Switching from MS VM to Sun VM on an IIS web server.

Question

Good day,
I can easily switch back and forth from Sun's JRE to MS VM on my browser, no problem there.
However, what is the procedure to indicate to IIS to use the Sun's VM instead of the MS one ?
I've search different forums, but couldn't find precise information.
Could not find anything informative on MS site either.
Regards.

Answer 1

Steve,
To summarize, here are the main lines.
Let say I have a class, which has few methods in it and I want to use these methods to process some information via an ASP page for instance.
1) Given the following code as an example :
// ============================================
import java.io.*;
  public class javacomp {
  public String Diagnose() {
    return "Diagnose() - javacomp : Class accessed successfully !";
}2) I compile it, then put the resulting class in the TrustLib sub-directory of the server, normally "%system%\java\trustblib".
(The compile was done using jsdk v1.4.2_01 with "-target 1.1")
3) Once the class is in place, and IIS re-cycled if the class was re-compiled between accesses, I then invoke the method(s) via an ASP page using VBScript.
<%
  Set javaObject = GetObject("java:javacomp")
  strResult = javaObject.Diagnose()
  set javaObject=nothing
  Response.Write strResult & "<br><br>"
%>On my Win98SE/PWS based computer, this is working just fine. When I tried it on a Win2K Server box, it worked fine as well. I asked my web hosting service technician to put it on their system, they aggreed, however it doesn't work, but the reason is still unknown to me.
With the actual setup, IIS or PWS are using the default MS VM to run the "servlet", which is the VM installed my MS JAVA SDK v4.0. MS VM supports only Java 1.1 classes, explaining why the methods are working as planned.
The actual class I want to put in place, is a class with methods allowing to zip/unzip gzip/ungzip files. Version 1.4 introduced the "setModifiedDate()" which I want to use when extracting or decompressing the files from the archive files. The thing is that a server Java VM v1.4 is necessary to run the code, since the "setModifiedDate()" is not available in earlier versions.
As far as adding packages like JRun or Tomcat, this could induce unnecessary overhead. Also, the Win2K box I'm using for test purposes, is not a computer assigned to host sites, so doing tests with only one site is irrevelant for performance evaluations.
On the other hand, the box where the "final" site resides on has roughly 460 sites on it, so the addition of any additional element needs to be weighted carefully, not to stay very difficult to justify for 1 user out of 460. Re-cycling the whole box and disabling JRun or Tomcat because of the overhead during the middle of the day would not be an appreciated action either.
The approach I would suggest to the web hosting service is to install the latest Java VM machine from Sun, and use it as the one by default for the server. Before doing so, I want to do tests on the server for which I have access to as an administrator, preventing chaos at the web hosting place in case something does not go as expected.
Having a procedure that can somehow automate/minimize the delays when switching between the VM machines would a need be necessary, would be much more appreciated than a "...you can try this, or that..." approach.
Also, having the web hosting service to install JRun or Tomcat to accomodate my needs is less likely to happen, however updating the server's VM could be something possible, knowing that MS will no longer update their's, which haven't been updated/optimized for a while anyhow.
Hoping this is clarifying my idea.
Regards.