Communication with Socket Connection

client.java

package socketprogramming;

/**
 *
 * @author kulekci
 */
import java.io.*;
import java.net.*;
import java.net.InetAddress;


class client
{
    //http://www.calsoftlabs.com/whitepapers/java-networking.html
    public static String [] text = null;
    
    public static void readFile(){
        try{
            FileInputStream fstream = new FileInputStream("file.txt");
            DataInputStream in = new DataInputStream(fstream);
            BufferedReader br = new BufferedReader(new InputStreamReader(in));
            String strLine;
            int i = 0;
            while ((strLine = br.readLine()) != null)   {
                text[i++] = strLine;
            }
            in.close();
        }catch (Exception e){
            System.err.println("Error: " + e.getMessage());
        }
        
    }

    public static void main(String args[])
    {
        Socket sock=null;
        DataInputStream dis=null;
        PrintStream ps=null;
        System.out.println(" Trying to connect");

        try
        {
            InetAddress ip =InetAddress.getByName
            ("192.168.2.5");

            readFile();
            sock= new Socket(ip,Server.PORT);
            ps= new PrintStream(sock.getOutputStream());
            if (text != null){
                for (int i = 0; i<text.length;i++){

                    ps.println(text[i]);

                }
            }
            DataInputStream is = new
            DataInputStream(sock.getInputStream());
            System.out.println(is.readLine());

        }
        catch(SocketException e)
        {
            System.out.println("SocketException " + e);
        }
        catch(IOException e)
        {
            System.out.println("IOException " + e);
        }
        finally
        {
            try
            {
                sock.close();
            }
            catch(IOException ie)
            {
                System.out.println(" Close Error   :" +
                ie.getMessage());
            }
        } 

    } 
}  

server.java

package socketprogramming;
import java.io.*;
import java.net.*;
/**
 *
 * @author kulekci
 */
public class Server{

//port number should be more than 1024
public static final int PORT = 1025;

public static void main( String args[])
{
    ServerSocket sersock = null;
    Socket sock = null;
    System.out.println(" Wait !! ");

    try
    {
        sersock =  new ServerSocket(PORT);

        System.out.println("Server Started  :"+sersock);
        try
        {
            while (true){
                
                sock = sersock.accept();
                System.out.println("Client Connected  :"+ sock);

                DataInputStream ins = new DataInputStream(sock.getInputStream());

                PrintStream ios = new PrintStream(sock.getOutputStream());
                ios.println("data_accepted");
                ios.close();

                sock.close();
            }
            

        }catch(SocketException se){
            System.out.println("Server Socket problem  "+se.getMessage());
        }
        
    }catch(Exception e){
        System.out.println("Couldn't start "
        + e.getMessage()) ;
    }
    System.out.println(" Connection from :  " +  sock.getInetAddress());

 }

}