OO Programming?

This question has been bugging me for some time now.  Here it is:

Java is known as an OO programming language but RPG is considered
procedural.  The other day I had a Java programmer explain to me that the OO
difference is not necessarily how you develop one program using a bunch of
different classes and objects but rather how they are stored in memory when
they are called.  Only one copy of a program is stored in memory in Java and
all programs making a call to that particular program are always referencing
that same one.

Is this also true for RPGILE type programming? With the advent of *SRVPGM
programs is the same thing basically happening with RPG?  From what I
understand the first initial call to a service program will load it into
memory and then leave it there for other programs to use.  Or is it just for
the length of that particular job.

I am not up on my Java or RPGILE lingo so please excuse any miss-use of
terms.

Trying to swallow the ocean one drop at a time,
Aaron Bartell

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