title: Checking Maven Version
body: <p>I have just installed maven.
  I downloaded distributive, extracted files and set bin value environment variables, but when I type <code>mvn -version</code>  in CMD I am getting message:</p>
  
  <blockquote>
    <p>'mvn' is not recognized as an internal or external command, <br/>
    operable program or batch file.</p>
  </blockquote>
  
  <p>I am writing project. I have one project DatabaseAPI where I have logic of database and POJO classes. second project is CoreAPI where I have some methods. For DatabaseAPI I make a jar file using eclipse (export -> jar). In core I add external jar (DatabaseAPI.jar). For CoreAPI I make a jar file using eclipse (export -> jar). In core I add external jar (CoreAPI.jar) and I tried to start tomcat (I have servlets in my project and swing too). I got error during starting and error is <code>ClassNotFoundException</code> (One of the classes in CoreAPI did not find). Is it problem of exporting using Eclipse ? </p>