Groups > comp.lang.java.programmer > #9928

Re: Java 8 Lambda binary snapshot

From	Lew <lewbloch@gmail.com>
Newsgroups	comp.lang.java.programmer
Subject	Re: Java 8 Lambda binary snapshot
Date	2011-11-13 11:08 -0800
Organization	http://groups.google.com
Message-ID	<19033321.210.1321211320120.JavaMail.geo-discussion-forums@prew38> (permalink)
References	<j9k23f$u03$1@dont-email.me> <j9mqdf$1cb$1@dont-email.me> <4ebeee82$0$292$14726298@news.sunsite.dk> <j9ncnf$bbd$1@dont-email.me> <utuvb7hshnd5v0en4emhnitsu5rnu77e8m@4ax.com>

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Roedy Green wrote:
> IBM salesmen loved to talk about upward and downward compatibility. 
> The IBM mainframers were very serious about ensuring even extremely
> old code would continue to run, even if it took multiple layers of
> emulation. 1410 emulation was still running in the 1990s, long after
> 1410 boxes lived only in museums.  Again, I am not sure what they
> meant by the terms. I think they used them synonyms for "good" and
> "reliable".
> 
> If there is a consensus, I will do a entry in the glossary on the
> matter.

Backward compatibility is when the new platform runs old code, just as those serious IBM mainframers promised.  In other words, it's when the Java 8 platform runs Java 7- code.  Forward compatibility is when new code runs on the old platform, just as neither IBM nor Java have ever promised.  Never.

The complaint was that Java 8 code doesn't run under Java 7.  That's forward compatibility.  Java 7 doesn't run under 6, 6 doesn't run under 5, 5 doesn't run under 1.4, just try running code with an 'assert' under Java 1.3, forget about using 'ArrayList' in Java 1.1!

Ooh, surprise!  New features don't run on old engines!  File a bug!

It's never been different.

-- 
Lew

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Thread

Java 8 Lambda binary snapshot markspace <-@.> - 2011-11-11 12:55 -0800
  Re: Java 8 Lambda binary snapshot Lew <lewbloch@gmail.com> - 2011-11-11 16:20 -0800
    Re: Java 8 Lambda binary snapshot markspace <-@.> - 2011-11-11 16:38 -0800
      Re: Java 8 Lambda binary snapshot Arved Sandstrom <asandstrom3minus1@eastlink.ca> - 2011-11-12 06:36 -0400
        Re: Java 8 Lambda binary snapshot Arne Vajhøj <arne@vajhoej.dk> - 2011-11-12 09:19 -0500
          Re: Java 8 Lambda binary snapshot Lew <lewbloch@gmail.com> - 2011-11-12 10:07 -0800
            Re: Java 8 Lambda binary snapshot Arne Vajhøj <arne@vajhoej.dk> - 2011-11-12 17:09 -0500
            Re: Java 8 Lambda binary snapshot Arved Sandstrom <asandstrom3minus1@eastlink.ca> - 2011-11-14 06:25 -0400
              Re: Java 8 Lambda binary snapshot Lew <lewbloch@gmail.com> - 2011-11-14 06:45 -0800
                Re: Java 8 Lambda binary snapshot Robert Klemme <shortcutter@googlemail.com> - 2011-11-14 23:28 +0100
                Re: Java 8 Lambda binary snapshot Arne Vajhøj <arne@vajhoej.dk> - 2011-11-15 20:34 -0500
                Re: Java 8 Lambda binary snapshot Lew <lewbloch@gmail.com> - 2011-11-15 22:28 -0800
                Re: Java 8 Lambda binary snapshot BGB <cr88192@hotmail.com> - 2011-11-16 07:43 -0700
                Re: Java 8 Lambda binary snapshot kensi <kensi_kensington@zoonoses.de> - 2011-11-16 12:53 -0500
                Re: Java 8 Lambda binary snapshot "Nasser M. Abbasi" <nma@12000.org> - 2011-11-16 12:20 -0600
                Re: Java 8 Lambda binary snapshot BGB <cr88192@hotmail.com> - 2011-11-16 14:27 -0700
                Re: Java 8 Lambda binary snapshot Lew <lewbloch@gmail.com> - 2011-11-16 14:04 -0800
                Re: Java 8 Lambda binary snapshot BGB <cr88192@hotmail.com> - 2011-11-17 10:05 -0700
                Re: Java 8 Lambda binary snapshot Arne Vajhøj <arne@vajhoej.dk> - 2011-11-16 18:57 -0500
        Re: Java 8 Lambda binary snapshot Arne Vajhøj <arne@vajhoej.dk> - 2011-11-12 09:23 -0500
    Re: Java 8 Lambda binary snapshot Roedy Green <see_website@mindprod.com.invalid> - 2011-11-13 09:12 -0800
      Re: Java 8 Lambda binary snapshot Arne Vajhøj <arne@vajhoej.dk> - 2011-11-13 12:39 -0500
        Re: Java 8 Lambda binary snapshot Andreas Leitgeb <avl@gamma.logic.tuwien.ac.at> - 2011-11-13 20:13 +0000
          Re: Java 8 Lambda binary snapshot Arne Vajhøj <arne@vajhoej.dk> - 2011-11-13 15:43 -0500
            Re: Java 8 Lambda binary snapshot Andreas Leitgeb <avl@gamma.logic.tuwien.ac.at> - 2011-11-13 21:06 +0000
              Re: Java 8 Lambda binary snapshot Arne Vajhøj <arne@vajhoej.dk> - 2011-11-13 16:16 -0500
        Re: Java 8 Lambda binary snapshot "Nasser M. Abbasi" <nma@12000.org> - 2011-11-14 08:03 -0600
          Re: Java 8 Lambda binary snapshot Lew <lewbloch@gmail.com> - 2011-11-14 06:51 -0800
  Re: Java 8 Lambda binary snapshot Roedy Green <see_website@mindprod.com.invalid> - 2011-11-12 04:53 -0800
  Re: Java 8 Lambda binary snapshot markspace <-@.> - 2011-11-12 14:02 -0800
    Re: Java 8 Lambda binary snapshot Arne Vajhøj <arne@vajhoej.dk> - 2011-11-12 17:09 -0500
      Re: Java 8 Lambda binary snapshot markspace <-@.> - 2011-11-12 19:14 -0800
        Re: Java 8 Lambda binary snapshot BGB <cr88192@hotmail.com> - 2011-11-12 20:56 -0700
        Re: Java 8 Lambda binary snapshot Lew <lewbloch@gmail.com> - 2011-11-13 05:08 -0800
        Re: Java 8 Lambda binary snapshot Arne Vajhøj <arne@vajhoej.dk> - 2011-11-13 10:08 -0500
          Re: Java 8 Lambda binary snapshot markspace <-@.> - 2011-11-13 08:08 -0800
            Re: Java 8 Lambda binary snapshot Arne Vajhøj <arne@vajhoej.dk> - 2011-11-13 12:23 -0500
        Re: Java 8 Lambda binary snapshot Roedy Green <see_website@mindprod.com.invalid> - 2011-11-13 09:23 -0800
          Re: Java 8 Lambda binary snapshot Arne Vajhøj <arne@vajhoej.dk> - 2011-11-13 12:27 -0500
          Re: Java 8 Lambda binary snapshot Lew <lewbloch@gmail.com> - 2011-11-13 11:08 -0800

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