--- build.xml.patch0	2011-06-25 18:51:06.000000000 +0200
+++ build.xml	2011-07-17 11:43:35.674747799 +0200
@@ -279,4 +279,23 @@ Build-Date: ${build.tstamp}
             <path path="${dir}"/>
         </as:check-signature>
     </target>
+
+ 
+      <target name="javadoc" description="generate javadoc documentation">
+        <javadoc
+            destdir="javadoc"
+            defaultexcludes="yes"
+            author="true"
+            version="true"
+            use="true"
+            access="protected"
+            windowtitle="josm javadoc"
+            failonerror="true">
+            <packageset dir="src">
+                <include name="org/openstreetmap/josm/gui"/>
+		<exclude name="org.xnap.*" />
+            </packageset>
+        </javadoc>
+      </target>
+ 
 </project>