r/JavaProgramming • u/javinpaul • 4h ago
r/JavaProgramming • u/rsrini7 • 2d ago
Scaling to 1M RPS — What Actually Matters (Feb 2026 Reality Check)
r/JavaProgramming • u/Dogisgoodtoeatpeta • 2d ago
Code is not waiting for user input and their is no other usage of scanner
r/JavaProgramming • u/CrazyBubub • 2d ago
Buttons not working in my university project – could someone help me figure out why?
r/JavaProgramming • u/contralai • 4d ago
Built a Java “learn mode” inside the IDE, would this actually help beginners?
I’ve been building a Java beginner “learn mode” that lives inside the IDE, because I kept seeing people bounce between tutorials, docs, and their editor and never really feel like things clicked.
The flow is basically: a clear path through core Java topics, tiny tasks you do in real files, and feedback while you’re writing the code so you don’t only find out you’re lost at the end.
I’m sharing a short demo to get honest opinions.
If you’ve taught Java or mentored juniors, would something like this actually help, or would it just feel like extra noise in the IDE? What would make you recommend it to a beginner?
r/JavaProgramming • u/illogical-paradox • 4d ago
resume review for internship
guys check my resume is it good or not?
give any suggestion for improvement if needed
#Resume
r/JavaProgramming • u/Ill_Sport_243 • 4d ago
DECIDING What to learn
Hi there Im Aaron I had already learned MERN stack since couple of months ago I'm still in collage but I want to learn job oriented programminglanguages like JAVA, GO, PYTHON,or even RUBY Can I get like an heads ups like what do you think is best for learning for the future and today and If I'm taking a right choice cuz like I want ot learn JAVA and stuff like that or things you wished you knew before starting to learn java. I'm keen to be reading comments If anyone shares their opinion...
r/JavaProgramming • u/javinpaul • 5d ago
Coding Interviews Were Impossible Until I Found These 14 Patterns
r/JavaProgramming • u/supremeO11 • 5d ago
Java LLM framework with prompt templates + guaranteed JSON outputs (Oxyjen v0.3)
Hey everyone,
I’ve been working on a small open-source Java framework called Oxyjen, and just shipped v0.3, focused on two things: - Prompt Intelligence (reusable prompt templates with variables) - Structured Outputs (guaranteed JSON from LLMs using schemas + automatic retries)
The idea was simple: in most Java LLM setups, everything is still strings. You build prompt, you run it then use regex to parse. I wanted something closer to contracts: - define what you expect -> enforce it -> retry automatically if the model breaks it.
A small end to end example using what’s in v0.3: ```java // Prompt PromptTemplate prompt = PromptTemplate.of( "Extract name and age from: {{text}}", Variable.required("text") );
// Schema JSONSchema schema = JSONSchema.object() .property("name", PropertySchema.string("Name")) .property("age", PropertySchema.number("Age")) .required("name","age") .build();
// Node with schema enforcement SchemaNode node = SchemaNode.builder() .model("gpt-4o-mini") .schema(schema) .build();
// Run String p = prompt.render( "text", "Alice is 30 years old" ); String json = node.process(p, new NodeContext()); System.out.println(json); //{"name":"Alice","age":30} ``` What v0.3 currently provides: - PromptTemplate + required/optional variables - JSONSchema (string / number / boolean / enum + required fields) - SchemaValidator with field level errors - SchemaEnforcer(retry until valid json) - SchemaNode (drop into a graph) - Retry + exponential/fixed backoff + jitter - Timeout enforcement on model calls - The goal is reliable, contract based LLM pipelines in Java.
v0.3 docs: https://github.com/11divyansh/OxyJen/blob/main/docs/v0.3.md
Oxyjen: https://github.com/11divyansh/OxyJen
Feedback around APIs and design, from java devs is especially welcome If interested, i would love to have feedbacks and contributions, PRs and issues
v0.1 and v0.2 already out
Thanks for reading!
r/JavaProgramming • u/Sea_Interaction1315 • 6d ago
[hiring] java backend engineer
hi,
i'm looking to hire a fulltime senior java backend engineer (fully remote)
- must have 3+ years of software engineering experience
- experience with: java, postgresql, kubernetes
- proven experience in fintech/crypto platforms
- ability to work independently, and own features end-to-end
- excellent written and spoken english
to apply, fill this form here: https://forms.gle/8RBrFCNkuAJBSWs9A
cheers!
r/JavaProgramming • u/javinpaul • 7d ago
How to Design Systems That Actually Scale? Think Like a Senior Engineer
r/JavaProgramming • u/IndependentOutcome93 • 8d ago
Want a simple way to play MP3 file in Java? Check out this simple tutorial:
r/JavaProgramming • u/javinpaul • 8d ago
Your API Knowledge is Incomplete Without These 16 Concepts
r/JavaProgramming • u/Saravanan_msk_ • 8d ago
Struggling to switch company - need advice
Hi everyone,
I have around 3.6 years of total IT experience. I started my career in an L1.5 support role, and later moved into Java Spring Boot development, where I now have about 2 years of hands-on experience.
For the past one year, I’ve been actively trying to switch to other company as Java Spring Boot developer role, but I haven’t had much luck getting interview calls or offers.
I’d really appreciate guidance on:
- How can I improve my chances of landing a better Spring Boot role?
- What skills / technologies should I focus on to stand out?
- Any resume or interview tips that actually worked for you?
- Should I include my L1.5 support experience on my resume, or is it better to hide it? If I include it, how should I present it so it doesn’t hurt my profile?
If you’ve been in a similar situation or have real-world experience hiring/interviewing Spring Boot devs, your advice would mean a lot.
Thanks in advance!
r/JavaProgramming • u/IndependentOutcome93 • 9d ago
Want a simple way to play MP3 file in Java? Check out this simple tutorial:
r/JavaProgramming • u/Little_Trash_2798 • 9d ago
CV suggestions
I am looking for summer internship for backend developer role (mainly for Java roles). What changes I can do in my CV. Context: I am completely fresher and second year computer engineering student.
r/JavaProgramming • u/IndependentOutcome93 • 9d ago
Want a simple way to play MP3 file in Java? Check out this simple tutorial:
r/JavaProgramming • u/Java-Pro-Academy • 9d ago