<Mark>
It was my impression that original Java won't run on modern JVM's because
somewhere around Java 4 or was it Java 2, there were significant breaking
changes such that you had to have a different JVM to run the new java vs.
the old java.
</Mark>
I don't remember exactly: AppServer4RPG was written using Java 1.3 or Java
1.4. ArdGate was published in 2010 based on Java 1.4. Later on I moved to
Java5, basically to get advantage of Java generic types. Up to now it would
still run on Java 5, because my as400 used for deployment is running with
Java 5 (Os/400 V5 R2). I'm using recent java versions for development, for
deployment it's compiled with Java 5 compatibility. In test environments I'm
using recent java versions. The only problems I saw, where related to MS SQL
driver dependencies, maybe a little bit tricky, but all solvable. I didn't
receive a single bug report, related to java version problems and there are
some hundreds of installations outside.
D*B
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