xml script fot build "fat jar" java package

<!--
Source: https://dzone.com/articles/how-build-fat-jar-using

to the build.xml file, paste the contents of the build_fat_jar.txt file before
          end tag of the main project </project>
          in line: <property name="store.jar.name" value=""/>
          in the value field, enter the name of the file you want to be generated
          WITHOUT EXTENSION and save
          then go to the Files tab, right click on
          build.xml file and select: Run Target | Other Targets | package-for-store
          ... and done
          compiled .jar package containing all linked libraries
          will be in the /store directory of the main project
-->
<target name="package-for-store" depends="jar">

        <!-- Change the value of this property to be the name of your JAR,
             minus the .jar extension. It should not have spaces.
             <property name="store.jar.name" value="MyJarName"/>
        -->
        <property name="store.jar.name" value="SucharOfTheDay_fat"/>


        <!-- don't edit below this line -->

        <property name="store.dir" value="store"/>
        <property name="store.jar" value="${store.dir}/${store.jar.name}.jar"/>

        <echo message="Packaging ${application.title} into a single JAR at ${store.jar}"/>

        <delete dir="${store.dir}"/>
        <mkdir dir="${store.dir}"/>

        <jar destfile="${store.dir}/temp_final.jar" filesetmanifest="skip">
            <zipgroupfileset dir="dist" includes="*.jar"/>
            <zipgroupfileset dir="dist/lib" includes="*.jar"/>

            <manifest>
                <attribute name="Main-Class" value="${main.class}"/>
            </manifest>
        </jar>

        <zip destfile="${store.jar}">
            <zipfileset src="${store.dir}/temp_final.jar"
            excludes="META-INF/*.SF, META-INF/*.DSA, META-INF/*.RSA"/>
        </zip>

        <delete file="${store.dir}/temp_final.jar"/>

    </target>