Re: Java Constants in RPG

[Scott Klement <klemscot@xxxxxxxxxxxx>]

> How do I reference built in static final fields in Java objects/classes
> from RPG?

It's possible to do this using JNI calls, but it's not easy.  Personally,
I would just write some simple classes that get these fields, and then you
can just call them when you need them.  Or, if these are just constants
that'll never change, maybe create a /copy file to define the same
constants in RPG.

In case you are interested in retrieving them using JNI, here's an excerpt
from the ILE RPG Programmer's Guide:

    Accessing Fields in Java Classes

    RPG only supports calling Java methods; it does not support accessing
    Java fields. Normally, fields can be accessed through "get" and
    "set" methods, but it is also possible to access fields using JNI
    calls.

It then proceeds to give an example of using the JNI calls to get some
fields.

I found this in Chapter 11 of the ILE RPG Programmers Guide, which is
online here:
http://publib.boulder.ibm.com/iseries/v5r2/ic2924/info/rzahgrpgcode.htm

In chapter 11, I went to "RPG and Java" and then "Advanced JNI coding".
Good Luck...