Implement a file server to transfer a file from server side to client side.

Implement a file server to transfer a file from server side to client side.

Server-side

import java.net.*;

import java.io.*;

public class ftpserv

{

public static void main(String args[]) throws Exception

{

ServerSocketss = null;

Socket s = null;

try

{

ss = new ServerSocket(4000);

System.out.println("Connecting with client");

s = ss.accept();

System.out.println("Connection is successful");

BufferedReader br = new BufferedReader(new InputStreamReader(s.getInputStream()));

String str = br.readLine( );

BufferedReader br2= new BufferedReader(new FileReader(str) );

System.out.println("File found");

// keeping output stream ready to send the contents

PrintWriter pw = new PrintWriter(s.getOutputStream(), true);

String str2;

while((str2 = br2.readLine()) != null) // reading line-by-line from file

{

pw.println(str2); // sending each line to client

}

System.out.println("File send successfully");

}

catch (SocketException e)

{ System.out.println(e);}

catch (FileNotFoundException e)

{

System.out.println("File does not exist");

}

catch (IOException e)

{ System.out.println(e); }

catch (Exception e) { System.out.println(e); }

finally

{

s.close();

ss.close(); // closing network sockets

}}}

Client side

import java.net.*;

import java.io.*;

public class ftpclient

{

public static void main( String args[ ] ) throws Exception

{

Socket s = null;

try

{

s = new Socket( "localhost", 4000);

System.out.print("Enter path of file atserver: ");

BufferedReader br = new BufferedReader(new InputStreamReader(System.in));

String str = br.readLine();

PrintWriter pw = new PrintWriter(s.getOutputStream(), true);

pw.println(str);

BufferedReader br2 = new BufferedReader(new InputStreamReader(s.getInputStream()));

String str2;

System.out.print("Enter new path of file at client: ");

str2= br.readLine();

BufferedWriter bw = new BufferedWriter(new FileWriter(str2));

while((str2 = br2.readLine()) != null) // reading line-by-line

{

bw.write(str2); bw.newLine();

}

bw.close();

System.out.println("File saved");

}

catch (SocketException e)

{ System.out.println(e); }

catch (FileNotFoundException e)

{

System.out.println("File does not exist");

}

catch (IOException e)

{ System.out.println(e); }

catch (Exception e)

{ System.out.println(e); }

finally

{

s.close();

}}}