re: Java applets

["Chris Rehm" <Mr.AS400@xxxxxxx>]

>Clearly the point of hooking JAVA into RPG is to allow legacy code to come
>forward easily.  If they don't deliver on the EASILY part, then what they
>are doing will be a waste of time.

Java has functionality for accessing what are referred to as "native
methods". This would allow a Java program to call an RPG program as one of
it's methods. 

This sort of thing is frowned upon by Java purists as it makes the Java
application non portable (since it must have a native method on whatever
platform it is running). However, this would be suitable for calling
legacy apps from Java ones until conversion can be accomplished. 

Of course, IBM can use the same utility that they use for converting
programs to convert legacy code to pcode. If they did that, you could
convert the old objects in your existing RPG and CL libraries to Java byte
codes and package them with your Java apps. That would eliminate the need
for native methods. This would work the same as the conversion to RISC
when you load CISC objects. 



>Al Barsa, Jr. - Account for Midrange-L
>Barsa Consulting, LLC. 
>400 > 390

Phone:  914-251-9400
Fax:    914-251-9406





Private mail should be sent to barsa@ibm.net
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Chris Rehm
Mr.AS400@ibm.net
You have to ask yourself, "How often can I afford to be unexpectedly out of 
business?" 
Get an AS/400.
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