8B-Server-Client-Socket

//Server.java

import java.net.*;
import java.io.*;
import java.util.Scanner;
public class Server {
	public static void main(String args[])
	{
		ServerSocket server = null;
		try
		{
			//System.out.println("Enter the port number: ");
			//int port;
			//Scanner sc = new Scanner(System.in);
			//port = sc.nextInt();
			server = new ServerSocket(Integer.parseInt(args[0]));
		}
		catch(Exception e)
		{
			System.out.println(e);
		}
		
		while(true)
		{
			Socket client = null;
			DataInputStream input = null;
			PrintStream output = null;
			try
			{
				client = server.accept();
				input = new DataInputStream(client.getInputStream());
				output = new PrintStream(client.getOutputStream());
				
			}
			catch(Exception e) 
			{
				System.out.println(e);
			}
			output.println("Enter file name :");
			try
			{
				String filename = input.readLine();
				System.out.println("Client has requested file: " + filename);
				
				try
				{
					File f = new File(filename);
					BufferedReader bf = new BufferedReader(new FileReader(f));
					
					String data;
					
					while((data = bf.readLine()) != null)
					{
						output.println(data);
					}
				}
				catch(FileNotFoundException e)
				{
					System.out.println(e);
				}
				client.close();
			}
			catch(Exception e)
			{
				System.out.println(e);
			}
		}
	}

}


//Client.java

import java.net.*;
import java.io.*;
import java.util.Scanner;
public class Client {
	public static void main(String args[])
	{
		Socket client = null;
		BufferedReader bf = null;
		Scanner sc = new Scanner(System.in);
		try
		{
		//	String ip = sc.nextLine();
		//	int port = sc.nextInt();
			client = new Socket(args[0],Integer.parseInt(args[1]));
		}
		catch(Exception e)
		{
			System.out.println(e);
		}
		DataInputStream input = null;
		PrintStream output = null;
		try
		{
			input = new DataInputStream(client.getInputStream());
			output = new PrintStream(client.getOutputStream());
			bf = new BufferedReader(new InputStreamReader(System.in));
			String str = input.readLine();
			System.out.println(str);
			String filename = bf.readLine();
			if(filename != null)
			{
				output.println(filename);
			}
			String data;
			while((data = input.readLine()) != null)
			{
				System.out.println(data);
			}
			client.close();
		}
		catch(Exception e)
		{
			System.out.println(e);
		}
		
		
	}
}