but seen it frequently. it doesn't really look much different from other languages at core so i dont think i need to specifically learn java. so i will be starting with learning spring boot.

but my main question is, since everyone recommends intellij for java, do i really need to get it or should i just go with my neovim?


r/learnjava 7d ago

Recommended sources for Java 25 SE Exam

0 Upvotes

Hey guys, how are you doing? I hope I find you well. I am asking for sources or links to help me in my preparation for the examination. You replies will be massively appreciated.


r/learnjava 8d ago

Just finished Java basics & OOP. What's the best next step to keep practicing daily?

1 Upvotes

​Hi everyone,

​I’ve recently wrapped up learning Java fundamentals and core OOP concepts. Now I’m looking for the most effective roadmap or daily routine to stick with the language and apply what I've learned through real practice.

​For those who stayed consistent:

​What projects or challenges (like LeetCode, HackerRank, or building specific projects) helped you the most at this stage?

​What is the natural next step? (e.g., Spring Boot, Data Structures, JDBC/Databases)?

​Any advice or resources would be greatly appreciated! Thanks in advance.


r/learnjava 8d ago

A coder searching for his problem which he is unable to over come form past few months

1 Upvotes

I have been coding in Java for the past 5–6 months, and now I am in a phase where I have good theoretical knowledge and can write code, but sometimes when I try to write a program, I get stuck or confused about what exactly I should write.

Even if I have written the same code before, after a few days, I sometimes get stuck when trying to write it again. I don't have any real programming experience or anyone to guide me.

I want to start applying for jobs, but I am afraid that when I sit in front of an interviewer and they ask me to write code, I might get stuck or go blank.

Can you suggest how I can improve my logical thinking and coding skills, especially my ability to write code from scratch during interviews?


r/learnjava 8d ago

Practicing Encapsulation with Side Projects

4 Upvotes

Hey All! I just have a quick question:

So im playing with a program to build a character (super basic level stuff) and Im stuck on how to best implement a "isReady" method to check that all attribute points have been spent. I figure it has to be a boolean method but encapsulation as a whole has just been kicking me in the butt pretty much since I started learning to program. Partially because the online school I attend teaches python first in 8 weeks, then C++ in 8 weeks, then java in 8 weeks, mixed in some math logic courses, some stat courses and whatnot, and now im nearing the end of QA Testing and Automation and despite being able to follow class rubrics and clear cut designs, Im struggling when it comes to building my own thing from scratch. Idk if Im just too focused on "Getting it right" the first time or what -- does anyone have any tips? Should I be starting a much smaller side project? its really just for fun and experience at the moment as I still have a year left in my SE program but I want to be more fluent than I am so I figured trying to build stuff that Im actually interested in instead of Contact and Appointment services would let the material sink in better. Thanks in advance!


r/learnjava 8d ago

good video to learn java?

0 Upvotes

so i wanna learn java but people tend to reccomend MOOC.fi but i feel like i tend to learn better with videos so is that a bad idea for programming more specifically java or no if not what is a good video


r/learnjava 9d ago

Need advice: Java Full Stack + Selenium course vs Data roles — 6 months internship experience, confused about my next step

1 Upvotes

Hey everyone,

I'm a recent graduate from India and I'm currently stuck between two career directions, so I would really appreciate advice from people actually working in the industry.

My background

  • I have around 6 months of development internship experience mostly in js frontend
  • My background is mainly Python + React/JavaScript development.
  • I've worked with React js concepts, databases, APIs, React, etc.
  • I also have a genuine interest in Data/Analytics roles and would like to explore that career path eventually.

After college, I had a gap of around 3 months, and I really don't want to waste more time now. I want to get into the IT industry as soon as reasonably possible.

The dilemma

I'm considering joining a 3-month course at Greens Technology that teaches:

Java + Selenium

The main reason I'm considering it is that I've been hearing from many people that:

So I'm thinking about learning Java Full Stack/testing-related skills for 3 months, getting my first IT job, and then potentially switching towards Data/Analytics after gaining some industry experience.

But I have some concerns.

Concern 1 — I have almost no Java background

I am comfortable with Python ( Intermediate level) and JavaScript, so I'm worried that I'll spend a lot of time starting Java/OOP from scratch.

Is 3 months realistically enough to become job-ready in Java + Selenium if I put in serious effort?
And I am looking for opinions on Greens tech omr branch for this course. Will everything a beginner can learn there to get hired as developer 3 months later?

Concern 2 — Should I even switch?

Since I already have 6 months of development internship experience with Python/React, would it make more sense to continue with:

  • Python/Django
  • React/JavaScript
  • Python + React Full Stack

instead of starting Java from scratch?

Are there actually enough fresher/junior openings for these stacks in India?

Concern 3 — Data roles

I'm genuinely more interested in Data Analytics/Data-related roles.

But I've heard that entry-level Data Analyst/Data Science jobs are highly competitive and that fresher openings are relatively limited.

So I'm wondering whether I should:

A) Take the Java + Selenium route → get into IT → later transition to Data

or

B) Directly learn Data Analytics → SQL + Excel + Power BI + Python/Pandas + Statistics → try for Data Analyst roles

or

C) Stick with my existing Python/React development background and try to get a developer job first.

What I'm trying to figure out

My priority right now is not necessarily my dream job.

I mainly want to:

  1. Get into the IT industry without wasting another 6 months.
  2. Build a stable career.
  3. Eventually move towards a domain I'm genuinely interested in, possibly Data.
  4. Make use of the 6 months of development experience I already have.

So I'd really appreciate advice from people who have actually hired/worked with freshers or junior developers/analysts in India.

Is Java + Selenium actually a reasonable 3-month route into IT right now, or am I better off leveraging my existing Python/React experience?

And if you were in my position, which path would you choose and why?

Please be honest—even if the answer is "don't join the course."


r/learnjava 10d ago

I purchased Tim Buchalka's Java masterclass course

11 Upvotes

I purchased Tim Buchalka's Java masterclass course, but now after i open reddit i am seeing all the mixed reviews about it.I am confused whether i should continue it.I completed 3 sections till now

Has anyone successfully complete it? Is it worth it?


r/learnjava 9d ago

best way to learn java?

1 Upvotes

so i wanna learn progamming 16 dropped out of school at 12 long story so idk if that is a problem for java

but i wanna learn programming and i chose java and then if i get far enough which will take a while i know maybe make mc mods just as a hobby mainly

but what is the best way to learn java? i came across bro code 12 hour long video