<!DOCTYPE hibernate-mapping PUBLIC
"-//Hibernate/Hibernate Mapping DTD//EN"
"http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd">
<hibernate-mapping package="eg">
<class name="Cat" table="CATS">
<id name="id" column="uid" type="long">
<generator class="hilo"/>
</id>
<property name="birthdate" type="date"/>
<property name="color" not-null="true"/>
<property name="sex" not-null="true"/>
<property name="weight"/>
<joined-subclass name="DomesticCat" table="DOMESTIC_CATS">
<key column="id"/>
<property name="name" type="string"/>
</joined-subclass>
</class>
</hibernate-mapping>

        Session session = null;
       try
        {
            session = PersistenceSessionFactory.getCurrentSession();
            Transaction transaction = session.beginTransaction();
           Domestic Cat cat - new DomesticCat();
          cat.setBirthdate(new Date());
          cat.setColor("Black");
          cat.setName("HibernateCat");

            session.save(cat);
            transaction.commit();
        } catch (HibernateException hbx)
        {
            hbx.printStackTrace();
        } finally
        {
            session.flush();
        }