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 were generated in 20 seconds — and all tests passed: https://www.youtube.com/watch?v=ReBCXKOpW3M…
In plain words
JavaFactory is an IntelliJ plugin that generates repetitive Java code such as implementations, tests, and fixtures using large language models. It works by defining custom natural-language patterns and annotation-based references to consistently produce code that fits project structure and passes tests. The plugin targets Java developers seeking to automate boilerplate code generation with predictable, project-specific results rather than general-purpose AI assistants.
written from the facts on this page · September 2026
From the sources
In the maker’s words, at launch
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
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