ServerSocket not oppening

[Mash-Hud Iqbal]

Hello Everyone
I am a new user working on java based TINI device. I am using a application where I am using java.net. the full source code is:
import java.io.*;
import java.net.*;
class DataLogger extends Thread
{
//...
ServerSocket ss=null;
static final int SERVER_PORT = 5713;
HumidityLogger logger;
DataLogger(int samples, int delay) throws LoggingException
{
// Create and start the logging daemon
logger = new HumidityLogger(samples, delay);
logger.start();

public static void main(String[] args)
{


System.out.println("Starting DataLogger ...");
if (args.length != 2)
{
System.out.println("Usage: java DataLogger samples delay");
System.exit(1);
}
int samples = Integer.parseInt(args[0]);
int delay = Integer.parseInt(args[1]);
try
{
(new DataLogger(samples, delay)).start();
}
catch (Exception e)
{
System.out.println("Error creating data logger");
e.printStackTrace();
// In case any non-daemon threads have been started
// System.exit(1);
}
}
public void run()
{
//int SERVER_PORT=5588;

ServerSocket ss=null;
try
{
ss = new ServerSocket(SERVER_PORT);
}
catch (Exception e)
{
System.out.println("Here is the problem");
e.printStackTrace();
System.exit(1);

// Abort if we can�t create ServerSocket instance
return;

}
Socket s = null;
while (true)
{

try
{
// Wait for client connections over PPP or Ethernet
s = ss.accept();
} catch (IOException ioe)
{
// Shut down the logging daemon
//logger.stopLogging();
System.out.println("Fatal problem with server socket");
ioe.printStackTrace();
// Fall out of run method
break;
}
// Create a new thread to handle this connection
(new LogWorker(s)).start();
}


}



private class LogWorker extends Thread
{
private Socket s;
private LogWorker(Socket s)
{
this.s = s;
}
public void run()
{
DataOutputStream dout = null;
try
{
dout = new DataOutputStream(new BufferedOutputStream(s.getOutputStream()));
logger.writeLog(dout);
dout.flush();
} catch (IOException ioe)
{
System.out.println("I/O error writing log data");
ioe.printStackTrace();
} finally
{
try
{
s.close();
dout.close();
} catch (IOException e) {}
}
}
}
}
the problem is when I run it in the ServerSocket instance "ss" is not opening. it is giving me the following error:
TINI /> java DataLogger.tini 60 120 &
Starting DataLogger ...
TINI /> Here is the problem
java.io.IOException: Unable to listen on ServerSocket
No other stack trace info available.

So from the error it is shown the the server socket is not listing. I have done so much research on this and seem like it is like this. Please help me out what to do
regards
Mash-Hud