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Patrick At 11:09 AM 11/16/97 -0800, you wrote: >Hi Chris, > >I've looked at the IBM Java Toolkit and I've been wondering about some >things related to the Java strategy for the AS/400: > >The JVM in the Java Toolkit lacks support for AWT. Without AWT, exactly >how will developers write native Java applets for the AS/400 that can >port to other platforms? Are you referring to the pre-release JVM from Hursley, or to the AS/400 Toolkit for Java? The former does not have support for AWT, true, but the 400 does not have native graphical ability. (I _do_ believe that it might be possible, however, to support AWT, even on a green screen, by using analogous display paradigms—subfiles for list boxes, etc., or use UIM or the display APIs. JMHO!) OTOH, the Toolkit is a set of JavaBeans and other classes. These beans are fully usable in VA for Java's visual development environment. >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. It's important, I believe, to distinguish between Java itself (the JVM) and classes written in Java. A Java app using the data queue classes _will_, of course, be specific to the 400. But this is NOT the same as the statement that this particular app can run on any platform with a JVM (and probably AWT). The same issue exists for any client/server situation, where you need to decide, in the design, whether to write it so that various backend platforms will be accessed or not. >There are probably Billions of dollars invested by customers in green >screen applications. How will IBM help customers retain the value of >this investment via the Java implementation on the AS/400? Good question. But see my first comment above. >I'm glad the AS/400 division is working with Java but I'm worried that >it will be a half-hearted effort that forgets the incredible investment >already made by IBM's midrange customers. If the effort results in a >poor implementation it will turn out to be just another reason why >developers will leave the AS/400 platform. >From everything I'm hearing, this effort is hardly half-hearted. But we do have reasons to be a little wary, too. Cheers Vernon Hamberg Systems Software Programmer Old Republic National Title Insurance Company 400 Second Avenue South Minneapolis, MN 55401 (612) 371-1111 x480 +--- | 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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