<dependency>
<groupId>jakarta.persistence</groupId>
<artifactId>jakarta.persistence-api</artifactId>
<version>2.2.3</version>
</dependency>
import jakarta.persistence.Entity;
import jakarta.persistence.Id;
@Entity
public class User {
@Id
private int id;
private String name;
}
<?xml version="1.0" encoding="UTF-8"?>
<persistence version="2.2" xmlns="http://xmlns.jcp.org/xml/ns/persistence"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/persistence http://xmlns.jcp.org/xml/ns/persistence/persistence_2_2.xsd">
<persistence-unit name="myPersistenceUnit">
<jta-data-source>yourDataSource</jta-data-source>
<class>com.example.User</class>
</persistence-unit>
</persistence>
import jakarta.persistence.EntityManager;
import jakarta.persistence.EntityManagerFactory;
import jakarta.persistence.EntityTransaction;
import jakarta.persistence.Persistence;
public class Main {
public static void main(String[] args) {
EntityManagerFactory entityManagerFactory = Persistence.createEntityManagerFactory("myPersistenceUnit");
EntityManager entityManager = entityManagerFactory.createEntityManager();
EntityTransaction transaction = entityManager.getTransaction();
transaction.begin();
User user = new User();
user.setId(1);
user.setName("John Doe");
entityManager.persist(user);
transaction.commit();
entityManager.close();
entityManagerFactory.close();
}
}
