Multithread with tcp

Question

Socket conn = serverSocket.accept();
// Process in another thread
ServerThread srvT= new ServerThread(args ,conn, i);
srvT.start();
my problem is when the thread started conn become null
i checked the program and the class varient become null only when the thread run
is anyone knows what is my problem

Answer 1

tanks for your help
(clientSocket is m_conn)
this is the constructor code and the first lines of the run() function u can see
that i did nothing else
and in the first line of the run() function clientSocket become null
how can i solve this problemm
tanks
public class ServerThread extends Thread
public String sPicturesPath;
public String sPresPath;
public String sLink;
public String sLinkMainPath;
public char slash;
public int iPort;
public int number;
public Socket clientSocket;
public ServerThread(String args[], Socket sck, int i)
super(Integer.toString(i));
sPicturesPath= new String(args[0]);
sPresPath= new String(args[1]);
sLink= new String(args[2]);
sLinkMainPath= new String(args[3]);
slash= args[4].charAt(0);
iPort= Integer.parseInt(args[5]);
clientSocket= sck;
number= i;
public void run()
PrintWriter out; //
BufferedReader in;
String sSlash= new String();
Socket clientSocket= null;
String sInputPacket= new String();
PacketServer packetServer= new PacketServer();
sSlash+= slash;
System.out.println("thread client no "+number);
System.out.println(slash+" "+sLink+" "+sPresPath);
try
System.out.println("setting the io client no "+number);
if (clientSocket==null)
System.out.println("sffgfgfgf");
else
System.out.println("11111111111111111111111111");