Groups > comp.lang.java.programmer > #22438

Re: two JARs

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On 21/02/13 22:30, bob smith wrote:
> I downloaded the JBox2d library, and I see that there are two JARs: one that ends in the name "sources" and one that doesn't.
>
>
> jbox2d-library-2.1.2.3-sources.jar
> jbox2d-library-2.1.2.3.jar
>
>
> Can someone help me understand exactly what a seasoned Java programmer would expect to be in each of these JARs?  I'm a little confused.  I don't know which one to use.

To look inside a jar file you can use the jar application distributed 
with your jdk

jar -tf <filename> from a terminal prompt lists the contents of a jar 
file to standard out by default

on my Linux system I would do

$ jar -tf jbox2d-library-2.1.2.3.jar > foo.txt

this would  dump the listing into a text file that I could inspect later
I imagine Windows has a similar redirection feature.

You don't need winzip or foojar or winjar or winfoo or any other piece 
of frippery, your jdk comes with everything you need.

I would expect jbox2d-library-2.1.2.3.jar to contain .class files plus 
possibly some optional properties or config files

I would expect jbox2d-library-2.1.2.3-sources.jar to contain .java 
source files.

Now wait a minute ... yep, that's what I see. There is some maven crap 
in the library but the source jar is all java source code.

You would use jbox2d-library-2.1.2.3.jar in your classpath.

BTW you can also use jar to unpack zip files.

HTH

lipska

-- 
Lipska the Kat©: Troll hunter, sandbox destroyer
and farscape dreamer of Aeryn Sun

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two JARs bob smith <bob@coolfone.comze.com> - 2013-02-21 14:30 -0800
  Re: two JARs Knute Johnson <nospam@rabbitbrush.frazmtn.com> - 2013-02-21 14:44 -0800
    Re: two JARs Knute Johnson <nospam@rabbitbrush.frazmtn.com> - 2013-02-21 14:58 -0800
      Re: two JARs Arved Sandstrom <asandstrom2@eastlink.ca> - 2013-02-21 19:12 -0400
        Re: two JARs markspace <markspace@nospam.nospam> - 2013-02-21 15:34 -0800
          Re: two JARs Arved Sandstrom <asandstrom2@eastlink.ca> - 2013-02-21 19:45 -0400
            Re: two JARs markspace <markspace@nospam.nospam> - 2013-02-21 16:29 -0800
  Re: two JARs Roedy Green <see_website@mindprod.com.invalid> - 2013-02-21 15:25 -0800
    Re: two JARs Lew <lewbloch@gmail.com> - 2013-02-21 18:25 -0800
      Re: two JARs Roedy Green <see_website@mindprod.com.invalid> - 2013-02-21 23:59 -0800
        Re: two JARs Magnus Warker <warker@mailinator.com> - 2013-02-22 11:38 +0100
        Re: two JARs Arne Vajhøj <arne@vajhoej.dk> - 2013-02-22 10:26 -0500
      Re: two JARs lipska the kat <"nospam at neversurrender dot co dot uk"> - 2013-02-22 09:24 +0000
        Re: two JARs Arne Vajhøj <arne@vajhoej.dk> - 2013-02-22 10:56 -0500
          Re: two JARs lipska the kat <"nospam at neversurrender dot co dot uk"> - 2013-02-22 16:24 +0000
            Re: two JARs Lars Enderin <lars.enderin@telia.com> - 2013-02-22 18:54 +0100
              Re: two JARs lipska the kat <"nospam at neversurrender dot co dot uk"> - 2013-02-22 18:38 +0000
            Re: two JARs Arne Vajhøj <arne@vajhoej.dk> - 2013-02-22 14:15 -0500
        Re: two JARs Lew <lewbloch@gmail.com> - 2013-02-22 11:15 -0800
          Re: two JARs lipska the kat <"nospam at neversurrender dot co dot uk"> - 2013-02-22 19:47 +0000
            Re: two JARs Arne Vajhøj <arne@vajhoej.dk> - 2013-02-22 15:05 -0500
              Re: two JARs lipska the kat <"nospam at neversurrender dot co dot uk"> - 2013-02-23 08:44 +0000
                Re: two JARs Lew <lewbloch@gmail.com> - 2013-02-23 11:36 -0800
                Re: two JARs lipska the kat <"nospam at neversurrender dot co dot uk"> - 2013-02-23 20:03 +0000
                Re: two JARs Lew <lewbloch@gmail.com> - 2013-02-23 12:32 -0800
      Re: two JARs Martin Gregorie <martin@address-in-sig.invalid> - 2013-02-23 18:46 +0000
        Re: two JARs Lars Enderin <lars.enderin@telia.com> - 2013-02-23 23:30 +0100
          Re: two JARs Arne Vajhøj <arne@vajhoej.dk> - 2013-02-24 13:38 -0500
  Re: two JARs lipska the kat <"nospam at neversurrender dot co dot uk"> - 2013-02-22 09:05 +0000

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