SimpleChatClient after changes for a7hu

package chatClient;
import java.awt.*;
import javax.swing.*;
import java.net.*;
import java.io.*;
import java.awt.event.*;

public class SimpleChatClient {
    JTextArea incoming;
    JTextField outgoing;
    Socket sock;
    PrintWriter writer;
    JButton button;
    BufferedReader readMe = setUpNetworking();

    public static void main(String[] args) {
        SimpleChatClient instance = new SimpleChatClient();
        instance.go();
    }// ends the static main method

    public void go() {
        JFrame frame = new JFrame("SimpleChatClient");
        JPanel panel = new JPanel();
        incoming = new JTextArea(15,20);
        incoming.setLineWrap(true);
        incoming.setWrapStyleWord(true);
        incoming.setEditable(false);
        // now lets add a scroller to the incoming section
        JScrollPane incomingScroller = new JScrollPane(incoming);
        incomingScroller.setVerticalScrollBarPolicy(ScrollPaneConstants.VERTICAL_SCROLLBAR_ALWAYS);
        incomingScroller.setHorizontalScrollBarPolicy(ScrollPaneConstants.HORIZONTAL_SCROLLBAR_NEVER);

        outgoing = new JTextField(20); // this is where you type your messge
        button = new JButton("Send!!!");
        button.addActionListener(new sendButtonListener());
        panel.add(incomingScroller);
        panel.add(outgoing);
        panel.add(button);// we will define this function later on

        Thread readerThread = new Thread (new IncomingReader()); //creates a thread to read the incoming messages continously
        readerThread.start();

        // now lets add everythign to the frame
        frame.getContentPane().add(BorderLayout.CENTER, panel);
        frame.setSize(500,400);
        frame.setVisible(true);
        frame.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
    }// ends the public void go, gui building finished
    // setup networking
    public BufferedReader setUpNetworking() {
        try {
            sock = new Socket ("127.0.0.1", 4889);
            writer = new PrintWriter(sock.getOutputStream());
            InputStreamReader streamReader = new InputStreamReader(sock.getInputStream());
            BufferedReader reader = new BufferedReader(streamReader);
            System.out.println("Networking Establishe successfully");

            return reader;
        } catch (IOException ex) {
            ex.printStackTrace();
            return new BufferedReader(null);
        }
    } // ends the setUpNetworking
    public class sendButtonListener implements ActionListener {
        public void actionPerformed(ActionEvent ev) {
            try {
                writer.println(outgoing.getText());
                writer.flush();
            } catch (Exception ex) {
                ex.printStackTrace();
            }
            outgoing.setText("");
            outgoing.requestFocus();
        }
    } // ends the sendButtonListener

    public class IncomingReader implements Runnable{
        public void run() {
            String message ;
            try {
                while ((message = SimpleChatClient.this.readMe.readLine())!= null) {
                    System.out.println("read " + message);
                    incoming.append(message + "\n");
                } // ends the while loop
            } catch (IOException ex) {
                ex.printStackTrace();
            }
        }
    } // ends  the incoming reader class
} // ends the public class SimpleChatClient