Re: java on the as400

["Dave Wall" <dawall@xxxxxxxxxx>]

I can answer 1 and 4.

>> Hi,
>> I am writing a platform independent application in java that will be
used
>> on NT, Unix and AS400. Some of the AS400 team are reluctant to use newer
>> technology. I have some questions that may help ease their concerns:
>>
>> 1) Is a licence required for the JDK on the AS400? The OS400 release is
>> V4R5, the operators have already loaded JDK1.3 onto the machine along
with
>> the AS400 toolbox.
Java is a no-charge feature of the operating system.  It is a separate
licensed
program and is available only as a licensed program (you cannot download
it off the web someplace as a set of jars and bins), but there is no extra
charge for it.

>>
>> 2) I am using the Xerces parser, Xalan for XSLT and javax. I downloaded
>> these from the Apache site and loaded them onto the AS400. Is a license
>> required for any of these tools? Are they "Production" release?
>>
>> 3) Is there any extra overhead using java to other languages such as rpg
on
>> the AS400? Will it hog the machine!? The application will be a batch
>> process that runs continuously, waiting for messages arriving on an
>> MQSeries queue, the messages will be transformed from XML to delimited
>> format and the results placed in files on the IFS. A separate process
also
>> submitted to run in batch (default priority-50), will continuously poll
an
>> IFS directory looking for files that will be converted from delimited
>> format to XML and sent out as MQSeries messages.
>>
>> 4) Is there a difference between iSeries and regular AS400? Does Java
work
>> well on a regular AS400?
In the short term the difference is branding.  On day x the sticker on the
box
said AS/400.  On day x + 1 the sticker on the box said iSeries.  Much of
the
hardware is the same and they both run operating system, OS/400.  AS/400
runs
Java just as well as iSeries does.  As time goes on the difference
increases,
and over time and the iSeries will become clearly better.  All
enhancements,
both hardware and software, are only in the iSeries brand.  Over time
iSeries will become better, faster, and cheaper.
>>
>> Thanks in advance,
>> Pat O'Dowd


David Wall
AS/400 Toolbox for Java