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Check if array elements are filled in java

I am working on a simple reservation system with 10 elements (places). I want to check if the elements are installed from 1 to 5. If "Yes", then install the elements from 6 to 10 ("Vice-Versa").

An element is not assigned a value more than once. My code is still.

    boolean[] seats = new boolean[10];

    Scanner input = new Scanner(System.in);
    System.out.print("Choose FirstClass(1) / Economy(2): ");
    int flightClass = input.nextInt();

    for (int j = 0; j < seats.length; j++) {
        System.out.println("\nEnter Seat Number: ");
        int enterSeat = input.nextInt();
        if (flightClass == 1) {
            if (enterSeat >= 0 && enterSeat <= 5) {
                System.out.println("You're in the First Class.");

                seats[enterSeat] = true;
                System.out.printf("You're Seat Number is %d\n", enterSeat);

            }

        } else if (flightClass == 2) {
            if (enterSeat >= 6 && enterSeat <= 10) {
                System.out.println("You're in the Economy.");

                seats[enterSeat] = true;
                System.out.printf("You're Seat Number is %d\n", enterSeat);
            }

        }

My question is: how to check if elements from 1 to 5 are installed, and if they are, install elements from 6 to 10 and vice versa?

For instance:

Enter a seat number. book: 1

Enter a seat number. book: 2

Enter a seat number. book: 3

Enter a seat number. book: 4

Enter a seat number. book: 5

All first class seats (1-5) are installed. Now the remaining places are from 6 to 10.

Enter a seat number. book: 6 so on ...

+5
1

Java 1 , . , >=1 <=10, >=0 <=9, 2

seats[enterSeat-1]


seats[enterSeat]

, :

int firstFree = -1;
for (int j = 0 ; j != 5 ; i++) {
    if (!seat[j]) {
        firstFreeSeat = j;
        break;
    }
}
if (firstFreeSeat == -1) {
    System.out.printl("Sorry!");
}

</" > 1 C, ++, #, Objective C

2 , , , , - .

+6

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