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Ask HN: Do you remux WebM to MP4 without re-encoding?

1•vanta_tool•10s ago•0 comments

Show HN: Depsly – a CLI to see the dependency impact of NPM packages

https://github.com/sshiraz/depsly
1•cyborg933•50s ago•0 comments

Smartpress

https://smartpress.netlify.app
1•nickfosterna•7m ago•1 comments

Parity of permutations, impossible puzzles and the magical determinant [video]

https://www.youtube.com/watch?v=rUiulWItECQ
1•vismit2000•12m ago•0 comments

Oxygen made from Moon dust for first time

https://www.telegraph.co.uk/news/2026/04/09/oxygen-made-from-moon-dust-for-the-first-time/
2•jonbaer•18m ago•0 comments

cmakefmt: A lightning-fast CMake file formatter

https://github.com/cmakefmt/cmakefmt
1•rmast•18m ago•0 comments

Monsters in the Archives by Caroline Bicks – The Writing Secrets of Stephen King

https://www.theguardian.com/books/2026/mar/30/monsters-in-the-archives-by-caroline-bicks-review-t...
2•lermontov•19m ago•0 comments

Save Walter White

https://save-walt.onrender.com/
1•flykespice•21m ago•1 comments

Artemisia Gentileschi Masterpiece Goes to Auction–Without Its Face

https://news.artnet.com/market/gentileschi-mary-magdalene-fragment-dorotheum-auction-2763142
1•bookofjoe•24m ago•0 comments

Trick Might Stop Gulls from Nabbing Your Lunch

https://gizmodo.com/this-ridiculously-simple-trick-might-stop-gulls-from-nabbing-your-lunch-20007...
2•gnabgib•25m ago•0 comments

Linktree for Professionals

https://airlinkee.com/en/
1•wonsukchoi97•27m ago•0 comments

FullScope-MCP – Cut agent token usage by 60% without lossy summarization

https://github.com/justguy/FullScope-MCP/
1•justguyB•29m ago•0 comments

OpenOats – A meeting note-taker that talks back

https://github.com/yazinsai/OpenOats
3•rahimnathwani•33m ago•3 comments

After the Attack on Sam Altman's Home, Will AI CEOs Go on the Offensive?

https://www.motherjones.com/politics/2026/04/after-the-attack-on-sam-altmans-home-will-ai-ceos-go...
1•cdrnsf•36m ago•0 comments

The oldest known evidence of stitched clothing

https://refractor.io/history/oldest-evidence-stitched-clothing-fabric-prehistoric-oregon/
1•breve•38m ago•0 comments

Optimization of 32-bit Unsigned Division by Constants on 64-bit Targets

https://arxiv.org/abs/2604.07902
1•simjnd•39m ago•0 comments

B2alpha

https://b2alpha.io/
1•21J3phy•41m ago•0 comments

Elastic Tabstops (2006)

https://nick-gravgaard.com/elastic-tabstops/
1•birdculture•43m ago•1 comments

AI Job Loss Tracker

https://jobloss.ai/
21•gnabgib•43m ago•16 comments

We Are All Constantly Mutating – and That's a Good Thing

https://www.newyorker.com/magazine/2026/04/13/beyond-inheritance-roxanne-khamsi-book-review
1•mitchbob•1h ago•1 comments

More than 12 tons of KitKat's 'new chocolate range' stolen in Italy

https://www.theguardian.com/world/2026/mar/28/kitkat-stolen-italy-f1-bar
1•wslh•1h ago•0 comments

Artemis II Astronauts Back in Houston, Reunite with Families

https://www.nasa.gov/blogs/missions/2026/04/11/artemis-ii-astronauts-back-in-houston-reunite-with...
1•salkahfi•1h ago•0 comments

Curated Costa Rica: The Best Tailor-Made Experiences for Every Type of Traveller

https://johnquam.substack.com/p/curated-costa-rica-the-best-tailor
1•headmonkey•1h ago•1 comments

Unified Perception Engine: never render more than humans can see (public domain)

https://github.com/warofwar2011-dev/unified-perception-engine
1•Mars2011•1h ago•0 comments

The Enigma of Gertrude Stein

https://www.thenation.com/article/culture/gertrude-stein-afterlife-wade-review/
2•samclemens•1h ago•0 comments

Midnight Captain – A midnight commander inspired file manager

https://github.com/duguyue100/midnight-captain
3•duguyue100•1h ago•3 comments

Hackers meet match: New DNA encryption protects engineered cells from within

https://phys.org/news/2026-04-hackers-dna-encryption-cells.html
2•pseudolus•1h ago•0 comments

High-Level Rust: Getting 80% of the Benefits with 20% of the Pain

https://hamy.xyz/blog/2026-01_high-level-rust
2•maxloh•1h ago•0 comments

Show HN: I benchmarked MCP vs. CLI for browser automation. MCP wins by 25x

https://github.com/HKUDS/CLI-Anything/pull/212
1•Achiyacohen•1h ago•1 comments

"MongoDB is web scale" (Throwback 2010 XtraNormal clip) [video]

https://www.youtube.com/watch?v=b2F-DItXtZs
2•chirau•1h ago•1 comments
Open in hackernews

Show HN: JavaFactory – IntelliJ plugin to generate Java code

https://github.com/JavaFactoryPluginDev/javafactory-plugin
44•javafactory•10mo ago
Hi HN,

I built a code generator plugin for IntelliJ that uses LLMs to create repetitive Java code like implementations, tests, and fixtures — based on custom natural-language patterns and annotation-based references.

Most tools like Copilot or Cursor aim to be general, but fail to produce code that actually fits a project structure or passes tests.

So I made something more explicit: define patterns + reference scope, and generate code consistently.

In this demo, 400 lines of Java were generated in 20 seconds — and all tests passed: https://www.youtube.com/watch?v=ReBCXKOpW3M

GitHub: https://github.com/JavaFactoryPluginDev/javafactory-plugin

Comments

geodel•10mo ago
Feels very Java like. Factories, repositories, utils, patterns etc. Good stuff.
asdffdasy•10mo ago
yoDawgMemesFactory
javafactory•10mo ago
thank you. i think this tool have really room to grow, but still concept of manipulate each task is quite usefule
cess11•10mo ago
The guide is a 404.

"404 - page not found The

master branch of

javafactory-plugin does not contain the path

docs/how-to-use.md."

How do I hook it into local models? Does it support Ollama, Continue, that kind of thing? Do you collect telemetry?

javafactory•10mo ago
1. Im sorry. i it was typo on path, i fixed it so you can see now.

2. from now, i only allow to use gpt-4o, because the requests involve relatively long context windows, which require high-quality reasoning. Only recent high-performance models like GPT-4o or Claude Sonnet are capable of reducing the manual workload for this kind of task.

___

but still, if user want to use other models , i can make adapter features for various models

cess11•10mo ago
Thanks.

Right, so it can't be used on proprietary code or in settings where personal data might occur.

javafactory•10mo ago
That's right. Unfortunately, the system currently forces the use of GPT-4o.

To be honest, I didn’t realize that model selection would be such an important point for users. I believed that choosing a high-quality model with strong reasoning capabilities was part of the service’s value proposition.

But lately, more users — including yourself — have been asking for support for other models like Claude Sonnet or LLaMA.

I’m now seriously considering adding an adapter feature. Thank you for your feedback — I really appreciate it.

cess11•10mo ago
I can't speak for other people but I regularly work with code that is not owned by my organisation and getting approval to send it out to some remote, largely unaccountable, corporation is likely to be impossible under the conditions which we operate.

Together with the CEO I've also decided that we do not do this with our own code, it stays on machines we control until someone pays for some artifact we'd like to license.

I'm well aware that many other organisations take a different position and push out basically everything they work on to SaaS LLM:s, in my experience defending it with something about so called productivity and something about some contract clause about the SaaS pinky promising to not straight up take the code. But nothing stops them from running hidden queries against it with their in-house models parallel with providing their main service, and sift out a lot of trade secrets and other goodies from it.

It's also likely these SaaS corporations can benchmark and otherwise profile individual developers, information that would be very valuable to e.g. recruiting agencies.

diggernet•10mo ago
And I work for an organization that does everything they can think of to make it virtually impossible for anyone to leak code outside, but is now mandating Copilot use to the point of including it in personal performance goals.
likis•10mo ago
What LLM is it using? Is it something local? Or does it call out? It wasn't obvious from the docs, and I didn't want to dig through all of the code to figure it out. Should probably be clearly stated on the front page.

But the project looks interesting, I have been looking for something similar.

trollied•10mo ago
It uses openai.
javafactory•10mo ago
This uses OpenAI's GPT-4o model.

The requests involve relatively long context windows, which require high-quality reasoning. Only recent high-performance models like GPT-4o or Claude Sonnet are capable of reducing the manual workload for this kind of task.

simpaticoder•10mo ago
If the trend continues a program will look like "JavaFactory("<prompt>").compile().run();".
winrid•10mo ago
I've always wondered how long until we reach this. If every pc can run models locally, with a given seed and prompt it could be the ultimate compression. It's also hilarious.
imhoguy•10mo ago
Although very lossy compression, each invocation will be different, so that will inevitably circle back to "strong-static-LLM" prompts. What? wait..!
woodrowbarlow•10mo ago
LLMs at their core do produce reproducible results with a given seed. it's all the workflow stuff people do on top that tends to break reproducibility.
dibujaron•10mo ago
This is not the case for LLMs running on GPUs (which is most of them); GPUs are non-deterministic for this use-case due to the floating point math involved. there is no way to get perfectly deterministic output from OpenAI despite the presence of seed and temperature parameters.
javafactory•10mo ago
Thank you — I’ll consider adding that feature.

Actually, I'm currently thinking about creating a small community for sharing pattern definitions.

redditor98654•10mo ago
Do you already have some common templates ready to be used somewhere?
AugustoCAS•10mo ago
A side comment, I have found that configuring a few live templates in IntelliJ helps me to write a lot of the repetitive code just a handful of keystrokes regardless of the language.

Structural refactoring is another amazing feature that is worth knowing.

javafactory•10mo ago
I think IntelliJ is a great tool on its own. Recently, they even added a feature that auto-injects dependencies when you declare them as private final — super convenient.

I can’t help but wonder if the folks at JetBrains are starting to feel a bit of pressure from tools like Cursor or Windsurf

zikani_03•10mo ago
I've also got some mileage from live templates for repetitive code. However, at some point I built[0] an IntelliJ IDEA plugin to help me generate setters and field assignments that I felt live templates weren't a good solution for (for my case). I don't know if JavaFactory solves this kind of problem, keen to try it out.

[0]: https://github.com/nndi-oss/intellij-gensett

p0w3n3d•10mo ago
As a programmer I feel bad if tests don't fail at the first run... It might show that they are not testing...
javafactory•10mo ago
Your point is valid. In real-world work, tests should focus on parts that are difficult to verify, and if everything passes on the first try, it's often a sign that something deserves a closer look.

That said, what I wanted to highlight in the example was a contrast — tools like Cursor and other general-purpose models often fail to even generate simple tests correctly, or can't produce tests that pass. So the goal was to show the difference in reliability.

diggernet•10mo ago
Related to this, consider that when an LLM writes tests for code, it's writing them based on what the code actually does, not what it's supposed to do. This is equally true when the code itself was written by the LLM. Sure the tests pass, but that doesn't prove the code is correct.