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J2SE6 and WebStart

Subject: J2SE6 and WebStart
From: Doug Zwick <email@hidden>
Date: Wed, 30 Apr 2008 15:07:29 -0600
Delivered-to: email@hidden
Delivered-to: email@hidden

Our WebStart app has a problem with the new Java update. It seems that after installing "Java for Mac OS X 10.5 Release 1", WebStart is unable to see 32-bit JVMs on 64-bit platforms, regardless of the settings in Java Preferences. Our app specifies "1.4+" in the J2SE tag. Before the update, with the Java Preferences set for J2SE5 first, it ran correctly in the 1.5.0 32-bit VM. After applying the update, despite having "J2SE 5.0" first, then "J2SE 1.4.2", "J2SE 5.0 (64- bit)" and finally "Java SE 6 (64-bit)", it attempts to run our app in 1.5.0 64-bit. This is a problem because we have a number of JNI libraries that are 32-bit only, without which the app might as well not run at all.

Any thoughts? I've already logged this with Apple via Bug Reporter.

The JNLP file is fairly sizable, I will attempt to post only the relevant sections:

<jnlp
  spec="1.0+"
  codebase=...>
  <information>
    <title>...</title>
    <vendor>Elluminate Inc.</vendor>
    <description>...</description>
    <icon href="...128.gif"/>
  </information>
  <security>
    <all-permissions/>
  </security>
  <resources os="Windows Linux SunOS Mac\ OS\ X">
    <property name="apple.laf.useScreenMenuBar" value="true"/>
    <property
	name="apple.awt.window.position.forceSafeProgrammaticPositioning"
	value="false"/>
    <j2se version="1.4+" initial-heap-size="32m" max-heap-size="96m"/>
    <jar href="....jar" main="true"/>
    <jar href="....jar"/>
    ...
  </resources>
  <resources os="Mac\ OS\ X" arch="ppc">
    <nativelib href="....jar"/>
    ...
  </resources>
  <resources os="Mac\ OS\ X" arch="i386">
    <nativelib href="....jar"/>
  </resources>
  <resources os="Windows">
    <nativelib href="....jar"/>
    ...
    <jar href="....jar"/>
  </resources>
  ...
  <application-desc main-class="com.elluminate.live.academic.Main">
    <argument>...</argument>
    <argument>...</argument>
  </application-desc>
</jnlp>

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