build.xml

<project default="jar">

    <path id="dest.classpath">
        <fileset dir="lib" >
            <include name="*.jar" />
        </fileset>
    </path>

    <target name="clean">
        <delete dir="build"/>
    </target>

    <target name="compile">
        <mkdir dir="build/classes"/>
        <javac srcdir="src" destdir="build/classes">
            <classpath refid="dest.classpath" />
        </javac>
    </target>

    <target name="jar" depends="compile">
        <mkdir dir="build/jar"/>
        <jar destfile="build/jar/GameAgent.jar" basedir="build/classes">
        </jar>
    </target>

    <target name="run" depends="jar">
        <java classname="jade.Boot" fork="true">
            <arg value="-gui"/>
            <arg value="-local-host"/>
            <arg value="127.0.0.1"/>
            <classpath>
               <pathelement location="build/jar/GameAgent.jar"/>
            </classpath>
            <classpath refid="dest.classpath" />
        </java>
    </target>

</project>