> We are currently using Java 1.2.2_10 and iPlanet
> Webserver 4.1. We are planning to upgrade to Java
> 1.3.
Why only to 1.3? It's soon dead. I don't see a point in upgrading to that version.
> We need to know if Java 1.3 supports iPlanet
> Webserver 4.1. If not what is the nearest version of
> iPlanet to which we have to upgrade.
Why not upgrade to the latest version?
Sun just declared Java 1.3 to be at EOL (End Of Life) as of December 2006, when they released 1.6.
The trouble you would go through to upgrade to 1.3 would not be worth it if you can upgrade to at least 1.4 and save yourself future headaches.
You really should consider upgrading your web server as well to a later version that declares support for a later version of Java.