String html = "<html><body><div><h1>Hello, World!</h1></div></body></html>";
Source source = new Source(html);
Element element = source.getElementById("div");
String text = element.getTextExtractor().toString();
System.out.println(text);
List<Element> elements = source.getAllElements("div.myClass");
Source source = new Source(html);
Element element = source.getElementById("div");
element.setAttributeValue("class", "newClass");
System.out.println(source.toString());