I have recently downloaded and unzipped Maven 3.3.1 in Windows 7.

I updated my path environment variable to include 
C:\Apache\Maven\apache-maven-3.3.1\bin.  I also added a JAVA_HOME environment 
variable that points to my Java 8 JDK.  And created both an M2_HOME and M2 
environment variable.

When I enter mvn - -version on the command line I get the following:

H:\>mvn --version
Usage: java [-options] class [args...]
           (to execute a class)
   or  java [-options] -jar jarfile [args...]
           (to execute a jar file)
where options include:
    -d32          use a 32-bit data model if available
    -d64          use a 64-bit data model if available
    -server       to select the "server" VM
                  The default VM is server.

    -cp <class search path of directories and zip/jar files>
    -classpath <class search path of directories and zip/jar files>
                  A ; separated list of directories, JAR archives,
                  and ZIP archives to search for class files.
    -D<name>=<value>
                  set a system property
    -verbose:[class|gc|jni]
                  enable verbose output
    -version      print product version and exit
    -version:<value>
                  require the specified version to run
    -showversion  print product version and continue
    -jre-restrict-search | -no-jre-restrict-search
                  include/exclude user private JREs in the version search
    -? -help      print this help message
    -X            print help on non-standard options
    -ea[:<packagename>...|:<classname>]
    -enableassertions[:<packagename>...|:<classname>]
                  enable assertions with specified granularity
    -da[:<packagename>...|:<classname>]
    -disableassertions[:<packagename>...|:<classname>]
                  disable assertions with specified granularity
    -esa | -enablesystemassertions
                  enable system assertions
    -dsa | -disablesystemassertions
                  disable system assertions
    -agentlib:<libname>[=<options>]
                  load native agent library <libname>, e.g. -agentlib:hprof
                  see also, -agentlib:jdwp=help and -agentlib:hprof=help
    -agentpath:<pathname>[=<options>]
                  load native agent library by full pathname
    -javaagent:<jarpath>[=<options>]
                  load Java programming language agent, see java.lang.instrument

    -splash:<imagepath>
                  show splash screen with specified image
See http://www.oracle.com/technetwork/java/javase/documentation/index.html for 
more details.

However, when I change to any of the following three directories:

C:\Windows
C:\Windows\System32
C:\Apache\Maven\apache-maven-3.3.1\bin

and enter mvn - -version on the command line I get the following:

C:\Apache\Maven\apache-maven-3.3.1\bin>mvn --version
Apache Maven 3.3.1 (cab6659f9874fa96462afef40fcf6bc033d58c1c; 
2015-03-13T16:10:27-04:00)
Maven home: C:\Apache\Maven\apache-maven-3.3.1\bin\..
Java version: 1.8.0_31, vendor: Oracle Corporation
Java home: C:\Program Files\Java\jdk1.8.0_31\jre
Default locale: en_US, platform encoding: Cp1252
OS name: "windows 7", version: "6.1", arch: "amd64", family: "dos"

If I run mvn - -version from any other directory I get the same results as 
reported when I run from H:\.


Michael Tarullo
Contractor (Engility Corp)
Enterprise Architect
NSRR System Administrator
FAA WJH Technical Center
(609)485-5294

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