What's the proper use of the QName object?

[Barry Lulas <Ba...@BristolWest.com>]

I have a ws that has an execute method, which both takes and returns a
java.lang.String.  In my test client, I call the setOperationName, passing
the QName object, which has been created like the following:

call.setOperationName(new QName("http://soapinterop.org/", "execute"));

There is only one example of this I cannot find any documentation on this
object.  Is this correct?  What is the first parameter?  I realize the
second is the name of my method...

Thanks!