write a java program to book a slot for KYC validation, show available slots to user

Question

Book a slot for KYC validation · Accepted Answer

import java.util.ArrayList;
import java.util.List;
import java.util.Scanner;

class SlotBooking {
    private List availableSlots;
    private List bookedSlots;

    public SlotBooking() {
        availableSlots = new ArrayList();
        bookedSlots = new ArrayList();
        // Initialize some slots for KYC validation
        availableSlots.add("10:00 AM - 10:30 AM");
        availableSlots.add("11:00 AM - 11:30 AM");
        availableSlots.add("12:00 PM - 12:30 PM");
        availableSlots.add("02:00 PM - 02:30 PM");
        availableSlots.add("03:00 PM - 03:30 PM");
        availableSlots.add("04:00 PM - 04:30 PM");
    }

    // Display available slots
    public void showAvailableSlots() {
        if (availableSlots.isEmpty()) {
            System.out.println("No available slots. All slots have been booked.");
        } else {
            System.out.println("Available slots:");
            for (int i = 0; i  availableSlots.size()) {
            System.out.println("Invalid slot selection.");
            return;
        }
        
        // Slot booking
        String bookedSlot = availableSlots.get(slotNumber - 1);
        bookedSlots.add(bookedSlot);
        availableSlots.remove(slotNumber - 1);
        System.out.println("You have successfully booked the slot: " + bookedSlot);
    }

    // Show booked slots
    public void showBookedSlots() {
        if (bookedSlots.isEmpty()) {
            System.out.println("No slots have been booked yet.");
        } else {
            System.out.println("Booked slots:");
            for (String slot : bookedSlots) {
                System.out.println(slot);
            }
        }
    }
}

public class KYCSlotBookingApp {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        SlotBooking slotBooking = new SlotBooking();
        
        while (true) {
            System.out.println("
KYC Slot Booking System");
            System.out.println("1. Show available slots");
            System.out.println("2. Book a slot");
            System.out.println("3. Show booked slots");
            System.out.println("4. Exit");
            System.out.print("Choose an option: ");
            
            int choice = scanner.nextInt();
            
            switch (choice) {
                case 1:
                    slotBooking.showAvailableSlots();
                    break;
                case 2:
                    slotBooking.showAvailableSlots();
                    if (!slotBooking.availableSlots.isEmpty()) {
                        System.out.print("Enter slot number to book: ");
                        int slotNumber = scanner.nextInt();
                        slotBooking.bookSlot(slotNumber);
                    }
                    break;
                case 3:
                    slotBooking.showBookedSlots();
                    break;
                case 4:
                    System.out.println("Exiting the system...");
                    scanner.close();
                    return;
                default:
                    System.out.println("Invalid choice, please try again.");
            }
        }
    }
}

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