Hotel Reservation Program

import java.io.BufferedReader;
import java.io.FileReader;
import java.util.Scanner;
import java.util.ArrayList;
import java.util.List;
import java.util.Arrays;
import java.util.HashMap;
import java.util.Map;
import java.util.Collection;
import java.util.Collections;
import java.util.Iterator;
 import java.util.Random;

public class HotelProject {

    ArrayList<Guest> guestList = new ArrayList();
    ArrayList<Room> roomList = new ArrayList();
    boolean loggedIn = false;
    Guest g;
    public static void main(String[] args) {
        System.out.println("\n========================== WELCOME TO OUR RESERVATION SYSTEM ============================");
        HotelProject hp = new HotelProject();
        hp.readInGuests();
        System.out.println("                 Our hotel currently has " + hp.guestList.size() + " members");
        hp.readInRooms();
        System.out.println("                 We offer " + hp.roomList.size() + " types of room");
        System.out.println("=========================================================================================");
        hp.processHotelProject();
    }

    public void processHotelProject() {
        while (true) {
            System.out.println("Please Log In To Begin");
            do {
                System.out.println("Username:");
                Scanner scanner = new Scanner(System.in);
                String username = scanner.next();
                System.out.println("Password:");
                String password = scanner.next();
                g = verifyLogin(username, password);
            } while (g == null);
            System.out.println("Successfully Logged in. Thank you.");
            System.out.println("To make sure you are not a robot please re-enter number below");
            Random rand = new Random();
            int randomNum = rand.nextInt((10000 - 1) + 1) + 1;
            System.out.println(randomNum);
            Scanner scanner = new Scanner(System.in);
            String random = scanner.next();
            if (random.equals(randomNum + "")) {
                System.out.println("Thank you " + g.getPrefix() + ". " + g.getLastName() + " Your balance is: $" + g.getBalance());
                System.out.println("HERE ADD ");
                int selection = processSelection();
                if(selection == 1){
                    processBooking();
                } else {
                    System.out.println("Thank you " + g.getPrefix() + ". " + g.getLastName() + " for using our system and Good Bye.");
                    g = null;
                }
            } else {
                System.out.println("You are a robot! Bye Bye.");
                break;
            }
        }

    }

    public void processBooking(){
        System.out.println("Currently we offer rooms for ");
        printAvailableOccupancies();
    }

    public void printAvailableOccupancies(){
        Map<Integer, Integer> map = new HashMap<Integer, Integer>();

        for(int x = 0; x < roomList.size(); x++){
            System.out.println("adding max allowed:" + (roomList.get(x)).getMaxAllowed());
            map.put(new Integer((roomList.get(x)).getMaxAllowed()).intValue(), new Integer((roomList.get(x)).getMaxAllowed()).intValue());
        }
        System.out.println("ended with:" + map.size());
        Collection<Integer> unsorted = map.values();
        System.out.println("as values:" + unsorted.size());
        Object[] intsArr = unsorted.toArray();
        //List<Integer> sorted = Collections.sort(unsorted);
        //Iterator it = unsorted.iterator();
        for(int x = 0; x < intsArr.length; x++){
            System.out.print(((Integer)intsArr[x]).intValue());
            if(x < intsArr.length-2) System.out.print(", ");
            else if( x == intsArr.length-1 )System.out.println(" or ");
        }
    }



    public int processSelection(){
        while ( true ) {
            printOptions();
            Scanner scanner = new Scanner(System.in);
            String selection = scanner.next();
            if (selection.equals("1") || selection.equals("2")) {
                System.out.println("returning " + selection);
                return new Integer(selection).intValue();
            } else {
                System.out.println("We do not recognize this selection please try again");
            }
        }
    }

    public void printOptions(){
        System.out.println("Please choose your selection:");
        System.out.println("Type 1 to book a room");
        System.out.println("Type 2 to exit");
    }

    public void readInGuests() {

        try {

            FileReader fr = new FileReader("./guests.txt");
            BufferedReader br = new BufferedReader(fr);
            String line;
            while ( ( line = br.readLine()) != null) {


                List<String> fields = Arrays.asList(line.split(","));
                Guest g = new Guest();
                g.setFirstName(fields.get(0));
                g.setLastName(fields.get(1));
                g.setUsername(fields.get(2));
                g.setPassword(fields.get(3));
                g.setPrefix(fields.get(4));
                g.setBalance(new Double(fields.get(5)).doubleValue());

                guestList.add(g);
            }
        } catch(Exception e){
            System.out.println("Exception:" + e.toString());
        }
    }

    public void readInRooms() {

        try {

            FileReader fr = new FileReader("./rooms.txt");
            BufferedReader br = new BufferedReader(fr);
            String line;
            while ( ( line = br.readLine()) != null) {


                List<String> fields = Arrays.asList(line.split(","));
                Room r = new Room();
                r.setMaxAllowed(new Integer(fields.get(0)).intValue());
                r.setNumberOfRooms(new Integer(fields.get(1)).intValue());
                r.setViewType(fields.get(2));
                r.setPrice(new Double(fields.get(3)).doubleValue());

                roomList.add(r);
            }
        } catch(Exception e){
            System.out.println("Exception:" + e.toString());
        }
    }

    public Guest verifyLogin(String username, String password) {
        for(int x = 0; x < guestList.size(); x++){
            Guest guest = guestList.get(x);
            if (username.equals(guest.getUsername()) && password.equals(guest.getPassword())) {
                return guest;
            }
        }
        System.out.println("Username/Password incorrect please try again");
        return null;

    }

}