client smtp java avec interface utilisateur

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import java.util.*;
import java.awt.*;
import java.util.*;
import javax.swing.*;
import javax.swing.border.*;
import java.awt.event.*;
import java.io.*;
import java.net.*;



public class Gsmtp extends JFrame
{


  class smtpClient extends Thread {

    private String server, message, dest, origin;
    private int port;
    private Socket socket;

    public smtpClient (String serv, int por, String org)
    {
      server = serv;
      port = por;
      origin = org;
    }

    public void createMsg(String dst, String msg)
    {
      message = msg;
      dest = dst;

    }

    public void run()
    {
      PrintWriter to;
      BufferedReader from;
      String str;

      try {
        socket = new Socket(InetAddress.getByName(server),port);

        to = new PrintWriter(
                    new BufferedWriter (
                        new OutputStreamWriter (
                            socket.getOutputStream())),true);
        from = new BufferedReader(
                   new InputStreamReader (
                            socket.getInputStream()));

        str = from.readLine();
        to.println("helo plus.bas");
          status.setText(from.readLine());
        to.println("mail from: <"+origin+">");
          status.setText(from.readLine());
        to.println("rcpt to: <"+dest+">");
          status.setText(from.readLine());
        to.println("data");
          status.setText(from.readLine());
        to.println(message + "\r\n.\r\n");
          status.setText(from.readLine());

        status.setText("Ready ...");

        socket.close();

      } catch ( Exception e ) {}


    }

  }

  public class SmtpServerDialog extends JDialog
  {
    JTextField hostTF, portTF;

    public SmtpServerDialog(Frame parent, boolean modal)
    {
      super(parent, modal);

      JPanel panel1, panel3;
      JButton okButton, cancelButton;

      Container contentPane = this.getContentPane();

      panel1 = new JPanel();
      panel1.setLayout(new FlowLayout(FlowLayout.CENTER));
      contentPane.add(panel1, BorderLayout.SOUTH);
      okButton = new JButton("OK");
      panel1.add(okButton);
      cancelButton = new JButton("Cancel");
      panel1.add(cancelButton);

      panel3 = new JPanel();
      panel3.setLayout(new FlowLayout(FlowLayout.CENTER));
      contentPane.add(panel3, BorderLayout.CENTER);
      hostTF = new JTextField(smtpServer, 20);
      portTF = new JTextField("" + port, 5);
      panel3.add(hostTF);
      panel3.add(portTF);

      setTitle("Smtp Server info");
      pack();


      cancelButton.addActionListener(new ActionListener(){
        public void actionPerformed(ActionEvent event)
        {
          dispose();
          setVisible(false);
        }
      });

      okButton.addActionListener(new ActionListener(){
        public void actionPerformed(ActionEvent event)
        {
          smtpServer = hostTF.getText();
          port = Integer.parseInt(portTF.getText());
          dispose();
          setVisible(false);
        }
      });

    }
  }

  private String smtpServer = "fmsmsx18.intel.com";
  private int port = 25;

  private JLabel status = new JLabel("Ready...");
  private JTextField AddrDest = new JTextField(10);
  private JTextField AddrOrg = new JTextField(10);

  private JTextArea Jbody = new JTextArea(10,30);

  public Gsmtp ()
  {
    JMenuBar menuBar = new JMenuBar();
    JButton closeButton = new JButton("Close");

    JPanel statusbar = new JPanel();
    JPanel Core = new JPanel();
    JPanel Result = new JPanel();
    JScrollPane SPbody;

    Core.setLayout(new BorderLayout());
    Result.setLayout(new BorderLayout());

    Container contentPane = this.getContentPane();
    contentPane.setLayout(new BorderLayout());

    setJMenuBar(menuBar);

    JMenu fMenu = new JMenu("File");
    menuBar.add(fMenu);

    JMenuItem smtpServerItem = new JMenuItem("Set Smtp Server", 2);
    fMenu.add(smtpServerItem);
    fMenu.addSeparator();
    JMenuItem exitItem = new JMenuItem("Exit", 2);
    fMenu.add(exitItem);

    statusbar.setLayout(new FlowLayout(FlowLayout.LEFT,5,5));
    statusbar.setBorder(new BevelBorder(BevelBorder.LOWERED));
    contentPane.add(statusbar,BorderLayout.SOUTH );
    statusbar.add(status);


    JPanel url = new JPanel(new FlowLayout());

    JButton getButton = new JButton("Send");

    url.add(  new JLabel("To :") ); url.add( AddrDest );
    url.add(  new JLabel("From :") ); url.add( AddrOrg );
    url.add(getButton);

    Core.add(url, BorderLayout.NORTH);

    SPbody = new JScrollPane(Jbody,
                             JScrollPane.VERTICAL_SCROLLBAR_ALWAYS,
                             JScrollPane.HORIZONTAL_SCROLLBAR_ALWAYS);
    Result.add(new JSeparator());
    Result.add(SPbody, BorderLayout.SOUTH);

    Core.add(Result, BorderLayout.SOUTH);

    contentPane.add(Core);


    // add listeners for the window and the various buttons
    this.addWindowListener( new WindowAdapter(){
         public void windowClosing(WindowEvent e){
              setVisible(false);
              dispose();
              System.exit(0);
    }});

    exitItem.addActionListener( new ActionListener(){
         public void actionPerformed(ActionEvent e){
              System.exit(0);
    }});

    getButton.addActionListener(new ActionListener(){
            public void actionPerformed(ActionEvent e){
            send();
    }});

    smtpServerItem.addActionListener(new ActionListener(){
            public void actionPerformed(ActionEvent e){
            changeSmtpServer();
    }});

    pack();

  }

  protected void changeSmtpServer()
  {
    new SmtpServerDialog(this, true).show();
  }

  private void send()
  {
    smtpClient sc = new smtpClient(smtpServer, port, AddrOrg.getText());

    sc.createMsg(AddrDest.getText(), Jbody.getText());

    sc.run();
  }

  public static void main ( String args[] )
  {
    (new Gsmtp()).setVisible(true);

  }

}