I've been looking around for a succinct answer on this one, but I have been reading conflicting comments. I want to use the RXTX package on the Server-Side only to access my serial port (I realize there are access restrictions on the client side anyway). Some say that you can just put the .jar into the war/blah/lib directory, others say that you can reference from an external server like Tomcat (yeah, I don't know what that means yet). At present I am getting the "is not supported by Google App Engine's Java runtime environment" for my server side implementation of the Serial Port Access service I am creating. Can anyone in the ether help a rookie to GWT?
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