-Java Blackberry application to send byte stream to some server via socket

import java.net.*;
import java.io.IOException;
import java.io.*;
import java.util.Scanner;

public class Main {
    private static ServerSocket serverSocketin;
     private static ServerSocket serverSocketout;

    public static void main(String[] args) {
        try {
            serverSocketin = new ServerSocket(8206);
            serverSocketout = new ServerSocket(8207);
            DataSender dtsender = new DataSender();
            DataRiciver dataRiciver=new DataRiciver();
            dtsender.start();
            dataRiciver.start();
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
    static class DataRiciver extends Thread{
        public void run(){
            while (true){
                try {
                    Socket incoming = serverSocketin.accept();
                    DataInputStream in = new DataInputStream(incoming.getInputStream());
                    String data="";
                    data = in.readLine();
                    System.out.println(data);
                    in.close();
                    incoming.close();
                     Thread.sleep(1000);
                } catch (Exception e) {
                                 }
        }

        }
    }

    static class DataSender extends Thread {
        public DataSender() {

        }

        public void run() {
            while (true) {
                try {
                    Scanner reader = new Scanner(System.in);
                    String data = reader.nextLine();
                    Socket outgoing = serverSocketout.accept();
                    PrintStream out = new PrintStream(outgoing.getOutputStream());
                    data=data+ "\n";
                    out.write(data.getBytes());
                    out.flush();
                    out.close();
                    outgoing.close();
                    Thread.sleep(1000);
                }
                catch (Exception ioe)
                {
                }
            }
        }
    }

}