05. Month Printer(old and new switch patterns, ternary operator and array solutions)

import java.util.Scanner;

class MonthPrinter {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        int number = Integer.parseInt(scanner.nextLine());

        String result = "";

        switch (number) {
            case 1:
                result = "January";
                break;
            case 2:
                result = "February";
                break;
            case 3:
                result = "March";
                break;
            case 4:
                result = "April";
                break;
            case 5:
                result = "May";
                break;
            case 6:
                result = "June";
                break;
            case 7:
                result = "July";
                break;
            case 8:
                result = "August";
                break;
            case 9:
                result = "September";
                break;
            case 10:
                result = "October";
                break;
            case 11:
                result = "November";
                break;
            case 12:
                result = "December";
                break;
            default:
                result = "Error!";
                break;
        }

        System.out.println(result);
    }
}

Solution with new switch pattern(Java 21):

import java.util.Scanner;

class MonthPrinter {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        int number = Integer.parseInt(scanner.nextLine());

        String result = switch (number) {
            case 1 -> "January";
            case 2 -> "February";
            case 3 -> "March";
            case 4 -> "April";
            case 5 -> "May";
            case 6 -> "June";
            case 7 -> "July";
            case 8 -> "August";
            case 9 -> "September";
            case 10 -> "October";
            case 11 -> "November";
            case 12 -> "December";
            default -> "Error!";
        };

        System.out.println(result);
    }
}

Solution with ternary operator:

import java.util.Scanner;

class MonthPrinter {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        int number = Integer.parseInt(scanner.nextLine());

        String result  =
            number == 1 ? "January" :
            number == 2 ? "February" :
            number == 3 ? "March" :
            number == 4 ? "April" :
            number == 5 ? "May" :
            number == 6 ? "June" :
            number == 7 ? "July" :
            number == 8 ? "August" :
            number == 9 ? "September" :
            number == 10 ? "October" :
            number == 11 ? "November" :
            number == 12 ? "December" : "Error!";

        System.out.println(result);
    }
}

Solution with array and ternary operator:

import java.util.Scanner;

class MonthPrinter {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        int number = Integer.parseInt(scanner.nextLine());

        String months[] = {
            "Error!",
            "January",
            "February",
            "March",
            "April",
            "May",
            "June",
            "July",
            "August",
            "September",
            "October",
            "November",
            "December"
        };

        String result = number > 0 && number < 13 ? months[number] : months[0];
        System.out.println(result);
    }
}