Server

package socket;
import java.io.*;
import java.net.*;

public class Server
{
    public static void main(String[] args) throws IOException
    {
        try
        {
            ServerSocket s = new ServerSocket(9999);
            String str;
            System.out.println("Server is listening ....");
            while (true)
            {
                Socket c = s.accept();
                InputStream i = c.getInputStream();
                OutputStream o = c.getOutputStream();
                byte[] line = new byte[100];

                i.read(line);
                str = new String(line);
                System.out.println(str);

                o.write(line);
                c.close();
            }
        }
        catch (Exception err)
        {
            System.err.println(err);
        }
    }
}