String html = "<html><body><p>this is <i>html</i></body></html>";
Abdera abdera = Abdera.getInstance();
Parser parser = abdera.getParserFactory().getParser("html");
Document<Element> doc = parser.parse(new StringReader(html));
Element root = doc.getRoot();
root.writeTo(System.out);
System.out.println();
XPath xpath = abdera.getXPath();
List<Element> list = xpath.selectNodes("//i", doc.getRoot());
for (Element element : list)