Show HN: JavaFactory – IntelliJ plugin to generate Java code

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 wer

Show HN: Text to 3D simulation on a map (does history pretty well)

Simulate anything on a map from a text prompt -- and conduct risk analysis against LiveUA map's global realtime data points from social media and news sources. I trained a GPT-2-size model on historical incident data used to predict things that will go wrong.

As historian Benjamin Breen mentions, the leading language models are good historians, so the application will simulate historical events pretty well also.

I include a Multi-Agent RL Urban Mobility model in progress displayed on the


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