Professor.hbm.xml

<?xml version="1.0" encoding="GBK"?>

<!DOCTYPE hibernate-mapping PUBLIC
    "-//Hibernate/Hibernate Mapping DTD 2.0//EN" 
    "http://hibernate.sourceforge.net/hibernate-mapping-2.0.dtd">

<hibernate-mapping
>
    <class
        name="javamxj.inheritance.three.Professor"
        table="Professor"
        dynamic-update="false"
        dynamic-insert="false"
        select-before-update="false"
        optimistic-lock="version"
    >

        <id
            name="id"
            column="ID"
            type="java.lang.Long"
            unsaved-value="null"
        >
            <generator class="hilo">
              <!--  
                  To add non XDoclet generator parameters, create a file named 
                  hibernate-generator-params-Professor.xml 
                  containing the additional parameters and place it in your merge dir. 
              --> 
            </generator>
        </id>

        <property
            name="salary"
            type="int"
            update="true"
            insert="true"
            access="property"
            column="salary"
        />

        <property
            name="name"
            type="java.lang.String"
            update="true"
            insert="true"
            access="property"
            column="name"
            length="24"
        />

        <!--
            To add non XDoclet property mappings, create a file named
                hibernate-properties-Professor.xml
            containing the additional properties and place it in your merge dir.
        -->

    </class>

</hibernate-mapping> 

Demo.java

/*
 * Hibernate - 继承映射(每个具体类一个表)
 * 创建日期 2005-4-9
 * @author javamxj（分享java快乐）
 * @link  Blog: htpp://javamxj.mblogger.cn  
 *              htpp://blog.csdn.net/javamxj/ 
 */
package javamxj.inheritance.three;

import java.util.Iterator;
import java.util.List;

import net.sf.hibernate.HibernateException;
import net.sf.hibernate.Session;
import net.sf.hibernate.SessionFactory;
import net.sf.hibernate.Transaction;
import net.sf.hibernate.cfg.Configuration;

public class Demo {
	public static void main(String[] args) {
		try {
			new Demo();
		} catch (HibernateException he) {
			he.printStackTrace();
		}
	}

	public Demo() throws HibernateException {		
		SessionFactory sf = new Configuration().configure()
				.buildSessionFactory();

		Session sess = sf.openSession();
		Transaction tx = null;
		try {
			tx = sess.beginTransaction();

			Student student = new Student();
			student.setName("张三");
			student.setStudentNumber("1234554321");
			sess.save(student);

			Professor professor = new Professor();
			professor.setName("李四");
			professor.setSalary(4300);
			sess.save(professor);

			tx.commit();
		} catch (HibernateException e) {
			if (tx != null)
				tx.rollback();
			throw e;
		} finally {
			sess.close();
		}

		
		sess = sf.openSession();
		tx = null;
		try {
			tx = sess.beginTransaction();
			List person = sess.find("from " + Person.class.getName());
			for (Iterator it = person.iterator(); it.hasNext();) {
				Person p = (Person) it.next();
				System.out.println("人员 '" + p.getName() + "' its class is: "
						+ p.getClass().getName());

			}

			tx.commit();
		} catch (HibernateException e) {
			if (tx != null)
				tx.rollback();
			throw e;
		} finally {
			sess.close();
		}
	}

}