Seems I am bit late here – but its better late than never

Very useful info. Thanks for publishing it.
But I am wondering if it can be updated, as its been a while since this was posted, & things has changed a lot.
cheers!

    <!--A target so that Netbeans users don't need to always
        sign their jars.-->
    <target name="our_jnlp">
        <subant>
            <fileset dir="." includes="build.xml" />
            <property name="jnlp.enabled" value="true" />
            <property name="is.application" value="true"/>
            <property name="generate.task.available" value="true" />
            <target name="compile" />
            <target name="jnlp" />
        </subant>
    </target>