Cant read the transfered file

Question

i transfer the jpg file but it shows no previwe available
and the transfered file is always 8kb short
//package ksm.mulitiserver;
import java.io.*;
import java.net.*;
import java.sql.*;
public class MultiServer
     private ServerSocket     Server;
     private Socket               Client;
     private int ConnectionCounter;
     private int Port;
     public MultiServer()
          ConnectionCounter=0;
          Port=5000;
          Init();
     public void Init()
          try
               Server=new ServerSocket(4444);
               while(true)
                    WaitingForConnection();
                    CreateThread();
          catch(Exception e)
               System.out.println(e);
     public void CreateThread()
          try
               System.out.println("Total Active Users:\t"+ConnectionCounter);
               ConnectionCounter++;
               new ServerThread(Client,ConnectionCounter);
          catch(Exception e)
               System.out.println(e);
               return;
     public void WaitingForConnection()
          System.out.println("Waiting For Connection "+Server.getInetAddress().getHostName());
          System.out.println("Listening on port: "+Server.getLocalPort());
          try
               do
                    Client=Server.accept();
               while(Client==null);
               System.out.println("Client Found:\t"+Client.getInetAddress().getHostName());
          catch(Exception e)
               System.out.println(e);
     public static void main(String a[])
          new MultiServer();
// client
//package ksm.mulitiserver;
import java.io.*;
import java.net.*;
public class Client
{ String s;
     public int Client(String s1)
     {   s=s1;
          Processing();
          return 0;
     public void Processing()
          try
               Socket client=new Socket("localhost",4444);
               BufferedReader br;
               BufferedWriter bw;
               String strmsg;
               br=new BufferedReader(new InputStreamReader(client.getInputStream()));
               bw=new BufferedWriter(new OutputStreamWriter(client.getOutputStream()));
               System.out.println("Connected to "+client.getInetAddress().getHostName());
               String strinput=null;
               String strrecv=null;
               bw.write(s+"\n");
               bw.flush();
                    strrecv=s.substring(0,1);
               if(s.equals("u"))
               FileInputStream fis=new FileInputStream("e:/mah.jpg");
                               OutputStream out = client.getOutputStream();
                            byte[] buffer = new byte[10];
                            int bytesRead;
                            while ((bytesRead = fis.read(buffer)) > 0) {
                            out.write(buffer, 0, bytesRead);
                            out.flush(); // Very important
                            fis.close(); // Also very important
           else
             { FileOutputStream fos=new FileOutputStream("c:/nextcalltoclient.jpg");
                    InputStream in = client.getInputStream();
                    byte[] buffer = new byte[100];
                    int bytesRead;
                    while ((bytesRead = in.read(buffer)) > 0)
                    fos.write(buffer, 0, bytesRead);
                     fos.flush(); // Very important
                     fos.close(); // Also very important
               bw.close();
               br.close();
               //client.close();
          catch(Exception e)
               System.out.println(e);
     public static void main(String a[])
     {   Client c=new Client();
          int c1=c.Client("u");
             c1=c.Client("d");
// serverthread
//package ksm.mulitiserver;
import java.io.*;
import java.net.*;
import java.sql.*;
import java.lang.*;
public class ServerThread extends Thread
     public Socket Client;
     public int ID;
     public ServerThread()
     public ServerThread(Socket stemp,int id)
          try
               Client=stemp;
               ID=id;
          catch(Exception e)
               System.out.println(e);
          this.start();
     public void run()
          Processing();
          public void Processing()
          try
               BufferedReader br;
               BufferedWriter bw;
               //String strmsg;
               br=new BufferedReader(new InputStreamReader(Client.getInputStream()));
               bw=new BufferedWriter(new OutputStreamWriter(Client.getOutputStream()));
               String strquerytext=new String();
               String strresult=new String();
           strresult=br.readLine();
            if(strresult.equals("u"))
             FileOutputStream fos=new FileOutputStream("g:/firstcalltoclient.jpg");
                    InputStream in = Client.getInputStream();
                    byte[] buffer = new byte[10];
                    int bytesRead;
                    while ((bytesRead = in.read(buffer)) > 0)
                    fos.write(buffer, 0, bytesRead);
                     fos.flush(); // Very important
                     fos.close(); // Also very important
                     System.out.println("file uplaod finish");
            else
              { FileInputStream fis=new FileInputStream("g:/mah.jpg");
                               OutputStream out = Client.getOutputStream();
                            byte[] buffer = new byte[100];
                            int bytesRead;
                            while ((bytesRead = fis.read(buffer)) > 0) {
                            out.write(buffer, 0, bytesRead);
                            out.flush(); // Very important
                            fis.close(); // Also very important
                            System.out.println("file download finish");
               //new code ends here
               br.close();
               bw.close();
               System.out.println("Client:\t"+Client.getInetAddress().getHostName()+" terminated");
               Client.close();
          catch(Exception e)
               System.out.println(e);
                  what is wrong with code???
i also tried varying the buffer size.

Answer 1

1. It appears your client and server code are mixed. They should be entirely seperate.
2. You can't use a text reader on binary input.
3. Don't mix binary and text data without differentiating them.
4. Now you are sending data and only data via the socket. You should be sending a message. That message contains data like a name and binary data.
I would guess the reason you are seeing a difference is because you are wrapping the stream in a text reader. The text reader reads a block, which moves the stream position. When you start reading the stream directly the position is way past where the single line that you think you are reading is.