Build the javadoc along with the main build.
Index: spark/build.xml
===================================================================
--- spark.orig/build.xml	2010-11-29 22:21:38.272168006 +0000
+++ spark/build.xml	2010-11-29 22:26:36.220492244 +0000
@@ -47,7 +47,7 @@
     <target name="clean" description="Delete old build and dist directories">
         <delete dir="${build.home}" />
         <delete dir="${dist.home}" />
-
+	<delete dir="${basedir}/javadoc" />
         <!-- delete emacs backup files -->
         <delete>
             <fileset dir="." defaultexcludes="false" includes="**/*~" />
@@ -80,7 +80,13 @@
                 <include name="spark.tld"/>
             </fileset>
         </copy>
-    </target>
+
+        <mkdir dir="${basedir}/javadoc/"/>
+        <javadoc destdir="${basedir}/javadoc/">
+            <fileset dir="${basedir}/src/" includes="**/*.java" />
+            <link href="/usr/share/doc/default-jdk-doc/api" />
+        </javadoc>
+     </target>
 
     <target name="package" description="Packages the Web Application's web archive file" depends="build">
         <echo message="Packaging ${app.name}'s jar file ..."/>