Re: Declaring Java classes and methods

[Barbara Morris <bmorris@xxxxxxxxxx>]

Joe Pluta wrote:
> 
> Found it in the FAQ.
> 
> http://faq.midrange.com/data/cache/282.html
> 
> Very nice FAQ, by the way.  Now it's a business decision.  Do I really
> want to include all of that in every program?  Even though it's already
> written, my concern is that the interface may change on a subsequent
> release (like the change where you cannot start more than one JVM in a
> job).
> 

I don't think the actual interface to the JNI functions will ever
change, but by using the a service program with RPG wrappers for the JNI
functions, you can isolate your RPG programs from any interface change. 
(As far as I know, Sun hasn't changed the object management JNI
functions since JDK 1.1 of Java.  They did change the invocation API,
but not since JDK 1.2, and the change was upward compatible assuming you
had JDK 1.1 available.)

I suppose a big change like one-JVM-per-job could affect you, but
hopefully that kind of change won't happen very often.  If it did, it
would probably affect you whether or not you were doing object cleanup
in your RPG programs.