build.xml

<?xml version="1.0" encoding="UTF-8"?>
<project name="java-ant-project-sample" default="default" basedir="."
         xmlns:ivy="antlib:org.apache.ivy.ant">

    <description>
        Ant Build file
    </description>

    <!-- set global properties for this build -->
    <property name="project.name" value="java-ant-project-sample"/>
    <property name="src.dir" location="src"/>
    <property name="build.dir" location="classes"/>
    <property name="lib.dir" value="lib"/>
    <property name="target" location="target"/>
    <property name="target.lib" location="target/lib"/>
    <property name="main-class" value="com.javawithant.sample.Main"/>

    <!-- Creates lib dir if not exists -->
    <mkdir dir="${lib.dir}"/>

    <!-- clean directories build (.classes) and target (.jar or .war) -->
    <target name="clean" description="clean up build directory">
        <delete dir="${build.dir}"/>
        <delete dir="${target}"/>
        <delete dir="out"/>
    </target>

    <target name="cleanIvyCache" description="clean ivy cache">
        <ivy:cleancache/>
    </target>

    <target name="ivy" description="Install ivy">
        <mkdir dir="${user.home}/.ant/lib"/>
        <get dest="${user.home}/.ant/lib/ivy.jar"
             src="http://search.maven.org/remotecontent?filepath=org/apache/ivy/ivy/2.5.0/ivy-2.5.0.jar"/>
    </target>

    <target name="install" depends="cleanIvyCache, ivy" description="retrieve dependencies with Ivy">
        <ivy:retrieve sync="true" pattern="${lib.dir}/[conf]/[artifact]-[type]-[revision].[ext]"/>
        <path id="build.path">
            <fileset dir="${lib.dir}" includes="**/*.jar"/>
        </path>
    </target>

    <path id="classpath">
        <pathelement path="${build.dir}"/>
        <fileset dir="${lib.dir}" includes="**/*.jar"/>
    </path>

    <target name="compile" description="compile the source">
        <mkdir dir="${build.dir}"/>
        <javac srcdir="${src.dir}" destdir="${build.dir}" encoding="UTF-8" debug="true" fork="true"
               classpathref="classpath"
               includeantruntime="false"/>
    </target>

    <target name="run">
        <java fork="true" failonerror="yes" classname="com.javawithant.sample.Main">
            <classpath>
                <pathelement location="${build.dir}"/>
            </classpath>
        </java>
    </target>

    <!-- ========== JAR + LIB ========== -->
    <!-- constructs the external libraries classpath name  -->
    <!--         <pathconvert property="classpath.name" pathsep=" ">-->
    <!--            <path refid="classpath" />-->
    <!--            <mapper>-->
    <!--                <chainedmapper>-->
    <!--                    <flattenmapper />-->
    <!--                    <globmapper from="*.jar" to="${lib.dir}/*.jar" />-->
    <!--                </chainedmapper>-->
    <!--            </mapper>-->
    <!--        </pathconvert>-->

    <!--        <target name="copydep">-->
    <!--            <copy todir="${target.lib}">-->
    <!--                <fileset dir="${lib.dir}" includes="**/*.jar" />-->
    <!--            </copy>-->
    <!--        </target>-->

    <!--        <target name="jar" depends="compile, copydep" description="package, output to
    JAR">-->

    <!--            <echo message="classpath.name : ${classpath.name} " />-->

    <!--            <mkdir dir="${target}" />-->
    <!--            <mkdir dir="${target.lib}" />-->

    <!--            <jar jarfile="${target}/${project.name}.jar" basedir="${build.dir}">-->
    <!--                <manifest>-->
    <!--                    <attribute name="Main-Class" value="${main-class}" />-->
    <!--                    <attribute name="Class-Path" value="${classpath.name}" />-->
    <!--                </manifest>-->
    <!--            </jar>-->
    <!--        </target>-->

    <!-- ========== FAT JAR ========== -->
    <!--     Unify dependencies on a big dependency-all.jar-->
    <target name="copy-dependencies">

        <mkdir dir="${target.lib}"/>

        <jar jarfile="${target.lib}/dependencies-all.jar" zip64Mode="always">
            <zipgroupfileset dir="${lib.dir}">
                <include name="**/*.jar"/>
            </zipgroupfileset>
        </jar>

    </target>

    <!--  jar and then extract dependency-all.jar and zip it with project files -->
    <target name="jar" depends="compile, copy-dependencies" description="package, output to JAR">

        <mkdir dir="${target}"/>
        <mkdir dir="${target.lib}"/>

        <jar jarfile="${target}/${project.name}.jar" basedir="${build.dir}" zip64Mode="always">
            <manifest>
                <attribute name="Main-Class" value="${main-class}"/>
            </manifest>
            <zipfileset src="${target.lib}/dependencies-all.jar" excludes="META-INF/*.SF"/>
        </jar>

    </target>

    <!-- <target name="target" depends="clean, compile, jar" /> -->

</project>