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Re: Is it legal to backport code from JDK8 to JDK6?

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From Eric Sosman <esosman@comcast-dot-net.invalid>
Newsgroups comp.lang.java.programmer
Subject Re: Is it legal to backport code from JDK8 to JDK6?
Date Mon, 30 Mar 2015 14:06:08 -0400
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On 3/30/2015 7:37 AM, Haddock wrote:
>
> JDK8 has some new class LinkedTransferQueue which has much better performance than LinkedBlockingQueue. For various reasons I can't change to JDK8. So I would like to backport the JDK8 LinkedTransferQueue to JDK6. My question is whether there could be any legal problem with that or whether that is fine. I'm working on some open source application. So all code would be open and therefore the mater could become an issue.

     "Go not to Usenet for legal advice, for it will say both `Yes'
and `No' -- and be wrong both ways."  (Apologies to JRRT)

     The source file, too, says both `Yes' and `No'.  Right at the
top it says

     ORACLE PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.

... which sounds pretty restrictive.  But a little further down it says

     Written by Doug Lea with assistance from members of JCP JSR-166
     Expert Group and released to the public domain, as explained at
     http://creativecommons.org/publicdomain/zero/1.0/

... which suggests you can do whatever you like.  The link is to a
"human-readable summary" of a detailed legal document; for myself,
the summary seems not to clarify the case much.  It says that the
persons releasing the work to the public domain disclaim all their
rights in it, but that persons other than the releasers, if there
are any, retain all their rights, if they have any.

     So: The source file both claims and disclaims proprietary rights,
and the Creative Commons page doesn't seem to resolve the matter.
However, I (never having practiced law, nor attended law school, nor
even taken the LSAT) am confident you'll have no trouble.  I'm so
confident I'd bet your life on it.

-- 
esosman@comcast-dot-net.invalid
"Don't be afraid of work. Make work afraid of you." -- TLM

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Thread

Is it legal to backport code from JDK8 to JDK6? Haddock <ffm2002@web.de> - 2015-03-30 04:37 -0700
  Re: Is it legal to backport code from JDK8 to JDK6? Jeff Higgins <jeff@invalid.invalid> - 2015-03-30 10:04 -0400
  Re: Is it legal to backport code from JDK8 to JDK6? Jan Burse <janburse@fastmail.fm> - 2015-03-30 18:43 +0200
  Re: Is it legal to backport code from JDK8 to JDK6? Eric Sosman <esosman@comcast-dot-net.invalid> - 2015-03-30 14:06 -0400
    Re: Is it legal to backport code from JDK8 to JDK6? Jan Burse <janburse@fastmail.fm> - 2015-03-30 20:37 +0200
    Re: Is it legal to backport code from JDK8 to JDK6? Fredrik Jonson <fredrik@jonson.org> - 2015-03-31 15:58 +0000
  Re: Is it legal to backport code from JDK8 to JDK6? Sebastian <news@seyweiler.dyndns.org> - 2015-03-30 20:47 +0200
    Re: Is it legal to backport code from JDK8 to JDK6? Fredrik Jonson <fredrik@jonson.org> - 2015-03-31 16:20 +0000
      Re: Is it legal to backport code from JDK8 to JDK6? Sebastian <news@seyweiler.dyndns.org> - 2015-03-31 23:02 +0200
  Re: Is it legal to backport code from JDK8 to JDK6? Haddock <ffm2002@web.de> - 2015-04-01 11:33 -0700

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