Tutorial for Maven Beginners

Tutorial for Maven Beginners:

Apache Maven is a software project management and comprehension tool. Based on the concept of a project object model (POM), Maven can manage a project's build, reporting and documentation from a central piece of information.

Note : Download Maven from this Maven Download.

Maven's Objectives:

Maven's primary goal is to allow a developer to comprehend the complete state of a development effort in the shortest period of time. In order to attain this goal there are several areas of concern that Maven attempts to deal with:

Making the build process easy
Providing a uniform build system
Providing quality project information
Providing guidelines for best practices development
Allowing transparent migration to new features

Proxy configuration in <Maven_Home>/conf/settings.xml:

<proxy>

<username>ktpot</username>

<nonProxyHosts>local.net|some.host.com</nonProxyHosts>

</proxy>

Sample POM.XML:

<project>
  <!-- model version is always 4.0.0 for Maven 2.x POMs -->
  <modelVersion>4.0.0</modelVersion>

 
  <!-- project coordinates, i.e. a group of values which
       uniquely identify this project -->
 
  <groupId>com.ktpot.blog</groupId>
  <artifactId>ktpot</artifactId>
  <name>Knowledge Transfer Pot</name> <packaging>war</packaging>
 <version>6.0.0-Beta</version>
<!-- library dependencies --> 
  <dependencies>
    <dependency> 
      <!-- coordinates of the required library --> 
      <groupId>junit</groupId>
      <artifactId>junit</artifactId>
      <version>3.8.1</version> 
      <!-- this dependency is only used for running and compiling tests --> 
      <scope>test</scope> 
    </dependency>
  </dependencies>
</project>

New dependency can be added into pom.xml.

Maven Project Structure:

Directory name	Purpose
project home	Contains the pom.xml and all sub-directories.
src/main/java	Contains the deliverable Java sourcecode for the project.
src/main/resources	Contains the deliverable resources for the project, such as property files.
src/test/java	Contains the testing Java sourcecode (JUnit or TestNG test cases, for example) for the project.
src/test/resources	Contains resources necessary for testing.

Useful Commands:

Check Version:

mvn --version

Create a New Project:

mvn archetype:generate -DgroupId=com.ktpot.blog -DartifactId=ktpot -DarchetypeArtifactId=maven-archetype-quickstart -DinteractiveMode=false

Clean a project:

mvn clean

Compile a project:

mvn compile

Run unit tests (it also compiles a project):

mvn test

Build a package (it also executes unit tests):

mvn package

Run integration test (it also builds a package):

mvn verify

Install a package into local repository (it also runs integration tests):

mvn install

Install an artifact into local repository (skip integration test execution):

mvn -DskipITs=true install

Install an artifact into local repository (skip unit and integration test execution):

mvn -DskipTests=true install

mvn eclipse:eclipse – Run this command where the pom.xml resides. It will create the .project so that you can easily import into eclipse

mvn eclipse:eclipse -Dwtpversion=2.0 - Run this command where the pom.xml resides. It will create dynamic web content project so that you can import the project directly into eclipse and run it in your development environment.

Complete Maven video tutorial available in the below link.(Along with Eclipse Configuration)
http://www.classiclearn.com/java/maven-tutorials-video_fa35be16f.html

Knowledge Transfer Pot

Tutorial for Maven Beginners