An example of loading and compiling the JAVADOCS for the PAWN project. The critical line is

<packageset dir="./" defaultexcludes="no"/>

Here is a whole example

  <target name="javadoc">
    <mkdir dir="${doc}"/>
    <javadoc 
	    classpathref="classpath" 
	    packagenames="net.jxta.*"
	    destdir="${doc}" 
	    header="${header}" 
	    doctitle="${windowtitle}" 
	    windowtitle="${windowtitle}">
	    <packageset dir="./" defaultexcludes="no"/>
     </javadoc>
  </target>