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[snip] >> The Redbook on writing Java applications spends a lot of time describing >> the Visual Age development environment and how to write applications >> that use Data Queues, etc. on the AS/400. Since data queues are only >> supported on the AS/400 how will these Java applications really be >> platform independent? A Java application that is 100 percent Java on the >> client but not on the server is of questionable value, I would think.. > >Well, yes and no. > >First, there are a couple of reasons for the Redbook to spend a lot of time >on Data Queues, one being that it is a topic you are not likely to find >covered elsewhere. Another reason that Rochester would like you to pay >close attention to those areas is ... so that you'll need an AS/400! > >But this is not quite the same as platform dependance (it's just close).. >The application you are writing will not need to run on an AS/400, it will >just need one around to talk to. > >What you are given is a way to talk to an AS/400 in a native fashion. If >you have an AS/400 and you want to write to it's data queues, you can do >that with Java. But you don't have to. What would be a big mistake is for >IBM to NOT have a way to talk to AS/400s via data queues, as this is the >fastest way to converse with your AS/400. > Chris, This is more than a mere semantic difference. This means that I cannot transport my Java client to other platforms without re-work. This utterly defeats the much-touted "portability" gain. Why should a development house write a killer Java app twice? Once for all the PC platforms and then again for the AS/400. Clearly, the PC market is way bigger than the AS/400 market for such software. Remember, we're not talking about Java for the AS/400, we're talking about Java that runs on my Win95 PC. If it uses DTAQ's to talk to the AS/400, I'm not going to be able to pick it up and re-use it to talk to my Engineering division's Unix box unless I re-write the C/S communications over. Did I overlook something? Buck Calabro Commsoft +--- | This is the Midrange System Mailing List! | To submit a new message, send your mail to "JAVA400-L@midrange.com". | To unsubscribe from this list send email to MAJORDOMO@midrange.com | and specify 'unsubscribe JAVA400-L' in the body of your message. | Questions should be directed to the list owner/operator: david@midrange.com +---
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