Groups > comp.lang.java.programmer > #28043

compile directly into a .zip/.jar file?

From	Andreas Leitgeb <avl@auth.logic.tuwien.ac.at>
Newsgroups	comp.lang.java.programmer
Subject	compile directly into a .zip/.jar file?
Date	2014-04-12 12:30 +0000
Organization	A noiseless patient Spider
Message-ID	<slrnlkicek.bi9.avl@login.logic.tuwien.ac.at> (permalink)

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Is it possible to compile directly into a .zip/.jar file?

This may look odd, as everyone uses ant (or something alike) to do the jarring,
but the problem that I'm trying to solve is, that the (big) number of .class
files in the target folder appears to slow down things to a crawl on AIX (jfs2).

To give an impression: merely running rm -rf on the folder containing the .class
files (about 100,000) takes 13 minutes - and this is on a local filesystem.
Compiling takes 42 mins on that AIX machine, with only 20 minutes accounted
as cpu-time. (on linux, the rm takes a couple of seconds, and compiling takes
18 minutes - almost all of it accounted as cpu-time)

My hope now is, that if I could specify a zip/jar file for the -d option
(doesn't work - already tested) or something similar, then adding files
to a zip might still be faster than the sluggy OS on large directories.

PS: the "obvious" split-it-into-separate-packages is plan Z.
   Plan Y is compiling batches of 100, then adding the results to zip-file,
   and removing the .class files, then go for next batch...
   I do hope for some plans B-X, first, (where plan A was status sluggish quo.)

PPS: I'm not an expert of AIX, so if there are better filesystems than jfs2,
   or mount-options to improve performance with large directories, then that
   would also help a lot.  I know, this is not an AIX group, and my AIX
   whining was mostly to explain why I would want the javac-feature I asked for)

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compile directly into a .zip/.jar file? Andreas Leitgeb <avl@auth.logic.tuwien.ac.at> - 2014-04-12 12:30 +0000
  Re: compile directly into a .zip/.jar file? Joerg Meier <joergmmeier@arcor.de> - 2014-04-12 15:02 +0200
    Re: compile directly into a .zip/.jar file? Roedy Green <see_website@mindprod.com.invalid> - 2014-04-12 19:56 -0700
      Re: compile directly into a .zip/.jar file? Andreas Leitgeb <avl@auth.logic.tuwien.ac.at> - 2014-04-13 15:29 +0000
    Re: compile directly into a .zip/.jar file? Andreas Leitgeb <avl@auth.logic.tuwien.ac.at> - 2014-04-13 15:19 +0000
      Re: compile directly into a .zip/.jar file? Roedy Green <see_website@mindprod.com.invalid> - 2014-04-13 17:35 -0700
    Re: compile directly into a .zip/.jar file? Arne Vajhøj <arne@vajhoej.dk> - 2014-04-13 13:53 -0400
      Re: compile directly into a .zip/.jar file? Andreas Leitgeb <avl@auth.logic.tuwien.ac.at> - 2014-04-13 22:21 +0000
        Re: compile directly into a .zip/.jar file? Arne Vajhøj <arne@vajhoej.dk> - 2014-04-13 18:40 -0400
    Re: compile directly into a .zip/.jar file? Arne Vajhøj <arne@vajhoej.dk> - 2014-04-13 14:04 -0400
      Re: compile directly into a .zip/.jar file? Andreas Leitgeb <avl@auth.logic.tuwien.ac.at> - 2014-04-13 22:52 +0000
        Re: compile directly into a .zip/.jar file? Arne Vajhøj <arne@vajhoej.dk> - 2014-04-14 21:41 -0400
          Re: compile directly into a .zip/.jar file? Martin Gregorie <martin@address-in-sig.invalid> - 2014-04-15 12:51 +0000
            Re: compile directly into a .zip/.jar file? Arne Vajhøj <arne@vajhoej.dk> - 2014-04-15 20:00 -0400
              Re: compile directly into a .zip/.jar file? Martin Gregorie <martin@address-in-sig.invalid> - 2014-04-16 12:29 +0000
                Re: compile directly into a .zip/.jar file? Jeff Higgins <jeff@invalid.invalid> - 2014-04-16 10:58 -0400
                Re: compile directly into a .zip/.jar file? Jeff Higgins <jeff@invalid.invalid> - 2014-04-16 12:45 -0400
                Re: compile directly into a .zip/.jar file? Martin Gregorie <martin@address-in-sig.invalid> - 2014-04-16 19:33 +0000
                Re: compile directly into a .zip/.jar file? Jeff Higgins <jeff@invalid.invalid> - 2014-04-16 15:48 -0400
                Re: compile directly into a .zip/.jar file? Eric Sosman <esosman@comcast-dot-net.invalid> - 2014-04-16 16:20 -0400
                Re: compile directly into a .zip/.jar file? Martin Gregorie <martin@address-in-sig.invalid> - 2014-04-16 22:31 +0000
                Re: compile directly into a .zip/.jar file? Martin Gregorie <martin@address-in-sig.invalid> - 2014-04-16 18:43 +0000
                Re: compile directly into a .zip/.jar file? Arne Vajhøj <arne@vajhoej.dk> - 2014-04-16 18:33 -0400
                Re: compile directly into a .zip/.jar file? Martin Gregorie <martin@address-in-sig.invalid> - 2014-04-17 12:58 +0000
  Re: compile directly into a .zip/.jar file? Roedy Green <see_website@mindprod.com.invalid> - 2014-04-12 19:54 -0700
    Re: compile directly into a .zip/.jar file? Andreas Leitgeb <avl@auth.logic.tuwien.ac.at> - 2014-04-13 16:08 +0000
  Re: compile directly into a .zip/.jar file? Martin Gregorie <martin@address-in-sig.invalid> - 2014-04-13 23:25 +0000
    Re: compile directly into a .zip/.jar file? Arne Vajhøj <arne@vajhoej.dk> - 2014-04-14 21:40 -0400
      Re: compile directly into a .zip/.jar file? Martin Gregorie <martin@address-in-sig.invalid> - 2014-04-15 13:38 +0000
        Re: compile directly into a .zip/.jar file? Arne Vajhøj <arne@vajhoej.dk> - 2014-04-15 19:49 -0400
          Re: compile directly into a .zip/.jar file? Martin Gregorie <martin@address-in-sig.invalid> - 2014-04-16 12:38 +0000
  Re: compile directly into a .zip/.jar file? Roedy Green <see_website@mindprod.com.invalid> - 2014-04-13 17:38 -0700

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