What is Maven? Maven is an automation and management tool developed by Apache Software Foundation. It was initially released on 13 July 2004. In the Yiddish language, the meaning of Maven is “accumulator of knowledge”. Maven is a project management and comprehension tool that provides developers a complete build life-cycle framework.

1. Copyright @ 2015 Learntek. All Rights Reserved. 1

2. What is Maven?

3. Copyright @ 2018 Learntek. All Rights Reserved. 3
What is Maven?
Maven is an automation and management tool developed by Apache Software
Foundation. It was initially released on 13 July 2004. In Yiddish language the meaning
of Maven is “accumulator of knowledge”. Maven is a project management and
comprehension tool that provides developers a complete build life-cycle framework.
Development team can automate the project’s build infrastructure in almost no time
as Maven uses a standard directory layout and a default build life-cycle. Maven is a
powerful project management tool that is based on POM (project object model). It is
used for projects build, dependency and documentation. It simplifies the build
process like ANT. But it is too much advanced than ANT. Maven includes project
information and configuration information for Maven such as construction directory,
source directory, dependency, test source directory, Goals, plugins, etc.

4. Copyright @ 2018 Learntek. All Rights Reserved. 4
What are the key features of Maven?
• Simple project setup that follows best practices
• Consistent usage across all projects
• Easy way to build projects in which unnecessary details are hidden
• Uniform build system, where a standard strategy is followed
• Dependency management including automatic updating
• Quality project information, such as dependency lists, cross referenced sources and
unit test reports
• Dependency management, including automatic updating and dependency closures
• The ability to handle multiple projects simultaneously
• Dynamic downloading of necessary Java libraries and plug-ins from Maven
repositories

5. Copyright @ 2018 Learntek. All Rights Reserved. 5
Model-based builds − Maven is able to build any number of projects into predefined
output types such as jar, war, metadata
Coherent site of project information − Using the same metadata as per the build
process, maven is able to generate a website and a PDF including complete
documentation
Backward Compatibility – You can easily port the multiple modules of a project into
Maven 3 from older versions of Maven. It can support the older versions also
Parallel builds − It analyses the project dependency graph and enables you to build
schedule modules in parallel. Using this, you can achieve the performance
improvements of 20-50%.
What are the core concepts of Maven?
• Build Plugins: Build plugins are used to perform specific goal. You can add a plugin
to the POM file. Maven has some standard plugins you can use, and you can also
implement your own in Java.

6. Copyright @ 2018 Learntek. All Rights Reserved. 6
• Build Profiles: Build profiles a set of configuration values which allows you to build
your project using different configurations. For example, you may need to build your
project for your local computer, for development and test. To enable different builds
you can add different build profiles to your POM files using its profiles elements and
are triggered in the variety of ways.
• POM Files: Project Object Model (POM) Files are XML file that contains information
related to the project and configuration information such as dependencies, source
directory, plugin, and goals etc. used by Maven to build the project. When you
should execute a maven command you give maven a POM file to execute the
commands. Maven reads pom.xml file to accomplish its configuration and
operations.

7. Copyright @ 2018 Learntek. All Rights Reserved. 7
• Dependencies and Repositories: Dependencies are external Java libraries required
for Project and repositories are directories of packaged JAR files. The local
repository is just a directory on your machine hard drive. If the dependencies are
not found in the local Maven repository, Maven downloads them from a central
Maven repository and puts them in your local repository.
• Build Life Cycles, Phases and Goals: A build life cycle consists of a sequence of
build phases, and each build phase consists of a sequence of goals. Maven
command is the name of a build life-cycle, phase or goal. If a life-cycle is requested
executed by giving maven command, all build phases in that life cycle are executed
also. If a build phase is requested executed, all build phases before it in the defined
sequence are executed too.

8. Copyright @ 2018 Learntek. All Rights Reserved. 8
What maven does?
Below are the task performed by Maven:
• We can easily build a project using maven.
• We can add jars and other dependencies of the project easily using the help of
maven.
• Maven provides project information (log document, dependency list, unit test
reports etc.)
• Maven is very helpful for a project while updating central repository of JAR’s and
other dependencies.
• With the help of Maven we can build any number of projects into output types like
the JAR, WAR etc without doing any scripting.
• Using maven we can easily integrate our project with source control system (such
as Subversion or Git).

9. Copyright @ 2018 Learntek. All Rights Reserved. 9
Advantages of using Maven:
• Maven can add all the dependencies required for the project automatically by
reading pom file.
• One can easily build their project to jar,war etc. as per their requirements using
Maven.
• Maven makes easy to start project in different environments and one doesn’t needs
to handle the dependencies injection, builds, processing, etc.
• Adding a new dependency is very easy. One has to just write the dependency code
in pom file.
Disadvantages of using Maven:
• Maven needs the maven installation in the system for working and maven plugin
for the ide.
• If the maven code for an existing dependency is not available, then one cannot add
that dependency using maven.

10. Copyright @ 2018 Learntek. All Rights Reserved. 10
Summary:
Maven is an automation and management tool. Maven is a popular open source build
tool for enterprise Java projects, designed to take much of the hard work out of the
build process. Maven uses a declarative approach, where the project structure and
contents are described, rather than the task-based approach used in Ant or in
traditional make files, for example. This helps enforce company-wide development
standards and reduces the time needed to write and maintain build scripts. When you
use Maven, you describe your project using a well-defined project object model,
Maven can then apply cross-cutting logic from a set of shared (or custom) plugins. In
case of multiple development teams environment, Maven can set-up the way to work
as per standards in a very short time. As most of the project setups are simple and
reusable, Maven makes life of developer easy while creating reports, checks, build and
testing automation setups.

11. Copyright @ 2018 Learntek. All Rights Reserved. 11
For more Training Information , Contact Us
Email : info@learntek.org
USA : +1734 418 2465
INDIA : +40 4018 1306
+7799713624