build.xml

<?xml version="1.0"?>
<project name="AABB" default="build" basedir=".">

    <property name="app_name" value="AABB" />
    <property name="main_package" value="aabb" />
    <property name="main_class" value="Main" />
    <property name="full_main_class" value="${main_package}.${main_class}" />
    <property name="src" value="src" />
    <property name="release" value="release" />
    <property name="res_dir" value="res" />
    <property name="bin" value="bin" />

    <path id="src_path">
        <dirset dir="${basedir}">
            <include name="src"/>
        </dirset>
    </path>

    <path id="exe_path">
        <pathelement location="${bin}/${app_name}.jar" />
    </path>

    <target name="clean" description="Delete *.class">
        <delete>
            <fileset dir="${release}" includes="**/*.class" />
        </delete>
    </target>

    <target name="compile" description="Compile *.java">
	<mkdir dir="${release}" />
        <javac srcdir="${src}" destdir="${release}" debug="on">
            <src refid="src_path" />
        </javac>
    </target>

    <target name="build" depends="compile" description="Compile and create .jar file">
	<mkdir dir="${bin}" />
        <jar jarfile="${bin}/${app_name}.jar">
            <manifest>
                <attribute name="Main-Class" value="${full_main_class}" />
            </manifest>
            <fileset dir="${release}" includes="**/*.class" />
	    <fileset dir="${res_dir}" />
        </jar>
    </target>

   <target name="exe" depends="build">
      <java fork="yes" failonerror="yes" classname="${full_main_class}">
          <classpath refid="exe_path"/>
          <arg line=""/>
      </java>
   </target>

    <target name="rebuild" depends="clean, build" />

</project>