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client server chat is not working from both side
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Java
by this code i can send message only from one side either client or server to other frame text area but not both side
could you please tell me whats the problem


----------------------------Client Code-----------------------------
C#
public class ClientForm extends javax.swing.JFrame {
    Socket server = null;
    DataInputStream dis = null;
    DataOutputStream dos = null;

    public ClientForm() {
        initComponents();
    }

    @SuppressWarnings("unchecked")
    // <editor-fold defaultstate="collapsed" desc="Generated Code">
    private void initComponents() {

        btn_connect = new javax.swing.JButton();
        txt_msg = new javax.swing.JTextField();
        btn_send = new javax.swing.JButton();
        jScrollPane1 = new javax.swing.JScrollPane();
        txt_recMsgClient = new javax.swing.JTextArea();

        setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);
        setTitle("Client");
        setBackground(new java.awt.Color(-65536,true));

        btn_connect.setText("Connect");
        btn_connect.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                btn_connectActionPerformed(evt);
            }
        });

        btn_send.setText("Send");
        btn_send.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                btn_sendActionPerformed(evt);
            }
        });

        txt_recMsgClient.setBackground(new java.awt.Color(-4144960,true));
        txt_recMsgClient.setColumns(20);
        txt_recMsgClient.setFont(new java.awt.Font("Monospaced", 2, 14)); // NOI18N
        txt_recMsgClient.setForeground(new java.awt.Color(-65536,true));
        txt_recMsgClient.setRows(5);
        txt_recMsgClient.setBorder(javax.swing.BorderFactory.createMatteBorder(1, 1, 1, 1, new java.awt.Color(-16711936,true)));
        txt_recMsgClient.setSelectedTextColor(new java.awt.Color(-65536,true));
        jScrollPane1.setViewportView(txt_recMsgClient);

        javax.swing.GroupLayout layout = new javax.swing.GroupLayout(getContentPane());
        getContentPane().setLayout(layout);
        layout.setHorizontalGroup(
            layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(layout.createSequentialGroup()
                .addContainerGap()
                .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                    .addComponent(btn_connect)
                    .addGroup(javax.swing.GroupLayout.Alignment.TRAILING, layout.createSequentialGroup()
                        .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.TRAILING)
                            .addComponent(txt_msg, javax.swing.GroupLayout.DEFAULT_SIZE, 305, Short.MAX_VALUE)
                            .addComponent(jScrollPane1, javax.swing.GroupLayout.DEFAULT_SIZE, 305, Short.MAX_VALUE))
                        .addGap(18, 18, 18)
                        .addComponent(btn_send)))
                .addContainerGap())
        );
        layout.setVerticalGroup(
            layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(layout.createSequentialGroup()
                .addContainerGap()
                .addComponent(btn_connect)
                .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.UNRELATED)
                .addComponent(jScrollPane1, javax.swing.GroupLayout.DEFAULT_SIZE, 203, Short.MAX_VALUE)
                .addGap(18, 18, 18)
                .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                    .addComponent(txt_msg, javax.swing.GroupLayout.PREFERRED_SIZE, 20, javax.swing.GroupLayout.PREFERRED_SIZE)
                    .addComponent(btn_send))
                .addGap(11, 11, 11))
        );

        pack();
    }// </editor-fold>
public void recmsg()
{
    try 
        {
                String msg = dis.readUTF();
                String oldText = txt_recMsgClient.getText();
                StringBuilder yourStringBuilder = new StringBuilder();
                yourStringBuilder.append("\n").append(oldText).append(msg);
                txt_recMsgClient.setText(yourStringBuilder.toString());
            }
        catch (IOException ex)
        {
            Logger.getLogger(ClientForm.class.getName()).log(Level.SEVERE, null, ex);
        }
}
    private void btn_connectActionPerformed(java.awt.event.ActionEvent evt) {                                            
        // TODO add your handling code here:
        try {
                server = new Socket("127.0.0.1",2000);
                JOptionPane.showMessageDialog(null, "Connected To Server");
                dis = new DataInputStream(server.getInputStream());
                dos = new DataOutputStream(server.getOutputStream());
                ReceiveMessage clientThread = new ReceiveMessage(dis, txt_recMsgClient);
                clientThread.setDaemon(true);
                clientThread.setName("Server");
                clientThread.start();
                
            } catch (UnknownHostException ex) {
                Logger.getLogger(ClientForm.class.getName()).log(Level.SEVERE, null, ex);
                JOptionPane.showMessageDialog(null, "Connection Failed");
            } catch (IOException ex) {
                Logger.getLogger(ClientForm.class.getName()).log(Level.SEVERE, null, ex);
                JOptionPane.showMessageDialog(null, "Connect Failed");
            }

    }                                           
/**/
    private void btn_sendActionPerformed(java.awt.event.ActionEvent evt) {                                         
        // TODO add your handling code here:
        String m = txt_msg.getText();
        try
        {
            dos.writeUTF(m);
            
        }
        catch (IOException ex)
        {
            Logger.getLogger(ClientForm.class.getName()).log(Level.SEVERE, null, ex);
        }
        recmsg();
    }                                        

    public static void main(String args[]) {
        java.awt.EventQueue.invokeLater(new Runnable() {

          
            public void run() {
                new ClientForm().setVisible(true);
            }
        });
    }
    // Variables declaration - do not modify
    private javax.swing.JButton btn_connect;
    private javax.swing.JButton btn_send;
    private javax.swing.JScrollPane jScrollPane1;
    private javax.swing.JTextField txt_msg;
    private javax.swing.JTextArea txt_recMsgClient;



--------------------------Server Code---------------------------------
C#
import java.io.DataInputStream;
import java.io.DataOutputStream;
import java.io.IOException;
import java.net.ServerSocket;
import java.net.Socket;
import java.util.logging.Level;
import java.util.logging.Logger;
import javax.swing.JOptionPane;

public class ServerForm extends javax.swing.JFrame {

   ServerSocket server = null;
   Socket client = null;
   DataInputStream dis = null;
   DataOutputStream dos = null;
    public ServerForm() {
        initComponents();
    }

    @SuppressWarnings("unchecked")
    // <editor-fold defaultstate="collapsed" desc="Generated Code">
    private void initComponents() {

        btn_strtServer = new javax.swing.JButton();
        btn_send = new javax.swing.JButton();
        txt_msg = new javax.swing.JTextField();
        jScrollPane1 = new javax.swing.JScrollPane();
        txt_recMsgServer = new javax.swing.JTextArea();

        setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);
        setTitle("Server");
        setBackground(new java.awt.Color(-1,true));

        btn_strtServer.setText("Start");
        btn_strtServer.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                btn_strtServerActionPerformed(evt);
            }
        });

        btn_send.setText("Send");
        btn_send.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                btn_sendActionPerformed(evt);
            }
        });

        txt_recMsgServer.setBackground(new java.awt.Color(-16711681,true));
        txt_recMsgServer.setColumns(20);
        txt_recMsgServer.setForeground(new java.awt.Color(-256,true));
        txt_recMsgServer.setRows(5);
        jScrollPane1.setViewportView(txt_recMsgServer);

        javax.swing.GroupLayout layout = new javax.swing.GroupLayout(getContentPane());
        getContentPane().setLayout(layout);
        layout.setHorizontalGroup(
            layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(javax.swing.GroupLayout.Alignment.TRAILING, layout.createSequentialGroup()
                .addGap(18, 18, 18)
                .addComponent(txt_msg, javax.swing.GroupLayout.DEFAULT_SIZE, 297, Short.MAX_VALUE)
                .addGap(18, 18, 18)
                .addComponent(btn_send)
                .addContainerGap())
            .addGroup(layout.createSequentialGroup()
                .addGap(18, 18, 18)
                .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                    .addGroup(layout.createSequentialGroup()
                        .addComponent(btn_strtServer)
                        .addContainerGap())
                    .addGroup(layout.createSequentialGroup()
                        .addComponent(jScrollPane1, javax.swing.GroupLayout.DEFAULT_SIZE, 297, Short.MAX_VALUE)
                        .addGap(85, 85, 85))))
        );
        layout.setVerticalGroup(
            layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(layout.createSequentialGroup()
                .addContainerGap()
                .addComponent(btn_strtServer)
                .addGap(18, 18, 18)
                .addComponent(jScrollPane1, javax.swing.GroupLayout.PREFERRED_SIZE, 196, javax.swing.GroupLayout.PREFERRED_SIZE)
                .addGap(18, 18, 18)
                .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
                    .addComponent(txt_msg, javax.swing.GroupLayout.PREFERRED_SIZE, 23, javax.swing.GroupLayout.PREFERRED_SIZE)
                    .addComponent(btn_send))
                .addContainerGap())
        );

        pack();
    }// </editor-fold>
public void recmsg()
{
    try 
        {
                String msg = dis.readUTF();
                String oldText = txt_recMsgServer.getText();
                StringBuilder yourStringBuilder = new StringBuilder();
                yourStringBuilder.append("\n").append(oldText).append(msg);     
                txt_recMsgServer.setText(yourStringBuilder.toString());
            }
        catch (IOException ex)
        {
            Logger.getLogger(ClientForm.class.getName()).log(Level.SEVERE, null, ex);
        }
}
    private void btn_strtServerActionPerformed(java.awt.event.ActionEvent evt) {                                               
        // TODO add your handling code here:
        try
{
    server = new ServerSocket (2000);
    client = server.accept();
    JOptionPane.showMessageDialog(null, "Client Request Accepted");
    dos = new DataOutputStream(client.getOutputStream());
    dis = new DataInputStream(client.getInputStream());
    ReceiveMessage serverThread = new ReceiveMessage(dis, txt_recMsgServer);
    serverThread.setDaemon(true);
    serverThread.setName("Client");
    serverThread.start();
}
catch(IOException ex)
{
    JOptionPane.showMessageDialog(null, "Client Not Available");
}
    }                                              

    private void btn_sendActionPerformed(java.awt.event.ActionEvent evt) {                                         
        // TODO add your handling code here:
        String m = txt_msg.getText();
        try
        {
            dos.writeUTF(m);
        }
        catch (IOException ex)
        {
            Logger.getLogger(ServerForm.class.getName()).log(Level.SEVERE, null, ex);
        }
        recmsg();
              
    }                                        

    public static void main(String args[]) {
        java.awt.EventQueue.invokeLater(new Runnable() {

            @Override
            public void run() {
                new ServerForm().setVisible(true);
            }
        });
    }
    // Variables declaration - do not modify
    private javax.swing.JButton btn_send;
    private javax.swing.JButton btn_strtServer;
    private javax.swing.JScrollPane jScrollPane1;
    private javax.swing.JTextField txt_msg;
    private javax.swing.JTextArea txt_recMsgServer;


-----------------------------Receive Message Code----------------------
C#
import java.io.DataInputStream;
import java.io.IOException;
import java.util.logging.Level;
import java.util.logging.Logger;
import javax.swing.JTextArea;

public class ReceiveMessage extends Thread {
    String msg = "";
    DataInputStream dis = null;
    JTextArea txt_area = null;
    
    public ReceiveMessage (DataInputStream d, JTextArea a)
    {
        this.dis= d;
        this.txt_area= a;
    }

    public void run()
    {
        while(true)
        {
            try
            {
                msg=dis.readUTF();
                txt_area.append("\n"+this.getName() + ":" + msg);
            }
            catch(IOException ex)
            {
                Logger.getLogger(ReceiveMessage.class.getName()).log(Level.SEVERE, null, ex);
            }
        }
    }
}
Posted
Updated 11-Jun-14 19:50pm
v2
Add a Solution
Comments
Thanks7872 12-Jun-14 1:59am    
No one will be going through such code block. Debug your code and try to find out whats going on. Only post the snippet you faced issue with.
kami124 12-Jun-14 2:21am    
this is my function to send code to another frame text area but only once i can send not continuosly

public void recmsg()
{
try
{
String msg = dis.readUTF();
String oldText = txt_recMsgClient.getText();
StringBuilder yourStringBuilder = new StringBuilder();
yourStringBuilder.append("\n").append(oldText).append(msg);
txt_recMsgClient.setText(yourStringBuilder.toString());
}
catch (IOException ex)
{
Logger.getLogger(ClientForm.class.getName()).log(Level.SEVERE, null, ex);
}
}
Richard MacCutchan 12-Jun-14 4:11am    
At a guess there is something wrong in the logic of your program, but you need to do some debugging to find out where.

This content, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

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