Build Maven

---
name: Maven Build
description: POM structure, dependency management, plugins, profiles, and multi-module projects.
metadata:
  labels: [java, maven, build]
  triggers:
    files: ['pom.xml']
    keywords: [dependencyManagement, plugin, maven, lifecycle, groupId, artifactId, version]
---

# Maven Build Standards

## POM Structure

```xml
<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0
                             http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>

    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>3.2.0</version>
    </parent>

    <groupId>com.example</groupId>
    <artifactId>my-app</artifactId>
    <version>1.0.0-SNAPSHOT</version>
    <packaging>jar</packaging>

    <properties>
        <java.version>21</java.version>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
    </properties>

    <dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>
    </dependencies>

    <build>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
            </plugin>
        </plugins>
    </build>
</project>
```

## Dependency Management

```xml
<dependencyManagement>
    <dependencies>
        <!-- BOM import -->
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-dependencies</artifactId>
            <version>2023.0.0</version>
            <type>pom</type>
            <scope>import</scope>
        </dependency>
    </dependencies>
</dependencyManagement>
```

## Common Commands

```bash
mvn clean install              # Build and install
mvn clean install -DskipTests  # Skip tests
mvn dependency:tree            # Show dependency tree
mvn versions:display-dependency-updates  # Check updates
mvn spring-boot:run            # Run Spring Boot app
```

## References

- [Dependency Management](references/dependency-management.md) - BOMs, exclusions, versions