From a module it is pusssible to specify dependencies to java system classes like this:

    <dependencies>

        <system export="true">   

            <paths>   

                <path name="com/sun/org/apache/xml/internal/utils"/>

            </paths>

        </sytem>

    </dependencies>

In a WAR file's MANIFERST.MF file I can spedify dependencies to modules like this

        Dependencies: com.itextpdf

But how do I specify a dependency to a system class in WAR files? With classpath attribute?