How do I install the 172 Java Diagrams skill?

Run npx skillmds@latest add majiayu000/172-java-diagrams-3 in your terminal (requires Node.js), paste this page's agent-chat prompt into Claude, Cursor, or any MCP-connected agent, or download the SKILL.md file and copy it into your agent's skills directory.

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Is 172 Java Diagrams free to use?

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Who published 172 Java Diagrams?

majiayu000 (@majiayu000) published this skill. Their other Agent Skills are listed on their SkillMD profile.

172 Java Diagrams by majiayu000 — Agent Skill

Name: 172 Java Diagrams
Rating: 4.666666666666667 (3 reviews)
Author: majiayu000

172 Java Diagrams

Use when you need to generate Java project diagrams — including UML sequence diagrams, UML class diagrams, C4 model diagrams, and UML state machine diagrams — through a modular, step-based interactive process that adapts to your specific visualization needs. Part of the skills-for-java project

majiayu000 Updated Sep 22, 2026 567 repo stars

File contents

Java Diagrams Generator with modular step-based configuration

Generate comprehensive Java project diagrams through a modular, step-based interactive process that covers UML sequence diagrams, UML class diagrams, C4 model diagrams, and UML state machine diagrams using PlantUML syntax.

Core areas: UML sequence diagram generation for application workflows and API interactions, UML class diagram generation for package structure and class relationships, C4 model diagram generation at Context/Container/Component/Code abstraction levels, UML state machine diagram generation for entity lifecycles and business workflows, PlantUML syntax for all diagram types, file organization strategies (single-file, separate-files, or integrated with existing documentation), and final diagram validation with PlantUML syntax checking.

Prerequisites: Run ./mvnw validate or mvn validate before applying any diagram generation. If validation fails, stop immediately — do not proceed until all validation errors are resolved.

Multi-step scope: Step 1 assesses diagram preferences through targeted questions to determine which subsequent steps to execute. Step 2 generates UML sequence diagrams for main application flows, API interactions, and complex business logic — conditionally executed if selected. Step 3 generates UML class diagrams for all packages, core business logic packages, or specific packages, showing inheritance, composition, and dependency relationships — conditionally executed if selected. Step 4 generates C4 model diagrams covering System Context, Container, Component, and Code levels — conditionally executed if selected. Step 5 generates UML state machine diagrams for entity lifecycles, business workflows, system behaviors, and user interactions — conditionally executed if selected. Step 6 validates all generated diagrams and produces a comprehensive summary of files created, directory structure, content coverage, and usage instructions for rendering with PlantUML.

Before applying changes: Read the reference for detailed good/bad examples, constraints, and safeguards for each diagram generation pattern.

Reference

For detailed guidance, examples, and constraints, see references/172-java-diagrams.md.

---name: 172-java-diagrams-3description: Use when you need to generate Java project diagrams — including UML sequence diagrams, UML class diagrams, C4 model diagrams, and UML state machine diagrams — through a modular, step-based interactive process that adapts to your specific visualization needs. Part of the skills-for-java project---# Java Diagrams Generator with modular step-based configurationGenerate comprehensive Java project diagrams through a modular, step-based interactive process that covers UML sequence diagrams, UML class diagrams, C4 model diagrams, and UML state machine diagrams using PlantUML syntax.**Core areas:** UML sequence diagram generation for application workflows and API interactions, UML class diagram generation for package structure and class relationships, C4 model diagram generation at Context/Container/Component/Code abstraction levels, UML state machine diagram generation for entity lifecycles and business workflows, PlantUML syntax for all diagram types, file organization strategies (single-file, separate-files, or integrated with existing documentation), and final diagram validation with PlantUML syntax checking.**Prerequisites:** Run `./mvnw validate` or `mvn validate` before applying any diagram generation. If validation fails, **stop immediately** — do not proceed until all validation errors are resolved.**Multi-step scope:** Step 1 assesses diagram preferences through targeted questions to determine which subsequent steps to execute. Step 2 generates UML sequence diagrams for main application flows, API interactions, and complex business logic — conditionally executed if selected. Step 3 generates UML class diagrams for all packages, core business logic packages, or specific packages, showing inheritance, composition, and dependency relationships — conditionally executed if selected. Step 4 generates C4 model diagrams covering System Context, Container, Component, and Code levels — conditionally executed if selected. Step 5 generates UML state machine diagrams for entity lifecycles, business workflows, system behaviors, and user interactions — conditionally executed if selected. Step 6 validates all generated diagrams and produces a comprehensive summary of files created, directory structure, content coverage, and usage instructions for rendering with PlantUML.**Before applying changes:** Read the reference for detailed good/bad examples, constraints, and safeguards for each diagram generation pattern.## ReferenceFor detailed guidance, examples, and constraints, see [references/172-java-diagrams.md](references/172-java-diagrams.md).

Frequently asked questions