package xml; import org.w3c.dom.Document; import org.w3c.dom.Node; import org.w3c.dom.NodeList; import org.xml.sax.SAXException; import javax.xml.parsers.DocumentBuilder; import javax.xml.parsers.DocumentBuilderFactory; import javax.xml.parsers.ParserConfigurationException; import javax.xml.xpath.XPath; import javax.xml.xpath.XPathConstants; import javax.xml.xpath.XPathExpressionException; import javax.xml.xpath.XPathFactory; import java.io.File; import java.io.IOException; public class XPathLesson { public static void main(String[] args) throws ParserConfigurationException, IOException, SAXException, XPathExpressionException { DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance(); DocumentBuilder builder = factory.newDocumentBuilder(); Document document = builder.parse(new File("prop.xml")); XPathFactory xPathFactory = XPathFactory.newInstance(); XPath xpath = xPathFactory.newXPath(); System.out.println(xpath.evaluate("/preferences/root/node/node/node/map", document)); System.out.println(xpath.evaluate("/preferences/root/node/node/node/map[2]", document)); System.out.println(xpath.evaluate("count(/preferences/root/node/node/node/map)", document)); NodeList list = (NodeList) xpath.evaluate("/preferences/root/node/node/node/map", document, XPathConstants.NODESET); Node node = (Node) xpath.evaluate("/preferences/root/node/node/node/map[2]", document, XPathConstants.NODE); int count = ((Number)xpath.evaluate("count(/preferences/root/node/node/node/map)", document, XPathConstants.NUMBER)).intValue(); } }