Detailed explanation of the use of java transaction API

Detailed explanation of the use of java transaction API Affairs is very important for many applications, and it can ensure the consistency and reliability of the database operation.Java provides many APIs for managing and controlling affairs. The following will introduce the Java transaction API in detail. In Java, the transaction API is mainly composed of two core interfaces: `javax.transaction.usertransaction` and` javax.transaction.tractionManager`. 1. `javax.transaction.usertransaction` interface: `UseRTRANSACTION` interface allows applications to start, submit and roll back transactions.Below is a sample code that uses the `userTransaction` interface: import javax.transaction.UserTransaction; import javax.naming.InitialContext; // Get UserTransaction instance UserTransaction utx = (UserTransaction) new InitialContext().lookup("java:comp/UserTransaction"); // Starting transaction utx.begin(); try { // Execute some operations in transactions // Submit a transaction utx.commit(); } catch (Exception e) { // Roll back the transaction when it is abnormal utx.rollback(); } 2. Javax.transaction.transactionManager` interface: `TransactionManager` interface is used to manage the life cycle of transactions, and provides some other transaction control methods, such as setting timeout, hanging and recovery transactions.Below is an example code that uses the `TransactionManager` interface: import javax.transaction.TransactionManager; import javax.transaction.Transaction; import javax.naming.InitialContext; // Get transactionManager instance TransactionManager tm = (TransactionManager) new InitialContext().lookup("java:/TransactionManager"); // Starting transaction tm.begin(); try { // Execute some operations in transactions // Submit a transaction tm.commit(); } catch (Exception e) { // Roll back the transaction when it is abnormal tm.rollback(); } It should be noted that the specific implementation of transactions depends on the Java EE container or framework used.For example, in common Java EE containers (such as Tomcat and Jetty), instances of `UseRTRANSACTION and` TRANSACTIONAGER `and` TRANSACTIONGER `can be found through JNDI.In the Spring framework, Spring's transaction manager can be used to control the transaction. The control of the database transaction using the Java transaction API is very simple. Just call the `Begin ()` method before starting the database operation, and then call the `Commit ()` method after the operation is completed to submit the transaction.`rollback ()` method rolls back. It should be noted that only by using Java's transaction API on the database and driver supporting transactions can realize real transaction control.If the database does not support transactions, or the driver used does not support transactions, the Java transaction API cannot be used. To sum up, Java's affairs API provides us with a simple way to manage and control transactions.By using the `UseRTRARANSACTION and` TransactionsManager` interfaces, you can easily start, submit and roll back transactions to ensure the consistency and reliability of the database operation.Whether in the Java EE container or the Spring framework, transaction API is a very important and practical tool.