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Maven

Read this article to know about Maven and how to install maven. Maven is distributed in several formats for your convenience. Use a source archive if you intend to build Maven yourself. Otherwise, simply pick a ready-made binary distribution and follow the installation instructions given at the end of this document.  Maven distributed under the Apache License, version 2.0

You can download your requirement related maven version in Maven for Download. By using maven no-need to worry about the JAR's. By using Maven Repository, we can suppose to directly download Jar's. If you are using maven application in your POM.XML just you can declare jar related dependency by searching in maven repository. while running your application, that will suppose to download jar file.

System Requirement for Maven setup:

JDK: Maven 3.2 requires JDK 1.6 or above, while Maven 3.0/3.1 requires JDK 1.5 or above.

Memory: No minimum requirement.

Disk: Approximately 10 MB is required for the Maven installation itself. In addition to that, additional disk space will be used for your local Maven repository. The size of your local repository will vary depending on usage but expect at least 500 MB.

Operating System: No minimum requirement. Startup scripts are included as shell scripts and windows batch files.

Installation Steps in Windows:
  1. Unzip the distribution archive, i.e. apache-maven-3.2.1-bin.zip to the directory you wish to install Maven 3.2.1.
  2. These instructions assume you chose C:\Program Files\Apache Software Foundation.
  3. The subdirectory apache-maven-3.2.1 will be created from the archive.
  4. Add the M2_HOME environment variable by opening up the system properties, selecting the "Advanced" tab, and the "Environment Variables" button, then adding the M2_HOME variable in the user variables with the value C:\Program Files\Apache Software Foundation\apache-maven-3.2.1.
  5. Be sure to omit any quotation marks around the path even if it contains spaces. Note: For Maven 2.0.9, also be sure that the M2_HOME doesn't have a '\' as last character.
  6. In the same dialog, add the M2 environment variable in the user variables with the value %M2_HOME%\bin.
  7. Optional: In the same dialog, add the MAVEN_OPTS environment variable in the user variables to specify JVM properties, e.g. the value -Xms256m -Xmx512m. This environment variable can be used to supply extra options to Maven.
  8. In the same dialog, update/create the Path environment variable in the user variables and the value %M2% to add Maven available in the command line.
  9. In the same dialog, make sure that JAVA_HOME exists in your user variables or in the system variables and it is set to the location of your JDK, e.g. C:\Program Files\Java\jdk1.7.0_51 and that %JAVA_HOME%\bin is in your Path environment variable.
  10. Open a new command prompt (Windows + R then type cmd) and run mvn --version to verify that it is correctly installed.
Installation Steps for UNIX based OS(Linux and Mac OS):
  1. Extract the distribution archive, i.e. apache-maven-3.2.1-bin.tar.gz to the directory you wish to install Maven 3.2.1. These instructions assume you chose/usr/local/apache-maven. The subdirectory apache-maven-3.2.1 will be created from the archive.
  2. In a command terminal, add the M2_HOME environment variable, e.g. export M2_HOME=/usr/local/apache-maven/apache-maven-3.2.1.
  3. Add the M2 environment variable, e.g. export M2=$M2_HOME/bin.
  4. Optional: Add the MAVEN_OPTS environment variable to specify JVM properties, e.g. export MAVEN_OPTS="-Xms256m -Xmx512m". This environment variable can be used to supply extra options to Maven.
  5. Add M2 environment variable to your path, e.g. export PATH=$M2:$PATH.
  6. Make sure that JAVA_HOME is set to the location of your JDK, e.g. export JAVA_HOME=/usr/java/jdk1.7.0_51 and that $JAVA_HOME/bin is in your PATH environment variable.
  7. Run mvn --version to verify that it is correctly installed.

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