contact.java
------------

package com.tutorial.hibernate;

public class Contact {
	private String firstName;
	private String lastName;
	private String email;
	private long id;

	public String getEmail() {
		return email;
	}

	public String getFirstName() {
		return firstName;
	}


	public String getLastName() {
		return lastName;
	}

	public void setEmail(String string) {
		email = string;
	}

	public void setFirstName(String string) {
		firstName = string;
	}

	public void setLastName(String string) {
		lastName = string;
	}


	public long getId() {
		return id;
	}


	public void setId(long l) {
		id = l;
	}

}

--------------------------------------------------------
FirstExample.java
------------------
package com.tutorial.hibernate;
import org.hibernate.Session;
import org.hibernate.SessionFactory;
import org.hibernate.Transaction;
import org.hibernate.cfg.Configuration;
public class FirstExample {
	public static void main(String[] args) {
		Session session = null;
		try {
			SessionFactory sessionFactory = new 
Configuration().configure()
					.buildSessionFactory
();
			session = sessionFactory.openSession
();
			Transaction tx = 
session.beginTransaction();
			Contact contact = new Contact();
			contact.setId(3);
			contact.setFirstName("sita");
			contact.setLastName("ram");
			contact.setEmail
("sitam75@gmail.com");
			session.save(contact);
			tx.commit();	
		} catch (Exception e) {
			System.out.println(e.getMessage());

		} finally {
			// Actual contact insertion will 
happen at this step
			session.flush();
			session.close();

		}

	}
}

--------------------------------------------------------
contact.hbm.xml
---------------

<?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="com.tutorial.hibernate.Contact" 
table="CONTACT">
	   <id name="id" type="long" column="ID" >
	   <generator class="assigned"/>
	  </id>

	  <property name="firstName">
		 <column name="FIRSTNAME" />
	  </property>
	  <property name="lastName">
		<column name="LASTNAME"/>
	  </property>
	  <property name="email">
		<column name="EMAIL"/>
	  </property>
   </class>

   </hibernate-mapping>

-----------------------------------------------------
contact.hbm.xml file is a selfmapping file.