ITECH5403 – Comparative Programming Languages School of Science, Engineering and Information Technology CRICOS Provider No. 00103D Page 1 of 10 ITECH5403 - Assignment 2 – Parallel Implementations Due...

44509/Java/src/HotelRoomBookings.java
44509/Java/src/HotelRoomBookings.java
import java.util.Scanner;
public class HotelRoomBookings{
    public static String[] guest_dtl = new String[1000];
    public static Integer[][] room_dtl = new Integer[1000][2];
    public static Integer[][] booking_dtl = new Integer[1000][5];
    public static void main(String[] args){
       menu();
    }
public static void menu(){
String a = "----------------------------------------"
                + "----------------------------------------";
        String b = "---------------------";
        System.out.println(a);
        System.out.println(b + "   Welcome to FedUni Hotel Bookings   " + b);
        System.out.println(a);
        System.out.println("Main Menu - Please Select an Option :");
        System.out.println("   1.) Add Guest");
        System.out.println("   2.) Add Room");
        System.out.println("   3.) Add Bookings");
        System.out.println("   4.) View Bookings");
        System.out.println("   5.) Quit");
        setinitialdata();
        start();
}
    private static void setinitialdata() {
        // Initialized array for testing
        guest_dtl[0] = "NULL";
        guest_dtl[1] = "Amy";
        guest_dtl[2] = "Lily";
        guest_dtl[3] = "Zoe";
        room_dtl[0][0] = 92;
        room_dtl[0][1] = 2;
        room_dtl[1][0] = 99;
        room_dtl[1][1] = 3;
        room_dtl[2][0] = 102;
        room_dtl[2][1] = 4;
        room_dtl[3][0] = 198;
        room_dtl[3][1] = 1;
        room_dtl[4][0] = 200;
        room_dtl[4][1] = 5;
        booking_dtl[0][0] = 1;
        booking_dtl[0][1] = 92;
        booking_dtl[0][2] = 2;

        booking_dtl[0][3] = 260;
        booking_dtl[0][4] = 262;
        booking_dtl[1][0] = 1;
        booking_dtl[1][1] = 99;
        booking_dtl[1][2] = 1;
        booking_dtl[1][3] = 250;
        booking_dtl[1][4] = 252;
        booking_dtl[2][0] = 2;
        booking_dtl[2][1] = 102;
        booking_dtl[2][2] = 3;
        booking_dtl[2][3] = 280;
        booking_dtl[2][4] = 284;
        booking_dtl[3][0] = 3;
        booking_dtl[3][1] = 198;
        booking_dtl[3][2] = 5;
        booking_dtl[3][3] = 148;
        booking_dtl[3][4] = 152;
        booking_dtl[4][0] = 3;
        booking_dtl[4][1] = 200;
        booking_dtl[4][2] = 2;
        booking_dtl[4][3] = 296;
        booking_dtl[4][4] = 298;
    }
    public static void start() {
        System.out.println("Please Enter an Option : ");
        Scanner option = new Scanner(System.in);
        try {
            int input = option.nextInt();
            if (input == 1) {
                System.out.println();
                add_guest();
            }
            if (input == 2) {
                System.out.println();
                add_room();
            }
            if (input == 3) {
                System.out.println();
                find_guest();
            }
            if (input == 4) {
                System.out.println();
                views();
            }
            if (input == 5) {
                System.out.println();
                quit_prog();
            } else {
                System.out.println("\nPlease Select the Correct Option...");
                start();
            }
        } catch (Exception e) {
            System.out.println("Please Select the Correct Option...");
            start();
        }
    }
    public static void add_guest() {
        System.out.println("Please Enter Guest Name below -");
        System.out.println("Guest Name: ");
        Scanner name = new Scanner(System.in);
        String guest_name = name.nextLine();
        if(guest_name.equals("")){
            System.out.println("Please Enter Valid Guest Name.\n");
            add_guest();
        }
        else {
            int i = 0;
            for (int i1 = 0; i1 < guest_dtl.length; i1++) {
                String s = guest_dtl[i1];
                if (s != null) {
                    i++;
                }
            }
            System.out.println("Guest " + guest_name.toUpperCase() + " has been created with Guest ID: " + i);
            guest_dtl[i] = guest_name.toUpperCase();
        }
        while (true){
            System.out.println("\nWould You like to [A]dd a new Guest or [R]eturn to the previous Menu ?");
            Scanner q1 = new Scanner(System.in);
            String a1 = q1.nextLine();
            if ((a1.toUpperCase()).equals("A")){
                System.out.println();
                add_guest();
            }
            else if ((a1.toUpperCase()).equals("R")){
                System.out.println();
                System.out.flush();
                menu();
            }
            else{
                System.out.println("Invalid Input...");
                continue;
            }
        }
    }
    public static void add_room() {
        System.out.println("Please Enter Room Number -");
        Scanner i_room_number = new Scanner(System.in);
        try {
            int room_number = i_room_number.nextInt();
            System.out.println("Please Enter Room Capacity -");
            Scanner i_room_capacity = new Scanner(System.in);
            try {
                int room_capacity = i_room_capacity.nextInt();
                if ((room_number == 0) || (room_capacity == 0)) {
                    System.out.println("Please Enter Valid Room Number and Room Capacity.\n");
                    add_room();
                } else {
                    for (int r = 0; r < room_dtl.length; r++) {
                        Integer s = room_dtl[r][0];
                        if (s != null) {
                            int rn = room_dtl[r][0];
                            if (room_number == rn) {
                                System.out.println("\nRoom Already Exists.");
                                add_room();
                            }
                        }
                    }
                    int i = 0;
                    for (int i1 = 0; i1 < room_dtl.length; i1++) {
                        Integer s = room_dtl[i1][0];
                        if (s != null) {
                            i++;
                        }
                    }
                    room_dtl[i][0] = room_number;
                    room_dtl[i][1] = room_capacity;
                }
            } catch (Exception e) {
                System.out.println("Please Enter Valid Room capacity.");
                add_room();
            }
        } catch (Exception e) {
            System.out.println("Please enter Valid Room Number.");
            add_room(); }
        while (true) {
            System.out.println("\nWould you like to [A]dd a New Room OR [R]eturn to the Main Menu ?");
            Scanner q2 = new Scanner(System.in);
            String aq2 = q2.nextLine();
            if (aq2.toUpperCase().equals("A")) {
                System.out.println("");
                add_room();
            }
            else if (aq2.toUpperCase().equals("R")) {
                System.out.println();
                System.out.flush();
                menu();
            }
            else {
                System.out.println("Invalid Input...");
                continue;
            }
        }
    }
    public static int month, day;
    public static int datetodaynumber(int month, int day) {
        int result = 0;
        //Catch Invalid New Scanner
        if (month < 1 || month > 12 || day < 1 || day > 31) {
            result = 0;
        } else if (month == 1) {
            result = day;
        } else if (month == 2) {
            result = day + 31;
        } else if (month == 3) {
            result = day + 59;
        } else if (month == 4) {
            result = day + 90;
        } else if (month == 5) {
            result = day + 120;
        } else if (month == 6) {
            result = day + 151;
        } else if (month == 7) {
            result = day + 181;
        } else if (month == 8) {
            result = day + 212;
        } else if (month == 9) {
            result = day + 243;
        } else if (month == 10) {
            result = day + 273;
        } else if (month == 11) {
            result = day + 304;
        } else if (month == 12) {
            result = day + 334;
        }
        return result;
    }
    public static int daynumber;
    public static int daynumbertomonth(int daynumber){
        /* Catch Invalid New Scanner */
        if (daynumber< 1 || daynumber >365){
            return  0;
        }
        if (daynumber <= 31) {
            return  1;
        }
        if (daynumber <= 59) {
            return  2;
        }
        if (daynumber <= 90) {
            return  3;
        }
        if (daynumber <= 120) {
            return  4;
        }
        if (daynumber <= 151) {
            return  5;
        }
        if (daynumber <= 181) {
            return 6;
        }
        if (daynumber <= 212) {
            return  7;
        }
        if (daynumber <= 243) {
            return  8;
        }
        if (daynumber <= 273) {
            return  9;
        }
        if (daynumber <= 304) {
            return  10;
        }
        if (daynumber <= 334) {
            return  11;
        }
        if (daynumber <= 365) {
            return 12;
        }
        else {
            return 0;
        }
    }
    public static int daynumbertodayofmonth(int daynumber){
        /* Catch Invalid New Scanner */
        if (daynumber < 1 || daynumber > 365){
            return  0;
        }
        if (daynumber <= 31 ){
            return daynumber;
        }
        if (daynumber <= 59) {
            return daynumber - 31;
        }
        if (daynumber <= 90) {
            return daynumber - 59;
        }
        if (daynumber <= 120) {
            return daynumber - 90;
        }
        if (daynumber <= 151) {
            return daynumber - 120;
        }
        if (daynumber <= 181) {
            return daynumber - 151;
        }
        if (daynumber <= 212) {
            return daynumber - 181;
        }
        if (daynumber <= 243) {
            return daynumber - 212;
        }
        if (daynumber <= 273) {
            return daynumber - 243;
        }
        if (daynumber <= 304) {
            return daynumber - 273;
        }
        if (daynumber <= 334) {
            return daynumber - 304;
        }
        if (daynumber <= 365) {
            return daynumber - 334;
        }
        else {
            return 0;
        }
    }
    public static int guest_id;
    public static void find_guest() {
        System.out.println("Please Enter Guest ID: ");
        Scanner sguest_id = new Scanner(System.in);
        try {
            guest_id = sguest_id.nextInt();
            for (int g = 0; g < guest_dtl.length; g++) {
                if (guest_dtl[guest_id] != null) {
                    find_room();
                }
            }
            System.out.println("Guest Does Not Exists.\n");
            find_guest();
        } catch (Exception e) {
            System.out.println("Please Enter Valid Guest ID.");
            find_guest();
        }
    }
    public static int no_of_room, no_of_guest;
    public static void find_room() {
        System.out.println("Please Enter Room Number : ");
        Scanner sno_of_room = new Scanner(System.in);
        try {
            no_of_room = sno_of_room.nextInt();
            for (int i = 0; i < room_dtl.length; i++) {
                Integer s = room_dtl[i][0];
                if (s != null) {
                    if (no_of_room == room_dtl[i][0]) {
                        System.out.println("Please Enter Number of Guests :");
                        Scanner sno_of_guest = new Scanner(System.in);
                        try {
                            no_of_guest = sno_of_guest.nextInt();
                            int cap = room_dtl[i][1];
                            if ((no_of_guest > 0) && (no_of_guest <= cap)) {
                                month_in();
                            } else {
                                System.out.println("Guest(s) count exceeds room capacity of: " + cap + "\n");
                                find_room();
                            }
                        } catch (Exception e) {
                            System.out.println("Please Enter Valid Number of Guest(s).");
                            find_room();
                        }
                    }
                }
            }
            System.out.println("Room Does Not Exists.\n");
            find_room();
        } catch (Exception e) {
            System.out.println("Please Enter Valid room number.");
            find_room();
        }
    }
    public static int check_in_month, check_in_day, check_out_month, check_out_day, check_in_dn, check_out_dn;
    public static void month_in(){
        System.out.println("Please Enter Check-in Month: ");
        Scanner scheck_in_month = new Scanner(System.in);
        try {
            check_in_month = scheck_in_month.nextInt();
            if (check_in_month < 1 || check_in_month > 12) {
                System.out.println("Invalid Month.");
                month_in();
            } else {
                day_in();
            }
        } catch (Exception e) {
            System.out.println("Please Enter Valid Check-in Month.");
            month_in();
        }
    }
    public static void day_in() {
        System.out.println("Please Enter Check-in Day: ");
        Scanner scheck_in_day = new Scanner(System.in);
        try {
            check_in_day = scheck_in_day.nextInt();
            if (check_in_day < 1 || check_in_day > 31) {
                System.out.println("Invalid Day.");
                day_in();
            } else {
                check_in_dn = datetodaynumber(check_in_month, check_in_day);
                month_out();
            }
        } catch (Exception e) {
            System.out.println("Please Enter Valid Check-in day.");
            day_in();
        }
    }
    public static void month_out() {
        System.out.println("Please Enter Check-out Month: ");
        Scanner scheck_out_month = new Scanner(System.in);
        try {
            check_out_month = scheck_out_month.nextInt();
            if (check_out_month < 1 || check_out_month > 12) {
                System.out.println("Invalid Month.");
                month_out();
            } else {
                dayout();
            }
        } catch (Exception f) {
            System.out.println("Please Enter Valid Check-out Month.");
            month_out();
        }
    }
    public static void dayout() {
        System.out.println("Please Enter Check-out Day: ");
        Scanner scheck_out_day = new Scanner(System.in);
        try {
            check_out_day = scheck_out_day.nextInt();
            if (check_out_day < 1 || check_out_day > 31) {
                System.out.println("Invalid Day.");
                dayout();
            } else {
                check_out_dn = datetodaynumber(check_out_month, check_out_day);
                check_dates();
            }
        } catch (Exception nonintegererror) {
            System.out.println("Please Enter Valid Check-out Day.");
            dayout();
        }
    }
    public static void check_dates(){
        for (int i=0; i            Integer s = booking_dtl[i][0];
            if (s != null) {
                int rnb = booking_dtl[i][1];
                int ind = booking_dtl[i][3];
                int outd = booking_dtl[i][4];
                if (no_of_room == rnb) {
                    if ((check_in_dn > ind && check_in_dn <= outd) || (check_out_dn > ind && check_out_dn <= outd)) {
                        System.out.println("\nRoom is Not Available during that period.");
                        change_room();
                    }
                    continue;
                }
            }
        }
        set_book();
    }
    public static void change_room() {
        System.out.println("Please Enter New Room number: ");
        Scanner qno_of_room = new Scanner(System.in);
        try {
            no_of_room = qno_of_room.nextInt();
            for (int i = 0; i < room_dtl.length; i++) {
                Integer s = room_dtl[i][0];
                if (s != null) {
                    if (no_of_room == room_dtl[i][0]) {
                        int cap = room_dtl[i][1];
                        if (no_of_guest > 0 && no_of_guest <= cap) {
                            check_dates();
                        ...