That is not my experience.   Please post your jar task.  Good day,

Opalinski
opalpa@gmail.com
http://www.geocities.com/opalpaweb/

Thanks to all who responded. I found the solution; here it is for
others:

I was having trouble creating the jar from Eclipse, where the project
structure is like this:

my_project/com/my_name/package1
                                     /package2

The .class files are under package1 and package2

What I found out is you have to specify the basedir for the fileset in
the jar task as the parent dir to "com". So:

<project name="Test Build" default="main" basedir="C:\my_project">
<property name="package_root" value="com/my_name/"/>
<property name="package1_dir" value="${package_root}package1/"/>

<jar destfile="${package1_dir}package1.jar" >
   <fileset dir="${basedir}"
includes="${package1_dir}**/*.class"></fileset>
</jar>

worked for me.

Thanks!