Extracting HTML element with Java and XPath -

i trying extract latitude , longitude of address. here coding.

public static void main(string[] args) throws exception {    int responsecode = 0;    string api = "http://maps.googleapis.com/maps/api/geocode/xml?address=9%20edinburgh%20place,%20centrall&sensor=false&components=country:hk&language=en";              url url = new url(api);     httpurlconnection httpconnection = (httpurlconnection)url.openconnection();    httpconnection.connect();    responsecode = httpconnection.getresponsecode();    if(responsecode == 200) {        documentbuilder builder = documentbuilderfactory.newinstance().newdocumentbuilder();;        document document = builder.parse(httpconnection.getinputstream());        xpathfactory xpathfactory = xpathfactory.newinstance();        xpath xpath = xpathfactory.newxpath();              xpathexpression expr = xpath.compile("/geocoderesponse/status");        string status = (string)expr.evaluate(document, xpathconstants.string);       if(status.equals("ok")) {                expr = xpath.compile("//*[@id=\"collapsible6\"]/div[1]/div[2]/div[1]/span[2]");           object results = expr.evaluate(document, xpathconstants.nodeset);           nodelist nodes = (nodelist) results;            system.out.println(nodes.getlength());            (int = 0; < nodes.getlength(); i++){              system.out.println("latitude: " + nodes.item(i).getnodevalue());            }            expr = xpath.compile("//geometry/location/lng");           string lng = (string)expr.evaluate(document, xpathconstants.string);           system.out.println("longitude: " + lng);       } else                 throw new exception("error api - response status: "+status);          } }} 

i have copied xpath inspecting web element , tried implement latitude keeps giving me 0 nodes.getlength(); however, works longitude. if want keep html element , make use of xpath, how should code change?

it looks there error in code on line:

expr = xpath.compile("//*[@id=\"collapsible6\"]/div[1]/div[2]/div[1]/span[2]"); 

shouldn't this?

expr = xpath.compile("//geometry/location/lat");