Use Two Sessions

import java.util.*;

import org.hibernate.*;
import org.hibernate.criterion.*;

public class Main {
 
 
 public static void main(String[] args) {
 HibernateUtil.setup("create table EVENTS ( uid int, name VARCHAR, start_Date date, duration int);");
 
 // hibernate code start

 HibernateFactory.buildSessionFactory();

 Session session = HibernateFactory.openSession();
 Session session2 = HibernateFactory.openSession();

 Event event = new Event();
 event.setName("Name");

 session.save(event);
 session.flush();

 Event event2 = (Event) session2.load(Event.class, event.getId());
 System.out.println(event2.getName());

 

 HibernateUtil.checkData("select uid, name from events"); 
 // hibernate code end
 }
 
}

<?xml version="1.0"?>
<!DOCTYPE hibernate-mapping PUBLIC
 "-//Hibernate/Hibernate Mapping DTD 3.0//EN"
 "http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd">
<hibernate-mapping >
 <class name="Event" table="events">
 <id name="id" column="uid" type="long">
 <generator class="increment"/>
 </id>
 <property name="name" type="string"/>
 <property name="startDate" column="start_date" type="date"/>
 <property name="duration" type="integer"/>
 </class>
</hibernate-mapping>

import java.io.Serializable;
import java.util.Date;
import java.util.Set;
import java.util.LinkedHashSet;

public class Event implements Serializable {
 private Long id;
 private int duration;
 private String name;
 private Date startDate;

 public Event() {

 }

 public Event(String name) {
 this.name = name;
 }

 /**
 * @hibernate.id generator-class="native" column="uid"
 * @return
 */
 public Long getId() { return id; }
 public void setId(Long id) { this.id = id; }

 /**
 * @hibernate.property column="name"
 * @return
 */
 public String getName() { return name; }
 public void setName(String name) { this.name = name; }

 /**
 * @hibernate.property column="start_date"
 * @return
 */
 public Date getStartDate() { return startDate; }
 public void setStartDate(Date startDate) { this.startDate = startDate; }

 /**
 * @hibernate.property column="duration"
 * @return
 */
 public int getDuration() { return duration; }
 public void setDuration(int duration) { this.duration = duration; }

}

/**
 * Represents Exceptions thrown by the Data Access Layer.
 */
public class DataAccessLayerException extends RuntimeException {
 public DataAccessLayerException() {
 }

 public DataAccessLayerException(String message) {
 super(message);
 }

 public DataAccessLayerException(Throwable cause) {
 super(cause);
 }

 public DataAccessLayerException(String message, Throwable cause) {
 super(message, cause);
 }
}