I'm currently using a java program that works properly ONLY under java
1.3.0.  (Yes, 1.3.0)  However, the 1.3.0 JRE installer that I tucked
away on my local HD doesn't install the necessary stuff for IE to run
java applets.

If I download and install the latest Java JRE (1.4), I'm fairly
certain that my java program will break because it will be forced to
run (unfortunately) under JRE 1.4.0.

So, I need a solution.  Here are some possible directions..

1) Point me to a "Browser Plug-in Only" install of JRE 1.4.

OR

2) Find a v. 1.3.0 installer that installs the IE browser plug-ins

OR

3) Provide instructions on how to a) install both 1.3.0 and 1.40 and
b) force a particular .jar file to run under a particular JRE (1.3.0).

Note: I'm *not* seeking advice on how to recode the java program that
runs only under 1.3.0, though you're welcome to speculate... just
don't lock the question while you do.  However, I do *welcome*
instructions on how to force a .jar file to run with a specific JRE
(in this case, JRE 1.3.0.)

Thank you.

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Request for Question Clarification by maniac-ga on 08 Aug 2002 18:17 PDT

Hello donphiltrodt,

Do you want an answer specific to a particular computer system and
browser or general techniques that MAY work with any system and
browser? For example, you mention IE, but it might be easier to keep
you using IE w/ JRE 1.3 and Netscape w/ JRE 1.4.

--Maniac

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Clarification of Question by donphiltrodt-ga on 08 Aug 2002 20:42 PDT

Oops.  Thanks for pointing out my oversight.  Here's more info...

I'm running Windows XP Pro and *need* the java plug-in (1.4 is
preferred, but 1.3 is perfectly fine) for IE and do *not* need any
java plug-ins for any other browsers.

I'm seeking a solution to my specific problem/configuration.

Not an answer to your question, but just out of curiosity: what
problem(s) occurr when running your program under 1.4? I know there
were some backward compatibility problems with JDK 1.4 beta, but most
of these were solved in the final release.

You could always install both the 1.3
JSE/JRE(http://java.sun.com/j2se/1.3/download.html) and 1.4 plugin and
for your local app, be sure that:
- the JAVA_HOME environment variable (control panel - system -
advanced - environment settings) is set to the directory where you
installed 1.3
- the CLASSPATH variable is set to the 1.3 'lib' directory
- you run the jar with the "java" executable from the '1.3' bin
directory (use a full path such as "c:\jdk1.3\bin\java.exe", or make
sure the 1.3 bin dir is set in the PATH variable, while the 1.4 bin
dir is not).

Kind regards,

rhansenne-ga.

>>What problem(s) occurr when running your program under 1.4?

The program is a mail relay.  When run under 1.3.1 or higher, the
final "<CR>.<CR>" never get sent because the java relay just hangs.

I'll give your suggestions a try... they're very similar to what I've
already tried (unsuccessfully), but there are a few differences that
might be what I'm looking for.