Comprehensive Guide to Creating and Using Maven Projects

Maven is a widely used automation tool that helps with continuous integration and deployment by providing a standardized way to create, build, and manage Java projects and their dependencies.

Using Maven simplifies dependency management, resolves version conflicts, and enforces a conventional project structure and lifecycle, which includes phases such as compile, test, package, integration‑test, verify, and deploy.

The standard Maven project layout consists of a pom.xml file at the root, src/main/java for source code, src/main/resources for resources, src/test/java for tests, and a target directory for build outputs.

Maven follows the principle of "convention over configuration": default settings handle most tasks (e.g., compiling Java files from src/main/java into target/classes) while still allowing overrides when needed.

Key Maven coordinates include groupId (organization identifier), artifactId (project name), version (release version), and packaging (typically jar or war). Versions follow the pattern

<major>.<minor>.<incremental>-<qualifier>

with special labels like SNAPSHOT, LATEST, and RELEASE.

Installation involves extracting the Maven binary, setting MAVEN_HOME, adding %MAVEN_HOME%\bin to the PATH, and verifying with mvn -version. The local repository location can be configured in conf/settings.xml.

To create a Maven project in IntelliJ, select File → New → Project → Maven , fill in the project coordinates, and use the built‑in Maven tool window to run commands such as mvn clean install.

Dependencies are added by inserting <dependency> entries into the pom.xml. External JARs can be found on mvnrepository.com. Plugins, like the maven-compiler-plugin, are configured inside a <build><plugins>... block.

Multi‑module builds are supported by creating a parent POM with a <modules> section that lists child modules (e.g., my-app and my-webapp), each with its own pom.xml and source tree.

For Spring Boot applications, the spring-boot-maven-plugin can repackage the project into an executable JAR. System‑scope dependencies can be included by setting <includeSystemScope>true in the plugin configuration.

Best practices recommend using a BOM (Bill of Materials) such as spring-boot-dependencies to centralize version management via <dependencyManagement> and <pluginManagement> sections.

The author, a developer named "小小", concludes the tutorial and invites readers to the next installment.