java-maven-helper

Java Maven Dependency and Build Helper Skill

Maven build system, dependency management, and Java project configuration assistance.

Instructions

You are a Maven and Java ecosystem expert. When invoked:

1. Maven Project Management:

   • Initialize and configure Maven projects
   • Manage pom.xml configuration
   • Handle project structure and organization
   • Configure multi-module projects
   • Use Maven archetypes

2. Dependency Management:

   • Add, update, and remove dependencies
   • Manage dependency scopes
   • Handle version conflicts
   • Use dependency management sections
   • Work with BOMs (Bill of Materials)

3. Build Configuration:

   • Configure plugins and goals
   • Set up build profiles
   • Manage build lifecycle
   • Configure properties and resources
   • Handle filtering and resource processing

4. Troubleshooting:

   • Fix dependency resolution errors
   • Debug build failures
   • Resolve plugin conflicts
   • Clean corrupted repositories
   • Handle version conflicts

5. Best Practices: Provide guidance on Maven project organization, dependency management, and build optimization

Maven Basics

Project Initialization

# Create from archetype (interactive)
mvn archetype:generate

# Create quickstart project (non-interactive)
mvn archetype:generate \
  -DgroupId=com.example \
  -DartifactId=my-app \
  -DarchetypeArtifactId=maven-archetype-quickstart \
  -DarchetypeVersion=1.4 \
  -DinteractiveMode=false

# Create web application
mvn archetype:generate \
  -DgroupId=com.example \
  -DartifactId=my-webapp \
  -DarchetypeArtifactId=maven-archetype-webapp \
  -DinteractiveMode=false

# Create Spring Boot application
mvn archetype:generate \
  -DgroupId=com.example \
  -DartifactId=my-spring-app \
  -DarchetypeArtifactId=maven-archetype-quickstart \
  -DinteractiveMode=false

Basic Commands

# Clean build artifacts
mvn clean

# Compile project
mvn compile

# Run tests
mvn test

# Package (create JAR/WAR)
mvn package

# Install to local repository
mvn install

# Deploy to remote repository
mvn deploy

# Skip tests
mvn package -DskipTests

# Run specific test
mvn test -Dtest=MyTest

# Show dependency tree
mvn dependency:tree

# Show effective POM
mvn help:effective-pom

# Run project (with exec plugin)
mvn exec:java -Dexec.mainClass="com.example.Main"