All Classes and Interfaces

Class	Description
CheckoutRepository	Executes parameterized SQL against the lab's single DataSource.
CheckoutService	Defines the transaction boundary for one local checkout use case.
DemoRunner	Prints a successful commit followed by a deliberate duplicate-key rollback.
JakartaCheckoutService	Demonstrates the Jakarta Transactions annotation on a Spring-managed bean.
OutOfStockException	Signals that an inventory row could not satisfy the reservation.
TransactionLabApplication	Starts the standalone, local JDBC transaction lab.