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Re: J/Link problem on Mac OS X

  • To: mathgroup at
  • Subject: [mg55366] Re: J/Link problem on Mac OS X
  • From: Mike <m.HoneychurcNOSPAMh at>
  • Date: Sun, 20 Mar 2005 04:11:59 -0500 (EST)
  • Organization: University of Queensland
  • References: <> <d1gudr$r9$>
  • Sender: owner-wri-mathgroup at


All is now working.



On 19/3/05 8:20 PM, in article d1gudr$r9$1 at, "Todd Gayley"
<tgayley at> wrote:

> At 05:44 AM 3/18/2005, Mike Honeychurch wrote:
>> Todd,
>> I'm referring to the version number of the application, i.e.
>> When you click on "get info" you find that the file was created on 26th Feb
>> and the version is J/Link version 3.0.1 copyright 2004 Wolfram Research Inc.
>> So while the package says version 3.0.2 the actual J/Link application within
>> the package says 3.0.1
> Mike,
> I apologize for any version number confusion. The update to J/Link 3.0.2
> involved adding a single line of code and I see that there are a couple
> places where I failed to update embedded revision numbers. J/Link reveals
> its version information via the JLink`Information` context, and that is
> really the authoritative, portable way to determine the revision you are
> using. Rest assured that you do have 3.0.2.
>> By the way if this really is a Mac OS X problem how come I can run J/Link
>> applications using version 5 on the same computer that I cannot run J/Link
>> applications using version 5.1?
> Because J/Link 3.0 is very different from J/Link 2.1.
> Anyway, I think Igor has hit the nail on the head with his reply. You don't
> have the "10.3.8" problem for which J/Link 3.0.2 was created. You probably
> have the same problem (and the fix) as the user in the link he cited
> ( That
> problem will occur when users copy parts of J/Link into their
> ~/Library/Java/Extensions/ folder. This is a bad idea in general because it
> is certain to lead to problems like this every time you update J/Link. The
> Extensions folder is always examined first by the OS/X Java runtime, so it
> will load the old version of JLink.jar, which is not going to work with the
> newer JLink.m file.
> Todd Gayley
> Wolfram Research

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