What does the rollback() method do in JDBC?

The rollback() method in JDBC is used to undo all changes made during the current transaction. When auto-commit is disabled, multiple SQL statements can be executed within a transaction. If an error occurs or if the operation needs to be aborted, the rollback() method can be called to revert all changes made since the transaction began, effectively restoring the database to its previous state.

The ability to roll back transactions is a critical feature in database management, as it ensures data integrity and consistency even in the face of errors or unexpected issues. By rolling back a transaction, developers can prevent partial or incomplete changes from being applied to the database, avoiding potential data corruption or inconsistencies.

Understanding how to use the rollback() method is essential for implementing robust error handling and transaction management strategies in JDBC applications. It provides a safety net that allows developers to handle failures gracefully and maintain the integrity of the database.