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From Nic Ferrier <nferr...@tapsellferrier.co.uk>
Subject jar task
Date Tue, 15 Jan 2002 10:48:33 GMT

Hello Ant people! I've just joined this list and would like to say
"hi!" to all those old friends from the JServ years.

Second, a caveat: I'm no Ant expert but I couldn't find this problem
discussed in the archives. Also, some of my ways of doing things might
be a bit naive.


Now the problem, I'm using ant 1.4.1 (built 11 Oct 2001) and have a
problem with the jar task.


It's building the jar in a rather unusual way.

Here's the task:

<project ...>
    ...

    <target name="some_jar" 
        <jar jarfile="${lib}/some.jar" 
             basedir="${lib}"
             includes="uk/co/somepackage/**" />
    </target> 

</project>


The directory ${lib} contains the built classes in the
uk.co.sompackage package.

The jarfile I get as a result of this is really wierd, it looks like this:

M     Length  Date         Time      File
-  --------  -----------  --------  ----------------------------
          0  15-Jan-2002  10:29:58  meta-inf/
         48  15-Jan-2002  10:29:58  meta-inf/manifest.mf
          0  14-Jan-2002  11:55:50  uk/
          0  14-Jan-2002  11:55:50  uk/co/
          0  14-Jan-2002  11:55:50  uk/co/somepackage/
          0  14-Jan-2002  11:55:50  uk/co/somepackage/subpack1/
          0  14-Jan-2002  11:55:50  uk/co/somepackage/subpack2/
        159  14-Jan-2002  11:55:50  uk/co/somepackage/C1.class
       2063  14-Jan-2002  11:55:50  uk/co/somepackage/subpack1/C2.class
       3051  14-Jan-2002  11:55:52  uk/co/somepackage/subpack2/C3.class



Note that the directories have been created and then the files. This
is not content I would expect to see; if I used the command line I'd
expect the jar file to look like this:

M     Length  Date         Time      File
-  --------  -----------  --------  ----------------------------
          0  15-Jan-2002  10:29:58  meta-inf/
         48  15-Jan-2002  10:29:58  meta-inf/manifest.mf
          0  14-Jan-2002  11:55:50  uk/
          0  14-Jan-2002  11:55:50  uk/co/
          0  14-Jan-2002  11:55:50  uk/co/somepackage/
        159  14-Jan-2002  11:55:50  uk/co/somepackage/C1.class
          0  14-Jan-2002  11:55:50  uk/co/somepackage/subpack1/
       2063  14-Jan-2002  11:55:50  uk/co/somepackage/subpack1/C2.class
          0  14-Jan-2002  11:55:50  uk/co/somepackage/subpack2/
       3051  14-Jan-2002  11:55:52  uk/co/somepackage/subpack2/C3.class


It looks like ANT is creating the directories first and then adding
the class files later.

"Is this important?" I hear you ask. Well, yes it is because I can't get the
ANT generated jar file to load in java.

For example:

   Class.forName("uk.co.somepackage.C1");

causes a class not found exception when using the jar file created by
ANT. It's fine when I use the jar created with the command line.


I know I must be doing something wrong because I've used 1.4.1 to
generate jar files before... Does anyone have any idea what is going on?


More information: the jdk is 1.3.1-b24 on Windows.


Nic Ferrier



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