JAVA XML 생성 두번째 [DOM]

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package hufs.File;

import org.w3c.dom.*;
import javax.xml.parsers.*;
import javax.xml.transform.*;
import javax.xml.transform.dom.*;
import javax.xml.transform.stream.StreamResult;
import javax.xml.transform.OutputKeys;

import java.io.*;
import java.util.Date;

public class XmlManager {

 private Document doc;
 private Element fileList;
 private Element file;
 private Element name;
 private Element size;
 private Element update;
 private Element path;
 private Element format;
 private String str = "";
 private StreamResult result;
 private Writer writer;
 private DocumentBuilderFactory docFactory;
 private DocumentBuilder builder;
 private String xmlRoot = "./Server/Xml/";
 private String type;

 FileListManager fileListManager;

 public XmlManager(String name) {

  this.type = name;

  writer = new StringWriter();
  result = new StreamResult(writer);

 }

 public boolean exist() { // xml 존재유무

  File file = new File(xmlRoot + type + ".xml");

  if (file.isFile())
   return true;
  else
   return false;

 }

 public void update() { // xml 생성

  initial();
  getXml();
 }

 public void initial() { // 초기화

  try {

   docFactory = DocumentBuilderFactory.newInstance();
   builder = docFactory.newDocumentBuilder();
   doc = builder.newDocument();

   fileList = doc.createElement("fileList");
   fileList.setAttribute("file", "root");

  } catch (Exception ex) {
   System.out.println(ex);
  }

 }

 public void getXml() { // xml element 생성

  String name = null;
  long size;
  Date update;
  String path = null;
  String format = null;

  fileListManager = new FileListManager();
  fileListManager.search(); // 파일 검색
  while (true) { // Node 생성

   if (!fileListManager.exist()) // boolean
    break;

   name = fileListManager.getname();
   size = fileListManager.getsize();
   update = fileListManager.getdate();
   path = fileListManager.getpath();
   format = fileListManager.getformat();

   setElement(name, size, update, path, format);

  }

  saveXml(); // save

 }

 public void setElement(String ename, long esize, Date eupdate,
   String epath, String eformat) {

  file = doc.createElement("file");

  name = doc.createElement("name");
  name.appendChild(doc.createTextNode(ename));
  file.appendChild(name);

  size = doc.createElement("size");
  size.appendChild(doc.createTextNode("" + esize));
  file.appendChild(size);

  update = doc.createElement("update");
  update.appendChild(doc.createTextNode("" + eupdate));
  file.appendChild(update);

  path = doc.createElement("path");
  path.appendChild(doc.createTextNode(epath));
  file.appendChild(path);

  format = doc.createElement("format");
  format.appendChild(doc.createTextNode(eformat));
  file.appendChild(format);

  fileList.appendChild(file);

 }

 public void saveXml() { // xml 파일로 저장

  try {

   doc.appendChild(fileList);

   StringWriter sw = new StringWriter();

   TransformerFactory tFactory = TransformerFactory.newInstance();
   Transformer trans = tFactory.newTransformer();

   trans.setOutputProperty(OutputKeys.INDENT, "yes");
   trans.setOutputProperty(OutputKeys.METHOD, "xml");
   trans.setOutputProperty(OutputKeys.ENCODING, "euc-kr");

   trans.transform(new DOMSource(doc), new StreamResult(System.out));
   trans.transform(new DOMSource(doc), result);
   trans.transform(new DOMSource(doc), new StreamResult(
     new FileWriter(xmlRoot + type + ".xml")));

   str = writer.toString();
  } catch (Exception ex) {

   System.out.println(ex);

  }
 }

}