How to write file

Question

The first file is a .dat file(located at C:/Program Files/Client) I am able to read this, but I need to make it look like the 2nd file(which won't exist yet)and save it in a different location. ex C:/program Files/Microsoft/
and saved as something.ctt
//1st file (first.last.dat)
Version=3.1.3
G 289f9;80256d8c/Administrators3 Administrators O
G My;Group2 My;Group O
U william.flentje1:: william.flentje,bill.flentje
U bryan.miller1:: bryan.miller
U david.kratzer1:: david.kratzer,
U greg.mcbroom1:: greg.mcbroom,
G Test2 Test O
U kevin.leahy1:: kevin.leahy,
U marcia.lemon1:: marcia.lemon,
//2nd file to be created (first.last.ctt)
<?xml version="1.0"?>
<messenger>
<service name="Microsoft">
<contactlist>
<contact>[email protected]</contact>
<contact>[email protected]</contact>
<contact>[email protected]</contact>
<contact>[email protected]</contact>
<contact>[email protected]</contact>
<contact>[email protected]</contact>
</contactlist>
</service>
</messenger>
Below is the code I have so far.
Thank you for any help in advance
import java.awt.*;
import javax.swing.*;
import java.awt.event.*;
import java.io.*;
//import javax.swing.filechooser.FileFilter;
public class Sametime extends JFrame implements ActionListener {
     JPanel panel = new JPanel();
     JTextArea jta =
          new JTextArea(
     //Instructions for user     
               "There are a few steps that must be taken.\n"
                    + "1. Save your current List to your PC.\n    "
                    + "The default location should be: C:/Program Files/Client.\n"
                    + "2. Open the Client.\n"
                    + "3. Click on People\n"
                    + "4. Click on Save List.\n"
                    + "5. Save as your first.last.dat");
     JButton browse = new JButton("Continue");
     JButton exit = new JButton("Exit");
     public Sametime() {
          super("List Migration");
          setSize(550, 200);
          Container c = this.getContentPane();
          c.add(panel);
          browse.addActionListener(this);
          exit.addActionListener(this);
          panel.add(jta);
          panel.add(browse);
          panel.add(exit);
          jta.setEditable(false);
          setLookAndFeel();
          setVisible(true);
          setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
     } //end Sametime         
     public void actionPerformed(ActionEvent e) {
          //Location for JFileChooser default location          
          JFileChooser fc = new JFileChooser("/Program Files/Client");
          if (e.getSource() == browse) {
               int returnVal = fc.showOpenDialog(Sametime.this);
               if (returnVal == JFileChooser.APPROVE_OPTION) {
                    try {
                         StringBuffer text = new StringBuffer();// stingbuffer to hold the file text      
                         String line;// temp varial to hold a line of text from the file      
                         BufferedReader in =
                              new BufferedReader(
                                   new FileReader(fc.getSelectedFile()));
                         while ((line = in.readLine()) != null) {
                              text.append(line).append("\n");
                         in.close();
                         String textFile = text.toString();//do something with the text file text
                         System.out.println(textFile); 
                    } catch (IOException ioe) {}
                    //System.exit(0); 
               } //end if          
               if (e.getSource() == exit) {
                    System.exit(0);
               } //end if     
          } //end actionPerformed         
          public static void main(String[] args) {
               Sametime st = new Sametime();
          } //end main
          //setLookAndFeel       
          private void setLookAndFeel() {
               try {
                    UIManager.setLookAndFeel(
                         UIManager.getSystemLookAndFeelClassName());
                    SwingUtilities.updateComponentTreeUI(this);
               } catch (Exception e) {
                    System.err.println("Could not use Look and Feel:" + e);
               } //end catch     
          } //end void setLookAndFeel
     } //end public class Sametime

Answer 1

Try this:
import java.awt.*;
import javax.swing.*;
import java.awt.event.*;
import java.io.*;
import java.util.*;
import javax.xml.transform.*;
import javax.xml.transform.dom.*;
import javax.xml.transform.stream.*;
import org.w3c.dom.*;
public class Sametime extends JFrame implements ActionListener {
    public void actionPerformed(ActionEvent e) {
        //Location for JFileChooser default location       
        JFileChooser fc = new JFileChooser("/Program Files/Client");
        if (e.getSource() == browse) {
            int returnVal = fc.showOpenDialog(Sametime.this);
            if (returnVal == JFileChooser.APPROVE_OPTION) {
                try {
                    String[] contactArray = parseDatFile(fc.getSelectedFile());
                    Document document = createXMLDocument(contactArray);
                    saveToXMLFile(document, new File("C:/program Files/Microsoft/", "first.last.ctt"));
                } catch (Exception exc) {
                    exc.printStackTrace();
                //System.exit(0); 
        } //end if     
        if (e.getSource() == exit) {
            System.exit(0);
        } //end if 
    } //end actionPerformed    
    String[] parseDatFile(File datFile) throws Exception {
        List list = new ArrayList();
        BufferedReader br = new BufferedReader(new FileReader(datFile));
        String line;
        while ((line = br.readLine()) != null) {
            line = line.trim();
            if (line.indexOf("U") != 0)
                continue;
            int p0 = line.indexOf("::");
            if (p0 == -1)
                continue;
            int p1 = line.indexOf(",", p0 + 2);
            if (p1 != -1)
                line = line.substring(p0 + 2, p1);
            else
                line = line.substring(p0 + 2);
            line = line.trim() + "@d.com";
            if (list.indexOf(line) == -1)
                list.add(line);
        String[] contactArray = new String[list.size()];
        list.toArray(contactArray);
        return contactArray;
    Document createXMLDocument(String[] contactArray) throws Exception {
        DocumentBuilderFactory dBF = DocumentBuilderFactory.newInstance();
        DocumentBuilder builder = dBF.newDocumentBuilder();
        DOMImplementation domImpl = builder.getDOMImplementation();
        Document document = domImpl.createDocument(null, "messenger", null);
        Element root = document.getDocumentElement();
        Element svcElm = document.createElement("service");
        Element clElm = document.createElement("contactlist");
        svcElm.setAttribute("name", "Microsoft");
        svcElm.appendChild(clElm);
        root.appendChild(svcElm);
        for (int i = 0; i < contactArray.length; i++) {
            Element conElm = document.createElement("contact");
            Text conTxt = document.createTextNode(contactArray);
conElm.appendChild(conTxt);
clElm.appendChild(conElm);
return document;
void saveToXMLFile(Document document, File xmlFile) throws Exception {
OutputStream os = new BufferedOutputStream(new FileOutputStream(xmlFile));
TransformerFactory tFactory = TransformerFactory.newInstance();
Transformer transformer = tFactory.newTransformer();
transformer.setOutputProperty(OutputKeys.INDENT, "yes");
transformer.setOutputProperty(OutputKeys.METHOD, "xml");
transformer.setOutputProperty(OutputKeys.OMIT_XML_DECLARATION, "no");
DOMSource source = new DOMSource(document);
StreamResult result = new StreamResult(os);
transformer.transform(source, result);
} //end public class Sametime