xml - java xpath list concatination -


i using java xpathfactory values simple xml file:

<obama>     <coolnessid>0</coolnessid>     <cars>0</cars>     <cars>1</cars>     <cars>2</cars> </obama>

with xpression //obama/coolnessid | //obama/cars result is:

0 0 1 2

from result, cannot distinguish between coolnessid , car id. need like: 

coolnessid: 0 carid: 0 carid: 1 carid: 2

with concat('c_id: ', //obama/coolnessid,' car_id: ',//obama/cars) close solution, concat cannot used list of values. unfortunately, cannot use string-join, because seems not known in xpath library. , cannot manipulate given xml.

what other tricks can use list of values alias?

if select elements rather text content you'll have context:

public static void main(string[] args) throws exception {      string xml =         "<obama>" +         "    <coolnessid>0</coolnessid>" +         "    <cars>0</cars>" +         "    <cars>1</cars>" +         "    <cars>2</cars>" +         "</obama>";      documentbuilderfactory factory = documentbuilderfactory.newinstance();     factory.setnamespaceaware(true);      document doc = factory.newdocumentbuilder().parse(new bytearrayinputstream(xml.getbytes(standardcharsets.utf_8)));     xpath xpath = xpathfactory.newinstance().newxpath();      xpathexpression expr = xpath.compile("//obama/cars | //obama/coolnessid");     nodelist result = (nodelist) expr.evaluate(doc, xpathconstants.nodeset);     (int = 0; < result.getlength(); i++) {         element item = (element) result.item(i);         system.out.println(item.gettagname() + ": " + item.gettextcontent());     } }

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