@Table(name = “employee”)
public class Employee implements
Serializable {
public Employee() {
}
@Id
@Column(name = “id”)
Integer id;
@Column(name = “name”)
String name;
public Integer getId() {
return id;
}
public void setId(Integer id) {
this.id = id;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
}

In the EJB word the entities represent the persistence object. This can be achieved by @Entity at the class level. @Table(name = “employee”) annotation tells the entity is
mapped with the table employee in the database. Mapped classes must declare the primary key column of the database table. Most classes will also have a Java-Beans-style property holding the unique identifier of an instance. The @Id element defines the mapping from that property to the primary key column. @Column is used to map the entities with the column in the database.

Step 4: Real application file which has the
actual logic manipulate the POJO

The following code demonstrates how to store an entity in the database. The code is identical as you have used in the Hibernate applications.

package net.roseindia;
import org.hibernate.Session;
import org.hibernate.SessionFactory;
import org.hibernate.Transaction;
public class Example1 {
/**
* @param args
*/
public static void main(String[] args)
throws Exception {
/** Getting the Session Factory and
session */
SessionFactory session =
HibernateUtil.getSessionFactory();
Session sess =
session.getCurrentSession();
/** Starting the Transaction */
Transaction tx = sess.beginTransaction();
/** Creating POJO */
Employee pojo = new Employee();
pojo.setId(new Integer(5));
pojo.setName(“XYZ”);
/** Saving POJO */
sess.save(pojo);
/** Commiting the changes */
tx.commit();
System.out.println(“Record Inserted”);
/** Closing Session */
session.close();
}
}

Output: