Making and cancelling reservations

Question

I tried making a reservation program. however, i am not so conversant with using threads. the program is supposed to make a booking for a client. the client can make more than one booking and they can also cancel their booking(s). how can i achieve this using threads? the code i came up with is:
import java.util.Scanner;
public class Reserve
    private static int[] seats = new int[20];
    public static void main(String args[])
            for (int i = 0; i < 20; i++)
             seats[i] = 0;
             Scanner input = new Scanner(System.in);
               int choice = 1;
               System.out.print("Please enter 1 to book a seat or 2 to exit: ");
               choice = input.nextInt();
                while (choice != 2)
                   int seatnumber = 0;
                     // If they choose a seat, attempt to book it.
                     if (choice == 1)
                        seatnumber = bookseat();
                           // Booking a seat was successful.
                            System.out.println("You are in luck, we have a seat available!");
                            printBoardingPass(seatnumber);
                     else
                         // Print an error message if they did not choose 1 or 2 for their choice.
                         System.out.println("Invalid choice made.");
                         choice = 0;
                        // No seats were available.
                        if (seatnumber == -1)
                            System.out.println("We are sorry, there are no seats available.");
                            System.out.println();
                        // Reprompt for a choice
                        System.out.print("Please enter 1 book a seat, or 2 to exit: ");
                        choice = input.nextInt();
    // This function checks for seats and returns seat number or -1 if full.
    private static int bookseat()
        for (int i = 0; i < 20; i++)
            if (seats[i] == 0)
                seats[i] = 1;
                return i + 1;
        return -1;
    // This prints out a boarding pass message with their seat number
    private static void printBoardingPass(int seatnumber)
        System.out.println("Boarding pass for seat number: " + seatnumber);
}

Answer 1

timon_zed wrote:
would that apply to the use of threads or for a regular class? straight across the table. how can i develop something to develop a booking and cancellation program using threads? i was told i could make it easier to use if i made it using threads, but am just a newbie. so how, please how can i use threads for this program?Whoever told you that it would be easier to use threads, was wrong on two counts. First, it almost certainly won't be any easier. Secondly, you shouldn't use threads for that reason anyway.
If this is a homework assignment and if your teacher didn't tell you that you have to use threads, then don't. You're just making trouble for yourself.
If this is a homework assignment and if your teacher did tell you that you have to use threads, then tell us exactly what that requirement is. And don't be deceitful about it being homework; people around here usually don't want to do your homework for you, but there's a general willingness to help.
If this isn't homework, but a real world project to build some kind of booking system...then, threads may or may not enter into it. (Well, it would almost certainly enter into it in some sense, but chances are in the real world you'd use some kind of existing system that handles the multithreading for you.)