public void insertPerson(Document doc,
String name,String phone,String email) {
Element personNode = doc.createElement("person");
Element nameNode = doc.createElement("name");
personNode.appendChild(nameNode);
Text nametextNode = doc.createTextNode(name);
nameNode.appendChild(nametextNode);
Element phoneNode = doc.createElement("phone");
personNode.appendChild(phoneNode);
Text phonetextNode = doc.createTextNode(phone);
phoneNode.appendChild(phonetextNode);
Element emailNode = doc.createElement("email");
personNode.appendChild(emailNode);
Text emailtextNode = doc.createTextNode(email);
emailNode.appendChild(emailtextNode);
Element root = doc.getDocumentElement();
Node firstChildNode = root.getFirstChild();
root.insertBefore(personNode,firstChildNode);
}