Calling all Ant developers!!!

Question

greetings to all my fellow Ant developers!!!
I would first of all like to thank all of those who helped me set up Ant. The good news is, last night I tinkered around with a few things, and it is all up and running now smiles
But I have a question about build.xml. BECAUSE, MY HSQLDB DRIVER WAS NOT BEING FOUND DUE TO A POTENTIAL DISCREPANCY BETWEEN THE BUILD.XML I WAS USING FROM THE TEXTBOOK AND THE BUILD.XML THEY USE AT THAT TEXTBOOKS WEBSITE. EVERYONE WHO TOLD ME TO CHANGE MY CLASSPATHS TO FIND THE DRIVER WERE WRONG! I HOPE THIS WAS A GENUINE MISTAKE AND NOT AN ATTEMPT TO SABOTAGE MY PROJECT!!!
anyway guys, below is the build file. The line that is different is the following line.
<include name="*.jar"/>
In the book, this line is:
<include name="**/*.jar"/>
When I use the above, it does not find the hsqldb driver. But when I use the line from the build.xml at the books website (i.e. <include name="*.jar"/>), everything is hunky dory. Can someone please explain to me why so?
Thank you guys.
Yours truly
AU
<?xml version="1.0"?>
<project name="Harnessing Hibernate: The Developer's Notebook"
default="db" basedir=".">
<!-- Set up properties containing important project directories -->
<property name="source.root" value="src"/>
<property name="class.root" value="classes"/>
<property name="lib.dir" value="lib"/>
<property name="data.dir" value="data"/>
<!-- Set up the class path for compilation and execution -->
<path id="project.class.path">
<!-- Include our own classes, of course -->
<pathelement location="${class.root}" />
<!-- Include jars in the project library directory -->
<fileset dir="${lib.dir}">
<include name="*.jar"/>
</fileset>
</path>
<target name="db" description="Runs HSQLDB database management UI
against the database file--use when application is not running">
<java classname="org.hsqldb.util.DatabaseManager"
fork="yes">
<classpath refid="project.class.path"/>
<arg value="-driver"/>
<arg value="org.hsqldb.jdbcDriver"/>
<arg value="-url"/>
<arg value="jdbc:hsqldb:${data.dir}/music"/>
<arg value="-user"/>
<arg value="sa"/>
</java>
</target>
</project>

Answer 1

In ant ** means "any path" so "**/*.jar" means any
jar files in a subdirectory under the root directory.
It wouldn't include jar files directly in the base
directory.oh. Well, this is my directory stucture.
I have
C:\Project
C:\Project\src
C:\Project\lib
C:\Project\data
my build.xml is in C:\Project
all my jars are in C:\Project\lib
When I use the build file with (the example from the printed book)
<include name="**/*.jar"/>
the hsqldb driver is not found.
When I use the build file with (the example from the books complimentary website)
<include name="*.jar"/>
it works.
Why? I do not get this!!!