Cinema Room Manager by hyperskill.org

package cinema;

import java.util.Scanner;

class Cinema {

    static int seats;
    static int rows;
    static String[][] cinema = new String[rows][seats];
    static Scanner s = new Scanner(System.in);
    static int menuNumber;
    static int currentIncome;

    public static void main (String[] args) {

        createCinema();
        showMenu();
    }

    public static void createCinema () {
        System.out.println("Enter the number of rows:");
        rows = s.nextInt();
        System.out.println("Enter the number of seats in each row:");
        seats = s.nextInt();
        cinema = new String[rows][seats];

        for (int i = 0; i < rows; i++) {
            for (int j = 0; j < seats; j++) {
                cinema[i][j] = "S";
            }
        }
    }

    public static void showSeats () {
        System.out.print("Cinema:\n" + " ");
        for (int i = 0; i < seats; i++) {
            System.out.print(" " + (i + 1));
        }
        System.out.println();
        for (int i = 0; i < rows; i++) {
            System.out.print((i + 1) + " ");
            for (int j = 0; j < seats; j++) {
                System.out.print(cinema[i][j] + " ");
            }
            System.out.println();
        }
        System.out.println();
    }

    public static void buyTicket () {
        System.out.println("Enter a row number:");
        int rowNumber = s.nextInt();
        System.out.println("Enter a seat number in that row:");
        int seatNumber = s.nextInt();
        System.out.println();

        try {
            if (cinema[rowNumber - 1][seatNumber - 1].equals("B")) {
                System.out.println("That ticket has already been purchased!\n");
                buyTicket();
            } else {
                if (rows * seats > 60) {
                    if (rowNumber > rows / 2) {
                        currentIncome += 8;
                        System.out.println("Ticket price: $" + 8);
                        System.out.println();
                    } else {
                        currentIncome += 10;
                        System.out.println("Ticket price: $" + 10);
                        System.out.println();
                    }
                } else {
                    currentIncome += 10;
                    System.out.println("Ticket price: $" + 10);
                    System.out.println();
                }
                cinema[rowNumber - 1][seatNumber - 1] = "B";
            }
        } catch (ArrayIndexOutOfBoundsException e) {
            System.out.println("Wrong input!\n");
            buyTicket();
        }
    }

    public static void showMenu () {
        System.out.println("1. Show the seats\n" +
                           "2. Buy a ticket\n" +
                           "3. Statistics\n" +
                           "0. Exit");
        menuNumber = s.nextInt();
        while (menuNumber != 0) {
            if (menuNumber == 1) {
                showSeats();
                showMenu();
            } else if (menuNumber == 2) {
                buyTicket();
                showMenu();
            } else if (menuNumber == 3) {
                showStatistics();
                showMenu();
            }
            return;
        }
    }

    public static void showStatistics () {
        int bookedSeats = 0;
        int availableSeats = 0;
        int totalIncome = 0;
        double percentageTickets = 0;

        for (int i = 0; i < rows; i++) {
            for (int j = 0; j < seats; j++) {
                if (cinema[i][j] == "B") {
                    bookedSeats++;
                } else if (cinema[i][j] == "S") {
                    availableSeats++;
                }
            }
        }
        if (rows * seats > 60) {
            int firstHalfRoomPrice = ((rows / 2) * seats) * 10;
            int secondHalfRoomPrice = ((rows - (rows / 2)) * seats) * 8;
            totalIncome = firstHalfRoomPrice + secondHalfRoomPrice;
        } else {
            totalIncome = rows * seats * 10;
        }
        percentageTickets = (bookedSeats / ((double)(rows * seats)) * 100);
        String percentage = String.format("%.2f", percentageTickets);

        System.out.println("Number of purchased tickets: " + bookedSeats);
        System.out.println("Percentage: " + percentage + "%");
        System.out.println("Current income: $" + currentIncome);
        System.out.println("Total income: $" + totalIncome);
        System.out.println();

        showMenu();
    }
}