Chat Client

import javax.swing.JFrame;
import javax.swing.JButton;
import javax.swing.JTextField;
import java.awt.FlowLayout;
import java.awt.BorderLayout;
import javax.swing.JOptionPane;
import java.awt.event.*;
import javax.swing.*;

import java.io.*;
import java.net.*;

public class Client //change main class name
{
    static JFrame chatFrame = new JFrame("ChatNow Client"); // Create a frame
    static JTextArea JTextArea_group = new JTextArea("Here goes the conversation\n", 15, 80);
    static NetworkClientModule networkClientModule;
    static String ip = JOptionPane.showInputDialog("Please enter IP Address");
    static String clientHandle = JOptionPane.showInputDialog("Please choose your handle");

    public static void main(String[] args)
    {

        chatFrame.setSize(900, 400); // Set the frame size
        chatFrame.setLocationRelativeTo(null);
        chatFrame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        chatFrame.setVisible(true); // Display the frame


        FlowLayout layoutManager = new FlowLayout(0,10,5);
        chatFrame.setLayout(layoutManager);


//        JTextArea JTextArea_group = new JTextArea("Here goes the conversation", 15, 80);
        JTextArea_group.setLineWrap(true);
        JTextArea_group.setWrapStyleWord(true);
        JTextArea_group.setEditable(false);

        //chatFrame.add(JTextArea_group);


        /* here add scroll to JTextArea - actually JScrollpane takes JTextArea */
        JScrollPane scrollPane = new JScrollPane(JTextArea_group);
        chatFrame.add(scrollPane);


        JTextField_group JTF = new JTextField_group();

                                   ///////////////**********maybe needs to be back up (global)

    }
 }

class JTextField_group
{
    JTextField TextFieldChatInput = new JTextField(80);

    JTextField_group()
    {
        Client.chatFrame.add(TextFieldChatInput);
        TextFieldChatInput.setText("Does some text show up?");

        TextFieldChatInput.addActionListener(new messageTextInputListener());
    }

    class messageTextInputListener implements ActionListener
    {
        @Override
        public void actionPerformed(ActionEvent e)
        {
            /*
            JOptionPane.showMessageDialog(null, "The text you entered is: " + TextFieldChatInput.getText());
            ChatGUI.JTextArea_group.setText( TextFieldChatInput.getText() );
            */

            String IhaveTextOfChatInput = TextFieldChatInput.getText();
            Client.JTextArea_group.append(Client.clientHandle + ": "  + "\n");
            Client.JTextArea_group.append(IhaveTextOfChatInput + "\n");
            TextFieldChatInput.setText("");

            if (NetworkClientModule.oServer != null)
            {
                NetworkClientModule.oServer.println(Client.clientHandle + ": ");
                NetworkClientModule.oServer.println(IhaveTextOfChatInput);
                NetworkClientModule.oServer.flush();
            }

        }
    }
}

class NetworkClientModule
{
    Socket socket = null;

    static DataInputStream iServer;
    static PrintWriter oServer;

    NetworkClientModule()
    {
        while(socket == null)
                                    {
        try
        {
            waitA();
            socket = new Socket(Client.ip, 8000);

            iServer = new DataInputStream(socket.getInputStream());
            oServer = new PrintWriter(socket.getOutputStream());
            for(int start = 0; start < 1000 ;start++)            //////////////////////////////while(true)
            {
                waitA();

                String textFromServer = iServer.readLine();         ////// maybe need if-statement   // writeUTF     readUTF

                if (textFromServer != null)
                    Client.JTextArea_group.append(textFromServer + "\n");

            }
        }

        catch(IOException ex)
        {
            System.err.println(ex);
        }
                                    }

    }

    void waitA()
    {
        try
        {
            Thread.sleep(300);
        }

        catch(InterruptedException ex)
        {
            Thread.currentThread().interrupt();
        }
    }
}