ensuring that tasks like booking validation, payment processing, and confirmation occur concurrently to improve user experience.

The SwiftBookings System is divided into three key operations, each handled by a different thread:

$1.$ BookingValidationThread: This thread checks if there are available slots for a reservation and validates the details provided by the user.

$2.$ PaymentProcessingThread: After the booking is validated, this thread processes the payment for the booking. If the payment is successful, it notifies the system that the booking can proceed to confirmation.

$3.$ ConfirmationThread: Once the payment is processed, this thread sends the booking confirmation to the customer and updates the reservation system.

The Problem: Recently, SwiftBookings has encountered issues with bookings getting stuck in the system due to deadlocks and delays in confirmation. The development team believes these issues are caused by poor thread synchronization and prioritization.

Your task is to analyze the thread management in this system, focusing on synchronization, prioritization, and thread lifecycle.

Here is a code sample of the system:

$```$

class SwiftBookingSystem $\{$

$//$ Shared resources $($could lead to synchronization issues$)$

private static boolean isBookingValidated $=$ false;

private static boolean isPaymentProcessed $=$ false;

public static void main$($String$[]$ args$)\{$

$//$ Creating and starting threads

Thread bookingValidationThread $=$ new BookingValidationThread$()$;

Thread paymentProcessingThread $=$ new PaymentProcessingThread$()$;

Thread confirmationThread $=$ new ConfirmationThread$()$;

bookingValidationThread $.$ setPriority $($Thread$.$MAX$\_$PRIORIY$)$;

paymentProcessingThread.setPriority $($Thread$.$NORM$\_$PRIORITY$)$;

confirmationThread.setPriority$($Thread$.$MIN$\_$PRIORITY$)$;

bookingValidationThread.start$()$;

paymentProcessingThread.start$()$;

confirmationThread.start$()$;

$\}$

$```(6\mathrm{.}1)$ Potential Deadlocks:

$-$ Identify potential deadlock situations in the code.

$-$ Suggest specific modifications that could be made to avoid these deadlocks.

$(6\mathrm{.}2)$ Thread Synchronization:

$-$ Identify the points in the code where synchronization mechanisms are used.

$-$ Explain why synchronization is necessary in this system.

$-$ Describe how the code prevents race conditions between the PaymentProcessingThread and the ConfirmationThread. $(6\mathrm{.}3)$ Thread Lifecycle:

$-$ Specify the conditions under which each thread transitions into the "Blocked" state.

$-$ Explain what triggers each thread to return to the "Ready" state.

$(6\mathrm{.}4)$ Thread Prioritization:

$-$ Based on the provided code, identify which thread has the highest priority.

$-$ Explain how thread prioritization affects the execution order of tasks in the system.

$(6\mathrm{.}5)$ Asynchronous Execution:

$-$ Discuss whether the unpredictability of thread execution could impact the booking confirmation process and customer satisfaction.