client

import java.io.BufferedInputStream;
import java.io.BufferedOutputStream;
import java.io.Console;
import java.io.DataInputStream;
import java.io.DataOutputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.net.Socket;
import java.net.SocketException;
import java.util.Scanner;

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

		// Give error if no server ip and port passed as arguments
		if (args.length != 2) {
            System.err.println("Usage: java FileClient <server address> <port number>");
            System.exit(1);
        }

		String serverName = args[0];
		int serverPort = Integer.parseInt(args[1]);

		try {
			System.out.println("Connecting to " + serverName + " on port " + serverPort);
			Socket client = new Socket(serverName, serverPort);
			System.out.println("Just connected to " + client.getRemoteSocketAddress() + "\n");

			Scanner scanner = new Scanner(System.in);
	        System.out.println("Enter a command: ");
	        String command = scanner.nextLine();
	        scanner.close();

			OutputStream outToServer = client.getOutputStream();
			DataOutputStream out = new DataOutputStream(outToServer);
			out.writeUTF(command);

			//out.writeUTF("Hello from " + client.getLocalSocketAddress());
			InputStream inFromServer = client.getInputStream();
			DataInputStream in = new DataInputStream(inFromServer);

			String value;
			while (in.available() > 0 && (value = in.readUTF()) != null) {
				System.out.println(value);
			}
			in.close();
			out.close();
			client.close();
		} catch (SocketException e){
			System.out.println("Error connecting to the server");
		}

		catch (Exception e) {
			e.printStackTrace();
		}
    }

}