XML Parsing With DOM and XPath

Document Object Model (DOM)
W3C XML Path Language (XPath)

import java.io.ByteArrayInputStream;
import java.io.InputStream;

import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import javax.xml.xpath.XPath;
import javax.xml.xpath.XPathConstants;
import javax.xml.xpath.XPathExpression;
import javax.xml.xpath.XPathFactory;

import org.w3c.dom.Document;
import org.w3c.dom.NodeList;


public class Main {

  public static void main(String[] args) throws Exception {
    DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
    factory.setNamespaceAware(true);
    DocumentBuilder builder = factory.newDocumentBuilder();
    
    StringBuilder sb = new StringBuilder();
    sb.append("<?xml version=\"1.0\" encoding=\"UTF-8\"?>")
        .append("<root name=\"attr\">")
        .append("<name>TEST XML</name>")
        .append("<user>")
        .append("<name>Solnone</name>")
        .append("</user>")        
        .append("</root>");
    byte[] buf = sb.toString().getBytes("UTF-8");
    InputStream is = new ByteArrayInputStream(buf);   
    Document doc = null;
    try {
      doc = builder.parse(is);
            
    } finally {
      is.close();
    }
    System.out.println("Encoding: " + doc.getXmlEncoding());    
    System.out.println("Root tag Name: " + doc.getDocumentElement().getTagName());    
    XPathFactory xpathFactory = javax.xml.xpath.XPathFactory.newInstance();
    XPath xpath = xpathFactory.newXPath();
    System.out.println("Xpath: //text()");
    XPathExpression expr = xpath.compile("//text()");
    NodeList nodes = (NodeList) expr.evaluate(doc, XPathConstants.NODESET);
    for (int i = 0; i < nodes.getLength(); i++) {
        System.out.println("  " + nodes.item(i).getNodeValue()); 
    }
  }

}

/*
Encoding: UTF-8
Root tag Name: root
Xpath: //text()
  TEST XML
  Solnone
*/