java

import java.io.*;
import java.util.Scanner;

public class ProfileSystem {

	public static void main(String[] args)throws IOException {
		Scanner input = new Scanner(System.in);
		int counter = 0;
		String fileName = "ProfileInfo.txt";
		FileReader fr = new FileReader(fileName);
		BufferedReader br = new BufferedReader(fr);
		String credentials [][] = new String[10][2];
		for(int k = 0;k < 10 ; k++){
			String Line = br.readLine();
			String split[] = Line.split(",");
			credentials [k][0] = split [0];
			credentials [k][1] = split [1];
		}
		System.out.println("\rSign-up/Log-in");
		String answer = input.nextLine();
		do{
		switch(answer){

		case"Sign-up":
			counter = 0;
			System.out.println("\rPlease input your new username >");
			String name = input.nextLine();
			try {
				FileWriter fw = new FileWriter(fileName, true);
			    fw.write(name);
			    fw.close();
			    }
			   catch(FileNotFoundException ex) {
				    System.out.println("Unable to save account details " + fileName);}
			catch(IOException ex) {
				System.out.println("Error reading " + fileName);}
			System.out.println("\rInput new password >");
			String pw = input.nextLine();
			try {
				FileWriter fw1 = new FileWriter(fileName, true);
			    fw1.write(","+pw);
			    fw1.close();
				}
			    catch(FileNotFoundException ex) {
				    System.out.println("Unable to save account details " + fileName);}
			catch(IOException ex) {
				System.out.println("Error reading " + fileName);}
			System.out.println("What is your favourite genre of film?");
		    String genre = input.nextLine();
		    if(genre.equals("Comedy")){System.out.println("Here are some film recommendations: The Mask, Megamind, The Hangover, Shaun of the Dead and Ted. ");}
		    if(genre.equals("Horror")){System.out.println("Here are some film recommendations:  .");}
		    if(genre.equals("Thriller")){System.out.println("Here are some film recommendations: . ");}
		    if(genre.equals("Drama")){System.out.println("Here are some film recommendations: . ");}
		    if(genre.equals("War")){System.out.println("Here are some film recommendations: Dunkirk, . ");}


		case"Log-in":
			counter = 3;
			boolean loginsuccess = false;
			boolean pwsuccess = false;
			System.out.println("Input your username >");
			String user = input.nextLine();
			System.out.println("Input your password >");
			String pass = input.nextLine();
			for (int i = 0; i < 10;i++){
				if(credentials[i][0].equals(user)){
					loginsuccess = true;
					if(credentials[i][1].equals(pw)){
					loginsuccess = true;}
				input.close();}}}}}}