Implement TCP Server for transferring files using Socket and ServerSocket.

Source Code:

Client side

import java.io.*;

import java.net.*;

class Client_TcpFile

{

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

                  {

                              int fsize=2000;

                              int n;

                              Socket soc=new Socket("localhost",2000);

                              byte[] barray=new byte[fsize];

                              InputStream in=soc.getInputStream();

                              FileOutputStream fout=new FileOutputStream("D:/CP-6/Adv Java/LAB/Lab 1/File_check.docx");

                              BufferedOutputStream bout=new BufferedOutputStream(fout);

                              n=in.read(barray,0,barray.length);

                              do

                              {

                                          n = in.read(barray, 0, barray.length);

                                          if(n >= 0)

                                                      n++;

                              }while(n > -1);

                              bout.write(barray, 0 , barray.length);

                              bout.flush();

                              bout.close();

                              soc.close();

                  }

}

Server side

import java.io.*;

import java.net.*;

public class Server_TcpFile

{

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

      {

                  ServerSocket ssoc = new ServerSocket(2000);

                  Socket soc = ssoc.accept();

                  System.out.println("Connection established: " + soc);

                  File f = new File ("D:/CP-6/Adv Java/LAB/Lab 1/File_check.docx");

                  byte [] barray = new byte [(int)f.length()];

                  FileInputStream fin = new FileInputStream(f);

                  BufferedInputStream bin = new BufferedInputStream(fin);

                  bin.read(barray,0,barray.length);

                  OutputStream out = soc.getOutputStream();

                  System.out.println("Sending Files...");

                  out.write(barray,0,barray.length);

                  out.flush();

                  soc.close();

                  System.out.println("File transfer completed");

      }

}

Output: