Thread: Java Socket:How i can set value jtext Field when Client Send Message

import java.io.DataInputStream;
import java.io.DataOutputStream;
import java.io.IOException;
import java.net.ServerSocket;
import java.net.Socket;
public class M_serverApp extends javax.swing.JFrame implements Runnable {
 
 
    ServerSocket server = null;
    Socket client       = null;
    DataInputStream dis = null;
    DataOutputStream dos = null;
    String m = null;
 
 
    /**
     * Creates new form M_serverApp
     */
    public M_serverApp() {
        initComponents();
 
 
    }
public void run()
{
 
    ClientHandler handler = new ClientHandler();
    handler.start(); 
 
}    
 
 
class ClientHandler extends Thread{
        public ClientHandler(){
 
 
 
            /******************/
    try {
    server = new ServerSocket(1254);
    System.out.println("start"); 
    }catch(IOException e ){
        System.out.println(e.getMessage());
        System.out.println(e.getStackTrace());
    }
    while (true){
    try{
        client = server.accept();
       // System.out.println("2"); 
 
            dos = new DataOutputStream(client.getOutputStream());
            dis = new DataInputStream(client.getInputStream());
 
 
 
             m = dis.readUTF();
 
               System.out.println(m + "***"+client.getInetAddress());
 
 
               txt2.setEditable(false);
         txt2.setText(m.toString());/***********Here jTextField I Want To Chage*********/
 
 
 
    }catch(IOException e ){
         System.out.print("Error code");
    }
    }
 
            /********************/      
        }
}

pseudo code:

// get the message from the client
String message = client.getMessage();

// set the text field to display the message
textField.setText( message );