how to install maven in window 7 Steps:

1. download the maven form https://maven.apache.org/download.cgi (poffice website) 2.unzip the maven binary folder and save into any floder (good : save in the program files in c drive )
2. Check environment variable value open command prompt and type echo %java_home% its should display path of the jdk like : C:\Program Files\Java\jdk1.8.0_102 if not displayed set the environment variable java_home

Set the environment variables using system m2_home : set the path of the folder where its stored maven_home : same as above set the path Adding to PATH: Add the unpacked distribution’s bin directory to your user PATH environment variable path:%m2_home%\bin

To verify open the command prompt and type mvn -version should display this message Apache Maven 3.3.3 (7994120775791599e205a5524ec3e0dfe41d4a06; 2015-04-22T04:57:37-07:00) Maven home: /opt/apache-maven-3.3.3 Java version: 1.8.0_45, vendor: Oracle Corporation Java home: /Library/Java/JavaVirtualMachines/jdk1.8.0_45.jdk/Contents/Home/jre Default locale: en_US, platform encoding: UTF-8 OS name: "mac os x", version: "10.8.5", arch: "x86_64", family: "mac

some time it will not display because mvn folder not running with the admin access make running as administrator