# 111 Java Maven Dependencies

> Use when you need to add or evaluate Maven dependencies that improve code quality — including nullness annotations (JSpecify), static analysis (Error Prone + NullAway), functional programming (VAVR), or architecture testing (ArchUnit) — and want a consultative, question-driven approach that adds only what you actually need. Part of the skills-for-java project

- Skill: `jabrena/111-java-maven-dependencies` (Agent Skill, multi-file: 2 files)
- Install (CLI): `npx skillmds@latest add jabrena/111-java-maven-dependencies`
- Raw SKILL.md: https://api.skillmd.com/api/skills/jabrena/111-java-maven-dependencies/raw
- Safety review: pending
- Works with: Claude Code, Claude.ai, OpenAI Codex
- Category: Coding & Dev Tools
- License: Apache-2.0
- Author: jabrena (https://skillmd.com/u/jabrena)
- Updated: 2026-09-17
- Page: https://skillmd.com/skills/jabrena/111-java-maven-dependencies

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# Add Maven dependencies for improved code quality

Add essential Maven dependencies that enhance code quality and safety through a consultative, question-driven approach. **This is an interactive SKILL**.

**What is covered in this Skill?**

- JSpecify: (nullness annotations, `provided` scope)
- Error Prone + NullAway: (enhanced static analysis with compile-time null checking)
- VAVR: (functional programming with Try/Either and immutable collections)
- ArchUnit: (architecture rule enforcement, `test` scope)

## Constraints

Before adding Maven dependencies, ensure the project is in a valid state. Use a consultative, question-driven flow that adds only what the user selects.

- **MANDATORY**: Run `./mvnw validate` or `mvn validate` before any changes
- **SAFETY**: If validation fails, stop and ask the user to fix issues—do not proceed until resolved
- **BEFORE ASKING QUESTIONS**: Read the reference to use the exact wording and options from the template. Ask questions one-by-one in strict order (JSpecify → Enhanced Compiler Analysis (conditional) → VAVR → ArchUnit) and add only what the user selects. Use consultative language, present trade-offs, and wait for user responses before implementing

## When to use this skill

- Add Maven dependencies
- Add JSpecify nullness dependencies
- Add Error Prone NullAway dependencies
- Add VAVR functional dependencies
- Add ArchUnit architecture testing dependencies

## Reference

For detailed guidance, examples, and constraints, see [references/111-java-maven-dependencies.md](references/111-java-maven-dependencies.md).