Re: Java GUI on AS/400

["Brad Sommerfeld" <devbms@xxxxxxxxxxxxxxxxxxxxxxxx>]

Vern Hamburg Wrote:

>Will I be able to take a JAVA program on the Mac, that uses GUI
>elements, and copy the object it over to the '400 and run it on a
>greenscreen w/o modifications?
> 

A few additional observations based on an IBM Java Preview Workshop I 
attended.

IBM's Native Java virtual machine will run any Java  application
including those with AWT components.  The way they will do this is
NOT from a green screen but from an attached system where the GUI
will be manipulated.  They will use Remote-AWT calls between the
AS/400 and the connected system.  The connected system could be any
system running a Java virtual machine.  I'm assuming the typical 
connection would be TCP/IP between the two systems.

At the same time, IBM has stated that you wouldn't use this
configuration to write a heads down data entry application due to
performance of remote AWT but it will work fine for occasioinal use
functions and application administrative functions.

The real value of Java on the AS/400 is as an application server for 
a distributed application.  In this case, the application you are 
moving from platform to platform is the back end server which you are 
moving to an AS/400 and using the AS/400 database using JDBC.

I am making the distinction of an application server (the back 
end of a distributed application) and a web server serving java 
applets.  I can use the AS/400 today (V3R2) as a web server to just 
serve up applets to a client.  I have to wait for V4R2 to run my Java 
developed application server.

Brad Sommerfeld
Development Manager
Silvon Software Inc.
Brad.Sommerfeld@Silvon.com
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