help configuring Web Start / Java Preferences to include JRE 1.3.1

(Mac OS X 10.4.9, Java Preferences ver 11.5.0)

I have Java 1.5.0, 1.4.2, and 1.3.1 installed on new Intel Mac Pro. When I try to access a "legacy" intranet application (AppWorx) that requires JRE 1.3.1, I get an error message:

An error occurred while launching/running the application.

Title: AISX AppWorx Client

Vendor: AppWorx Corporation

Category: System Configuration

The application has requested a version of the JRE (version 1.3.1 1.3.0) that currently is not locally installed. Java Web Start is unable to automatically download and install the requested version. This JRE must be installed manually.

These are the installed Java versions:

l /System/Library/Frameworks/JavaVM.framework/Versions

total 40

lrwxr-xr-x1 root wheel5 Feb 26 17:04 1.3@ -> 1.3.1

drwxr-xr-x8 root wheel 272 Feb 20 07:25 1.3.1/

lrwxr-xr-x1 root wheel5 Feb 26 17:04 1.4@ -> 1.4.2

drwxr-xr-x8 root wheel 272 Feb 20 07:24 1.4.2/

lrwxr-xr-x1 root wheel5 Feb 26 17:04 1.5@ -> 1.5.0

drwxr-xr-x8 root wheel 272 Feb 20 07:25 1.5.0/

drwxr-xr-x5 root wheel 170 Mar 19 09:20 A/

lrwxr-xr-x1 root wheel1 Feb 26 17:04 Current@ -> A

lrwxr-xr-x1 root wheel3 Feb 26 17:04 CurrentJDK@ -> 1.5

The .jnlp file specifies JRE 1.3.0 or 1.3.1:

<resources>

<j2se version="1.3.1 1.3.0"/>

<jar href="UserWorx.jar"/>

<jar href="AppWorxLang.jar"/>

<extension name="AppWorxClientExtensions" href="../AppWorxClientExtensions.jnlp">

</extension>

<extension name="AppWorxClientSSLExtensions" href="../AppWorxClientSSLExtensions.jnlp">

</extension>

<extension name="AppWorxClientJHExtensions" href="../AppWorxClientJHExtensions.jnlp">

</extension>

</resources>

<security> <all-permissions/> </security>

When I launch J2SE 5.0 "Java Preferences.app", it only says 1.5.0 and 1.4.2 are installed.

How do I configure the 1.5 Java Web Start to recognize 1.3.1 ?

[2107 byte] By [bmolletta] at [2007-11-26 22:20:41]
# 1
See if the advice on this page helps.. http://www.physci.org/jws/version.html
AndrewThompson64a at 2007-7-10 11:17:54 > top of Java-index,Desktop,Deploying...
# 2

thanks Andrew. The Apple version of Java Control Panel for 1.5 doesn't have an equivalent to "JNLP Preferences" tab ... that's exactly what I'm looking for ...

Well - I think I found the answer to my problem:

http://developer.apple.com/java/faq/development.html#anchor1 says "Please note that Java 1.3 is not supported on Intel-based Macs; J2SE 1.4 and 5.0 (1.5) are supported. "

oh well ...

bmolletta at 2007-7-10 11:17:54 > top of Java-index,Desktop,Deploying...