User.hbm.xml

<?xml version="1.0" encoding="utf-8"?>
<!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.test.bean.User" table="users">
<id name="id" type="java.lang.Integer" column="id">
<generator class="increment"></generator>
</id>
<property name="firstname" type="string" column="firstname"
length="50"></property>
<property name="lastname" type="string" column="lastname"
length="50"></property>
<property name="age" type="java.lang.Integer" column="age"></property>
</class>
</hibernate-mapping>