JavaFactory – IntelliJ plugin to generate Java code

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

Contribute to JavaFactoryPluginDev/javafactory-plugin development by creating an account on GitHub.

JavaFactory is a tool that uses LLMs to automatically generate repetitive Java code. It produces results that are more predictable and stable than those of traditional AI code generators. JavaFactory operates based on two core components: Pattern Definition: Define each unit of work in natural language (e.g., test generation, implementation generation, etc.) Annotation-Based Reference Collection: Explicitly specify the required classes using annotations. Once defined, these patterns can be reused repeatedly to generate various types of code — such as implementations, tests, and fixtures. Repetitive tasks can be defined as a single pattern. A pattern clearly specifies what to generate, how…from github.com

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…

• 
  IntelliJ plugin to auto generate boilerplate code for Java unit tests2018 · squaretest.com · ▲11

  Generate a test class with code to construct the source class, initialize the dependencies and create test methods. Each test method contains code to initialize the arguments, invoke the source-method and compare the returned value to an expected value.

• 
  Runabout2023 · plugins.jetbrains.com · ▲90

  Instantly reproduce scenarios in your code

• 
  JD Generator2022 · hirequotient.com · ▲215

  The Jedi of JDs is right here! Craft expert JDs in seconds.

• 
  I spent my vacation writing a modern JVM assembler2022 · github.com · ▲218

  A JVM assembler for the modern age. Contribute to roscopeco/jasm development by creating an account on GitHub.

• 
  Programmatically Generate Diagrams for GitHub Readmes2019 · github.com · ▲220

  🧜‍♀️ RESTful rendering pipeline for generating sequence and UML diagrams using Mermaid for Markdown docs (Diagrams as a Service) - Schachte/Mermrender

• 3L
  300k lines of Java UI code running native in browser at desktop speed2019 · reportmill.com · ▲289

• 
  Spira Maxima▲578

  Video model that turns script into viral social media videos

  AI · 17d ago · spira.ai

• 
  Rill Browser▲540

  The browser where Claude Code and Codex work beside you

  AI · 16d ago · rill.love

• 
  Germany's new sovereign AI model Kolibri▲424

  Kolibri is Aleph Alpha

  AI · 18d ago · tej.as

• 
  Giving Opus 5.5 a simulated paint canvas▲392

  Paintings by AI models: programs run through a simulation of oil paint.

  AI · 20d ago · stillwet.art

• 
  Onepin▲384

  AI voiceover with every name, price and date said right

  AI · 30d ago · onepin.ai

• 
  PixVerse R2▲381

  A real-time world model you can explore and change

  AI · 28d ago · world.pixverse.video

• 
  Tapflow 2.0▲1,125

  We built Tapflow for devs, designers, PMs, and tech folks who’ve been sitting on internal docs, templates, and systems — but never productized them. Upload a PDF, notes, or workshop deck, and Tapflow drafts a structured product (with chapters, teaser and pricing plans). It’s good for AI kits, onboarding guides, design systems, and frameworks. You can sell through Stripe, LemonSqueezy, or PayPal. Real-time collaboration is in early beta. No site builder, no LMS — clean design and just focused tools to ship. Fully bootstrapped and just launched on PH today →…

  Work · 2025 · tapflow.ai

• C9
  Clippy – 90s UI for local LLMs▲1,122

  Life & fun · 2025 · felixrieseberg.github.io

• 
  Appwrite Sites▲990

  Appwrite 2.0 brings a new engine, a rebuilt Console, five database types, an S3 API, an OAuth 2.1 server, and organization-level Domains and Firewall.

  Dev tools · 2025 · appwrite.io

• 
  AI Meeting Notes by Notion▲965

  Perfect meeting memory in Notion

  AI · 2025 · notion.com

• 
  Den▲948

  Multiplayer AI agent builder

  AI · 2025 · getden.io

• 
  Raycast for iOS▲870

  Powerful productivity on the go

  AI · 2025 · raycast.com