Не отображаются ники при отправке сообщений в чате чата

import java.net.*;
import java.util.Scanner;
import java.io.*;
import java.awt.*;
import java.awt.event.*;
 
 
 
 
class FieldWindow extends Frame implements ActionListener
{
private static final long serialVersionUID = 1L;
static TextArea chat=new TextArea("",25,65,TextArea.SCROLLBARS_VERTICAL_ONLY);
TextField str=new TextField(58);
Button send=new Button("Send");
Button ext=new Button("Exit");
static String command="";
static String incopy=null;
static String mess=null;
Frame wind1=new Frame("Chat");
static int len,i=0,u=0;
FieldWindow()
{
wind1.setLayout(new FlowLayout());
wind1.add(chat);
wind1.add(str);
wind1.add(send);
ext.addActionListener(this);
send.addActionListener(this);
wind1.add(ext);
wind1.setSize(500,500);
wind1.setLocation(120,60);
wind1.setResizable(false);
wind1.setVisible(true);
}
public void start()
{
if(NetClientThread.Errors!=null)
{
chat.append(NetClientThread.Errors);
NetClientThread.Errors=null;
}
while(true)
{
if((NetClientThread.Message!=null)&&(NetClientThread.Message!=""))
{
incopy=NetClientThread.Message;
NetClientThread.Message=null;
switch(incopy.charAt(0))
{
case '@':
len=incopy.length()-1;
for(i=1;i<=len;i++)
{
command=command+incopy.charAt(i);
}
i=1;
chat.append("В чат вошел пользаватель: "+command+"\n");
incopy=null;
command="";
break;
case '#':
len=incopy.length()-1;
for(i=1;i<=len;i++)
{
command=command+incopy.charAt(i);
}
i=1;
chat.append("Из чата вышел пользаватель: "+command+"\n");
incopy=null;
command="";
break;
default:
chat.append(incopy);
chat.append("\n");
}
}
try 
{
Thread.sleep(10);
} 
catch (InterruptedException e) 
{
e.printStackTrace();
}
}
}
public void actionPerformed(ActionEvent e) 
{
if(e.getSource()==ext)
{
NetClientThread.out.close();
try 
{
NetClientThread.in.close();
} 
catch (IOException e2) 
{
e2.printStackTrace();
}
try 
{
NetClientThread.s.close();
} 
catch (IOException e1) 
{
e1.printStackTrace();
}
System.exit(0);
}
if(e.getSource()==send)
{
mess=str.getText();
NetClientThread.send(mess);
str.setText("");
}
}
}
public class NetClientThread extends Thread 
{
    Scanner scanner1 = new Scanner(System.in);
    String nick1=scanner1.nextLine();
    static String Errors=null;
static String Message=null;
static BufferedReader in = null;
static PrintWriter out;
static Socket s = null;
static String msg =null;
public NetClientThread() 
{
try 
{
s = new Socket("127.0.0.1", 8030);
InputStreamReader isr = new InputStreamReader (s.getInputStream());
in = new BufferedReader(isr);
out=new PrintWriter(s.getOutputStream(), true);
} catch (IOException e) {Errors="Ошибка соединения";}
}
public static void main(String[] args) 
{
NetClientThread nct = new NetClientThread();
nct.start();
FieldWindow newwindow=new FieldWindow();
newwindow.start();
System.out.println("Введите ник");
}
public void run() 
{
send("@" + nick1 );
while (true) 
{
try 
{
Message = in.readLine();
} 
catch (IOException e) {break;}
}
FieldWindow.chat.append("Ошибка соединения с сервером");
}
public static void send(String msg) 
{
out.println(msg);
out.flush();
}
}