build.xml

<?xml version="1.0" encoding="utf-8"?>
<project name="testlib4j" default="compile-src" basedir=".">
    <property name="build.dir" location="build"/>
    <property name="deploy.dir" location="deploy"/>

    <property name="src.source.dir"   location="src"/>
    <property name="src.build.dir"    location="${build.dir}/src"/>
    <property name="tests.source.dir" location="tests"/>
    <property name="tests.build.dir"  location="${build.dir}/tests"/> 
    <property name="examples.dir"     location="examples"/>
    <property name="examples.tmp.dir" location="${examples.dir}/tmp"/>

    <path id="src.deps">
        <pathelement location="${src.build.dir}"/>
    </path>

    <target name="init">
        <tstamp>
            <format property="DSTAMP" pattern="yyyy-MM-dd" locale="US"/>
        </tstamp>
        <mkdir dir="${build.dir}"/>
        <mkdir dir="${deploy.dir}"/>
    </target>

    <target name="clean">
        <delete dir="${build.dir}"/>
        <delete dir="${deploy.dir}"/>
        <delete>
            <fileset dir="${examples.dir}" includes="*.jar"/>
        </delete>
    </target>
    
    <target name="compile-src" depends="init">
        <mkdir dir="${src.build.dir}"/>
        <javac
            srcdir="${src.source.dir}"
            destdir="${src.build.dir}"
            encoding="utf-8"
            includeantruntime="false"
        >
            <compilerarg value="-Xlint:unchecked"/>
        </javac>
        <jar destfile="${deploy.dir}/testlib4j.jar" basedir="${src.build.dir}"/>
    </target>

    <target name="compile-examples" depends="compile-src">
        <mkdir dir="${examples.tmp.dir}"/>

        <!-- CompareNumber.java -->
        <javac srcdir="${examples.dir}" destdir="${examples.tmp.dir}" includeantruntime="false">
            <include name="CompareNumber.java"/>
            <classpath refid="src.deps"/>
        </javac>
        <jar destfile="${examples.dir}/CompareNumber.jar" basedir="${examples.tmp.dir}"/>

        <delete dir="${examples.tmp.dir}"/>
    </target>
</project>