Vector installed = getInstalledUpdates();
Iterator iterator = installed.iterator();
while (iterator.hasNext()) {
UpdatePackage u = (UpdatePackage) iterator.next();
url += "&p=" + u.getPackageId();
}
URL u = new URL(url);
URLConnection urlConn = u.openConnection();
urlConn.setAllowUserInteraction(false);
urlConn.setUseCaches (false);
UpdateCollection coll = (UpdateCollection) unmar.unmarshal( new InputStreamReader(urlConn.getInputStream()));
ret = coll.getUpdatePackageList();