import java.util.Scanner;

public class Menus {

    public static void main(String[] args) {

        int value;
        String userName;
        String password;
        boolean a = true;

        Scanner sc = new Scanner(System.in);

        while (a) {

            displayMenu();
            value = sc.nextInt();
            switch (value) {
            case 1:
                System.out.println("Username :");
                userName = sc.next();
                System.out.println("Password :");
                password = sc.next();

                if (userName.equals("admin") && password.equals("admin")) {
                    displaySuperMenu();
                }




                a = false;
                break;
            case 2:
                System.out.println("Exit selected");
                a = false;
                break;
            default:
                System.out.println("Invalid selection! \n" + "==================");

            }

        }

    }

    public static void displayMenu() {
        System.out.println(" Options: ");
        System.out.println(" 1. Login ");
        System.out.println(" 2. Exit  ");
        System.out.println(" Select option: ");
    }

    public static void displaySuperMenu() {
        System.out.println(" Options: ");
        System.out.println(" A. CREATE ");
        System.out.println(" B. VIEW ");
        System.out.println(" C. DELETE ");
        System.out.println(" D. UPDATE \n" + "==================");
        System.out.println(" Select option: ");
    }

    public static void elevatedMenu() {
        System.out.println("");
    }

}