Thread: My instant messanger program doesn't work completely!

Hello!
I currently built a very simple chatting program by following this tutorial:
Intermediate Java - 59 - Running Buckys Instant Messenger!



But I have a problem in my instance messenger program. Here I explain:
My program runs fine, but the problem is that if I write message on the client part's chat window, it doesn't send that to server window. But the server part works good and it can send the message to the client window.
As I guess that I may have problem with the local host address: 127.0.0.1
And thats why my message can't be delevered to the server part.

The codes from my program are shown below: All codes from server and client parts including their main classes are given in the "java code" box

/*
 
[COLOR="#008000"]Server program:[/COLOR]
 
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 */
package im;
 
import java.io.*;
import java.net.*;
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
 
/**
 * /**
 * /**
 * /**
 * /**
 * /**
 *
 * @author Jabir Al Fatah
 */
public class Server extends JFrame {
 
    private JTextField usertext;
    private JTextArea chatWindow;
    private ServerSocket server;
    private Socket connection;
    private ObjectOutputStream output;
    private ObjectInputStream input;
    private String ms;
    //ms= "Please wait to get connection...";
 
    public Server() {
        super("ICool Messanger");
 
 
        usertext = new JTextField();
        usertext.setEditable(false);
        usertext.addActionListener(
                new ActionListener() {
            public void actionPerformed(ActionEvent event) {
                sendMessage(event.getActionCommand());
                usertext.setText("");
            }
        });
        add(usertext, BorderLayout.NORTH);
        chatWindow = new JTextArea();
        add(new JScrollPane(chatWindow));
        setSize(400, 300);
        setVisible(true);
 
    }
    //This codes are for setting up and running the server.
 
    public void startRunning() {
 
        try {
            server = new ServerSocket(6789, 100);
            while (true) {
                try {
                    waitForConnection();
                    setUpStream();
                    whileChatting();
 
 
                } catch (EOFException eofException) {
                    showMessage("\n The connection is ended");
                } finally {
                    closeCrap();
                }
            }
 
        } catch (IOException ioException) {
            ioException.printStackTrace();
        }
    }
 
    public void waitForConnection() throws IOException {
        ms = "Please wait to get connection...\n";
        showMessage(ms);
        //ms.editable(false);
        //showMessage("Please wait to get connection...\n");
        //showMessage.setEditable(false);
        connection = server.accept();
        showMessage("Now you are connected to" + connection.getInetAddress().getHostAddress());
 
 
    }
 
    public void setUpStream() throws IOException {
        output = new ObjectOutputStream(connection.getOutputStream());
        output.flush();
        input = new ObjectInputStream(connection.getInputStream());
        showMessage("\n The streams are now setup");
 
    }
 
    public void whileChatting() throws IOException {
        String message = "Congratulation! You are now connected";
        sendMessage(message);
        ableToType(true);
        do {
            try {
                message = (String) input.readObject();
                //showMessage("\n" + message);
            } catch (ClassNotFoundException classNotfoundException) {
                showMessage("\nThe input is not recognizable, please enter any text");
            }
            //} while (!message.equals("SERVER-END"));
        } while (!message.equals("CLIENT-END"));
 
 
 
 
 
 
    }
 
    private void closeCrap() {
        showMessage("\nClosing crap...\n");
        ableToType(false);
        try {
            output.close();
            input.close();
            connection.close();
        } catch (IOException ioexception) {
            ioexception.printStackTrace();
        }
    }
 
    private void sendMessage(String message) {
        try {
            output.writeObject("SERVER-" + message);
            output.flush();
            showMessage("\nSERVER-" + message);
        } catch (IOException ioexception) {
            chatWindow.append("\nThere may be an error, contact the service provider!");
 
        }
    }
 
    private void showMessage(final String text) {
        SwingUtilities.invokeLater(
                new Runnable() {
            public void run() {
                chatWindow.append(text);
            }
        });
    }
 
    private void ableToType(final boolean tof) {
        SwingUtilities.invokeLater(
                new Runnable() {
            public void run() {
                usertext.setEditable(tof);
            }
        });
    }
}
 
 
[U][B][I]Main class[/I][/B][/U]
 
 
 
/*
* To change this template, choose Tools | Templates
* and open the template in the editor.
*/
package im;
 
import javax.swing.JFrame;
 
/**
*
* @author Jabir Al Fatah
*/
public class IM {
 
/**
* @param args the command line arguments
*/
public static void main(String[] args) {
Server sr = new Server();
sr.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
sr.startRunning();
// TODO code application logic here
}
}
 
 
[COLOR="#008000"]Client program:[/COLOR]
 
/*
* To change this template, choose Tools | Templates
* and open the template in the editor.
*/
package imclient;
 
import java.io.*;
import java.net.*;
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
 
/**
*
* @author Jabir Al Fatah
*/
public class Client extends JFrame {
 
private JTextField usertext;
private JTextArea chatwindow;
private Socket connection;
private ObjectInput input;
private ObjectOutput output;
private String message = "";
private String ServerIP;
 
public Client(String host) {
super("My ICool messanger");
ServerIP = host;
usertext = new JTextField();
usertext.setEditable(false);
usertext.addActionListener(
new ActionListener() {
public void actionPerformed(ActionEvent event) {
sendMessage(event.getActionCommand());
usertext.setText("");
}
});
add(usertext, BorderLayout.NORTH);
chatwindow = new JTextArea();
add(new JScrollPane(chatwindow), BorderLayout.CENTER);
 
setSize(300, 200);
setVisible(true);
 
 
 
}
 
public void startRunning() {
try {
connectToServer();
setupStreams();
whileChatting();
 
 
 
 
 
} catch (EOFException eofException) {
showMessage("\n You aren't connected anymore");
 
} catch (IOException iOException) {
iOException.printStackTrace();
} finally {
closeCrap();
}
}
 
private void connectToServer() throws IOException {
 
showMessage("Attempting connection");
connection = new Socket(InetAddress.getByName(ServerIP), 6789);
showMessage("\n Connected to :" + connection.getInetAddress().getHostName());
}
 
private void setupStreams() throws IOException {
output = new ObjectOutputStream(connection.getOutputStream());
output.flush();
 
input = new ObjectInputStream(connection.getInputStream());
showMessage("\nYour streams are now setup");
}
 
private void whileChatting() throws IOException {
ableToType(true);
do {
try {
message = (String) input.readObject();
showMessage("\n" + message);
 
} catch (ClassNotFoundException classNotFoundException) {
showMessage("I can't read the object");
}
 
 
} while (!message.equals("SERVER-END"));
}
 
private void closeCrap() {
ableToType(false);
showMessage("\nClosing down the messanger");
try {
output.close();
input.close();
connection.close();
 
} catch (IOException iOException) {
//showMessage("\nThere is an error!")
iOException.printStackTrace();
}
 
}
 
private void sendMessage(String message) {
try {
output.writeObject("CLIENT:- " + message);
output.flush();
showMessage("\nCLIENT:- " + message);
} catch (IOException iOException) {
chatwindow.append("\nThe message can't be delevered");
 
}
 
}
 
private void showMessage(final String te) {
SwingUtilities.invokeLater(
new Runnable() {
public void run() {
chatwindow.append(te);
 
 
}
});
 
//private void closeCrap() {
//}
}
 
private void ableToType(final boolean tof) {
SwingUtilities.invokeLater(
new Runnable() {
public void run() {
usertext.setEditable(tof);
}
});
 
 
}
}
 
 
[B][I]Main Class:[/I][/B]
 
 
/*
* To change this template, choose Tools | Templates
* and open the template in the editor.
*/
package imclient;
 
import javax.swing.JFrame;
 
/**
*
* @author Jabir Al Fatah
*/
public class IMClient {
 
/**
* @param args the command line arguments
*/
public static void main(String[] args) {
Client cl;
cl = new Client("127.0.0.1");
//cl = new Client("");
//cl = new Client(" 77.105.222.248");
cl.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
cl.startRunning();
//Client cl = new Client();
//cl.startRunning();
 
 
// TODO code application logic here
}
}