void connect_clients()
    {
        try {
            ServerSocket listener = new ServerSocket(7700);
            jButton1.setText("Server Running!");
            jButton1.setEnabled(false);
            try {
                while (true) {

                    socket = listener.accept();
                    try {

                            clientIP = socket.getLocalAddress().getHostName();

                    }
                    finally
                            {

                            }
                }
            }

               finally
                            {

                            }

            }
        catch(IOException ex)
        {
        }
    }
  private void jLabel1MouseClicked(java.awt.event.MouseEvent evt) {

    PrintWriter out;
     try {
         out = new PrintWriter(socket.getOutputStream(), true);
         out.println("pc1");
         out = null;
     } catch (IOException ex) {
         Logger.getLogger(third_frame.class.getName()).log(Level.SEVERE, null, ex);
     }


}

private void jLabel2MouseClicked(java.awt.event.MouseEvent evt) {
    PrintWriter out;
     try {
         out = new PrintWriter(socket.getOutputStream(), true);
         out.println("pc2");
     } catch (IOException ex) {
         Logger.getLogger(third_frame.class.getName()).log(Level.SEVERE, null, ex);
     }
}

void connect_server()
    {
        try {
            // TODO code application logic here
            String serverAddress = JOptionPane.showInputDialog(
                    "Enter IP Address of a machine that isn" +
                            "running the date service on port 9090:");
            s = new Socket(serverAddress, 7700);


            BufferedReader input =
            new BufferedReader(new InputStreamReader(s.getInputStream()));
            String answer = input.readLine();

            System.out.println(answer);
            answer = null;

        }
        catch (IOException ex) {
            Logger.getLogger(client_form.class.getName()).log(Level.SEVERE, null, ex);
        }
    }