Hi Markus

Here is the statement about -jar option in the java docs

    -jar  Executes a program encapsulated in a JAR archive.  The
          first  argument is the name of a JAR file instead of a
          startup class name.
           In order for this option to work, the manifest of the
          JAR  file  must  contain  a  line  of  the  form Main-
          Class:classname. Here, classname identifies the  class
          having  the  public  static  void  main(String[] args)
          method that  serves  as  your  application's  starting
          point.  See  the  Jar  tool reference page and the Jar
          trail of the Java Tutorial for information about work-
          ing  with  Jar  files and Jar-file manifests. When you
          use this option, the JAR file is  the  source  of  all
          user  classes,  and other user class path settings are
          ignored.

The last sentence explains your scenario

-H

If you use a jar the classpath has to go INSIDE The jar.  See
http://mindprod.com/jgloss/jar.html

The alternative is to put your aux jars in the ext directory.

See http://mindprod.com/jgloss/classpath.html