Apache Commons CLI - ordering help options?
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I'm using the Apache Commons CLI. By default it orders help options on the command line alphabetically by key. So, what appears is:

    -csv
    -ip
    -msisdn
    -xml

But I want to order them as follows:

    -csv
    -xml
    -ip
    -msisdn

I know that there is a OptionFormatter class you can use and pass to the HelpFormatter, but can't see any examples on how to use it for my purposes above (http://www.marko.homeunix.org/programming/java/commons-cli/api/org/apache/commons/cli/HelpFormatter.OptionComparator.html).

Just wondering has anyone done anything similar?

Thanks