AJ Practical 3

Practical : 3

Subject : Advanced JAVA

Aim : Implement TCP Server for transferring files using Socket and ServerSocket

Source Code :

//ser3.java

import java.io.*;

import java.net.*;

class ser3

{

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

            {

                        ServerSocket s1=new ServerSocket(8);

                        System.out.println("Server is started:\nWaiting for client");

                        Socket s=s1.accept();

                        System.out.println("client connected");

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

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

                        String st=in.readLine();

                        FileReader fr=new FileReader(st);

                        BufferedReader br=new BufferedReader(fr);

                        String line=new String();

                        System.out.println("Reading file "+st);

                        System.out.print("sending to client");

                        for(int i=1;i<10;i++)

                        {

                                    System.out.print(".");

                                    Thread.sleep(100);

                        }

                        while((line=br.readLine())!=null)

                        {

                                    p.println(line);

                        }

                        p.flush();

                        s.close();

            }

} 

//cli3.java

import java.io.*;

import java.net.*;

class cli3

{

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

            {

                        Socket s=new Socket("localhost",8);

                        DataOutputStream dos=new DataOutputStream(s.getOutputStream());

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

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

                        System.out.println("Enter file name:");

                        String s1=ink.readLine();

                        dos.writeBytes(s1+"\n");

                        String sr;

                        while((sr=in.readLine())!=null)

                        {

                                    System.out.println(sr);

                        }

                        s.close();

            }

}

Output :