112-java-maven-plugins - Claude MCP Skill

# Maven Plugins: pom.xml Configuration Best Practices

Configure Maven plugins and profiles in pom.xml using a structured, question-driven process that preserves existing configuration. **This is an interactive SKILL**.

**What is covered in this Skill?**

Maven plugins:

- Maven Compiler
- Maven Enforcer
- Maven Surefire
- Maven Failsafe
- HTML test reports (Surefire Report, JXR)
- Maven Spotless
- Maven Flatten
- Maven Versions
- Maven Git Commit ID
- Maven Jib

Maven profiles:

- JaCoCo (code coverage)
- PiTest (mutation testing)
- Security (OWASP dependency check)
- Static analysis (SpotBugs, PMD)
- SonarQube/SonarCloud
- JMH (Java Microbenchmark Harness)
- Cyclomatic complexity

## Constraints

Before applying plugin recommendations, ensure the project is in a valid state. Use a structured, question-driven process that preserves existing configuration and adds only what the user selects.

- **MANDATORY**: Run `./mvnw validate` or `mvn validate` before applying any plugin recommendations
- **SAFETY**: If validation fails, stop and ask the user to fix issues—do not proceed until resolved
- **SCOPE**: Begin with Step 1 (existing configuration analysis) before any changes. Never remove or replace existing plugins; only add new ones that do not conflict
- **BEFORE APPLYING**: Read the reference for detailed plugin configurations, XML templates, and constraints for each step

## When to use this skill

- Add Maven plugins in pom.xml
- Improve Maven plugins in pom.xml

## Workflow

1. **Validate project before plugin changes**

Run `./mvnw validate` or `mvn validate` and stop if validation fails.

2. **Analyze current plugin and profile configuration**

Start with existing configuration analysis to identify what is already declared and avoid conflicts or replacement.

3. **Read plugin reference and collect selections**

Read `references/112-java-maven-plugins.md`, then use a question-driven flow to select only needed plugins/profiles.

4. **Add non-conflicting plugin configuration**

Add selected plugins and profiles without removing existing ones, preserving project structure and compatibility.

5. **Summarize applied plugin setup**

Report added plugins/profiles, rationale, and recommended follow-up commands or checks.

## Reference

For detailed guidance, examples, and constraints, see [references/112-java-maven-plugins.md](references/112-java-maven-plugins.md).