Puoi provare con questo esempio. L'ho scritto un po' in fretta prendendolo da applicazioni gia' fatte, perdona eventuali errori
<project name="myProject" default="dist" basedir=".">
<description>
myProject application build and distribution. (c) 2006 Sottovento
</description>
<!-- Set global properties for distrtool build -->
<property name="src" value="src" />
<property name="build" value="build" />
<property name="dist" value="dist" />
<property name="api" value="api" />
<property name="options" value="options" />
<!-- Preparing classpath with needed libraries -->
<path id="project.class.path">
<pathelement path="${lib}/app.jar" />
<pathelement path="${lib}/commonLib.jar" />
</path>
<!-- Preparing classpath with needed libraries -->
<path id="project.build.class.path">
<pathelement path="${build}" />
</path>
<!-- First target, initialising -->
<target name="init">
<!-- Create the time stamp -->
<tstamp/>
<!-- Create the directory structure used by compile and for final distribution -->
<mkdir dir="${build}" />
<mkdir dir="${dist}" />
</target>
<!-- Compiling targets -->
<target name="compile" depends="init" description="Compile all the sources" >
<!-- Compile the java code from ${src} into ${build} -->
<javac srcdir="${src}" destdir="${build}">
<classpath refid="project.class.path" />
</javac>
</target>
<!-- Copy the macro files in distribution directory. ... -->
<target name="copy" description="Copy needed files into distribution directory" >
<echo message="needed files to ${dist}" />
<copy file="neededFile1.dat" todir="${dist}"/>
<copy file="neededFile2.dat" todir="${dist}"/>
<sync todir="${dist}/icons">
<fileset dir="${options}/icons"/>
</sync>
</target>
<!-- Preparing manifest file -->
<target name="manifest" depends="compile" description="Prepare manifest file" >
<mkdir dir="${build}/META-INF" />
<manifest file="${build}/META-INF/MANIFEST.MF">
<attribute name="Built-By" value="ME" />
<attribute name="Company" value="Downwind AG"/>
<attribute name="Content" value="My application - It's wonderful!"/>
<attribute name="Main-Class" value="de.downwind.mypackage.MainClass" />
<attribute name="Class-Path" value=". myapplication.jar" />
</manifest>
<echo message="Created directory ${build}/META-INF" />
</target>
<!-- Preparing distribution -->
<target name="dist" depends="compile, manifest, copy" description="Code distribution preparation" >
<!-- Create distribution directory, if any -->
<mkdir dir="${dist}" />
<!-- Put everything in ${build} into the distrtool.jar file -->
<jar destfile="${dist}/myapplication.jar" basedir="${build}"
manifest="${build}/META-INF/MANIFEST.MF" >
<exclude name="${build}/META-INF/**" />
</jar>
<echo message="Created jar file ${dist}/myapplication.jar" />
</target>
<!-- Target for cleanup build directories -->
<target name="clean" description="Clean up" >
<!-- Delete the ${build} and ${dist} directory trees -->
<delete dir="${build}" />
<delete dir="${dist}" />
<delete dir="${build}/META-INF" />
</target>
<!-- Target for javadoc generation -->
<target name="doc" description="Generate Javadoc documentation" >
<mkdir dir="${api}" />
<javadoc packagenames="de.downwind.mypackage.*"
sourcepath="${src}"
classpathref="project.class.path"
destdir="${api}"
author="true"
version="true"
use="true"
private="true"
windowtitle="My Application API documentation" />
</target>
</project>