frank's homepage

<for param="file">
    <path>
        <fileset dir="lib" includes="**/*.jar"/>
    </path>
    <sequential>
        <antcall target="unsignjar">
            <param name="jar" value="@{file}"/>
        </antcall>
        <signjar
            jar="@{file}"
            alias="myalias"
            storepass="mypass"
            keystore="keystore"/>
    </sequential>
</for>