Listening socket class freezes my program

Question

i originaly created a listening socket in my main gui class but everytime i execute it, my gui appears with no visible components inside and freezes. i am not able to close the gui window by clicking on the x button at teh top right hand corner.
i then removed my listening socket and made a new class altogether that listens to socket connection. i get the same problem when i execute both my gui and listening socket class. any suggestions?
heres my socket listening class
package icomm;
import java.net.*;
import java.io.*;
import javax.swing.*;
import java.awt.event.*;
import java.awt.*;
public class listening {
    /** Creates a new instance of listening */
    public listening() {
     public void listeningSocket()
            ServerSocket server = null;
            boolean listening = true;
            try
                //listen in port 4444;
                server = new ServerSocket(14);
            catch(IOException x)
                JOptionPane.showMessageDialog(null, "cannot listen to port 4444", null, JOptionPane.ERROR_MESSAGE);
            while(true)
                 ChatDialog w;
                try
                  w = new ChatDialog(server.accept());
                  Thread t = new Thread(w);
                  w.setVisible(true);
                  t.start();
                 // server.close();
                catch(IOException x)
                    JOptionPane.showMessageDialog(null, "could not open chat window", null, JOptionPane.ERROR_MESSAGE);
}and here is the code that launches the gui and the listening class from my login button..
//laod main gui
                    show_main_gui(text_username.getText());
                    //run listening socket
                    listening listen = new listening();
                    listen.listeningSocket();

Answer 1

you do not need any thread for this - the socket will not block your frame. here is an example which works:
import java.net.ServerSocket;
import javax.swing.JFrame;
public class Sockframe extends JFrame{
     public Sockframe(){
       super("Socket using Application");
       setDefaultCloseOperation(EXIT_ON_CLOSE);
       setSize(100,100);
      * @param args
     public static void main(String[] args) {
          // show new Frame
          Sockframe f = new Sockframe();
          f.setVisible(true);
          try{
               // do socket stuff
               ServerSocket s = new ServerSocket(4567);
               s.accept();
          } catch(Exception exc){
               exc.printStackTrace();
}Did you provide some default close operation for the frame? The frame needs this to know how to behave when the X-button os pressed.