Password Generator

import java.util.Scanner;

public class Main {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        int a = Integer.parseInt(scanner.nextLine());
        char b = scanner.nextLine().charAt(0),
                c = scanner.nextLine().charAt(0);

        int d = Integer.parseInt(scanner.nextLine()),
                e = Integer.parseInt(scanner.nextLine()),
                f = Integer.parseInt(scanner.nextLine()),
                counter = Integer.parseInt(scanner.next());

        for (int i = 1; i <= a; i++) {
            for (char j = 'A'; j <= b; j++) {
                for (char k = 'a'; k <= c; k++) {
                    for (int l = 1; l <= d; l++) {
                        for (int m = 1; m <= e; m++) {
                            for (int n = 1; n <= f; n++) {
                                if (--counter == 0) {
                                    System.out.printf("%d%c%c%d%d%d\n", i, j, k, l, m, n);
                                    System.exit(0);
                                }
                            }
                        }
                    }
                }
            }
        }

        System.out.println("No password on this position");
    }
}