public static void xpath(Document document, String xpathExp, int kk) {
long start = System.currentTimeMillis();
XPath xpath = document.createXPath(xpathExp);
for (int ii = 0; ii < kk; ii++) {
Node node = xpath.selectSingleNode(document);
if ((node != null) & (ii == 0)) {
String val = node.getStringValue();
// System.out.println("xpath OK:"+val);
}