create database hibernate;

use hibernate;

create table Student(id int primary key,name varchar(20),age int);

<?xml version='1.0' encoding='utf-8'?>
<!DOCTYPE hibernate-configuration PUBLIC
  "-//Hibernate/Hibernate Configuration DTD 3.0//EN"
  "http://www.hibernate.org/dtd/hibernate-configuration-3.0.dtd">
<hibernate-configuration>
 <session-factory>
  <!-- Database connection settings -->
  <property name="connection.driver_class">com.mysql.jdbc.Driver</property>
  <property name="connection.url">jdbc:mysql://localhost/hibernate</property>
  <property name="connection.username">XXX</property>
  <property name="connection.password">XXXX</property>
  <!-- JDBC connection pool (use the built-in) -->
  <!--
  <property name="connection.pool_size">1</property>
   -->
  <!-- SQL dialect -->
  <property name="dialect">org.hibernate.dialect.MySQLDialect</property>
  <!-- Enable Hibernate's automatic session context management -->
  <property name="current_session_context_class">thread</property>
  <!-- Disable the second-level cache -->
  <property name="cache.provider_class">org.hibernate.cache.internal.NoCacheProvider</property>
  <!-- Echo all executed SQL to stdout -->
  <property name="show_sql">true</property>
  <!-- Drop and re-create the database schema on startup -->
  <!--
  <property name="hbm2ddl.auto">update</property>
  -->
  <mapping resource="com/huxing/hibernate/model/Student.hbm.xml"/>
 </session-factory>
</hibernate-configuration>

public class Student {
  private int id;
  private String name;
  private int age;
 public int getId() {
  return id;
 }
 public void setId(int id) {
  this.id = id;
 }
 public String getName() {
  return name;
 }
 public void setName(String name) {
  this.name = name;
 }
 public int getAge() {
  return age;
 }
 public void setAge(int age) {
  this.age = age;
 }
}

<?xml version="1.0"?>
<!DOCTYPE hibernate-mapping PUBLIC
  "-//Hibernate/Hibernate Mapping DTD 3.0//EN"
  "http://www.hibernate.org/dtd/hibernate-mapping-3.0.dtd">
<hibernate-mapping package="com.huxing.hibernate.model">
 <class name="Student" table="student">
  <id name="id" column="id">
  </id>
  <property name="name" type="string" column="name"/>
  <property name="age" type="int" column="age"/>
 </class>
</hibernate-mapping>

import org.hibernate.Session;
import org.hibernate.SessionFactory;
import org.hibernate.cfg.Configuration;
import com.huxing.hibernate.model.Student;
public class StudentTest {
 public static void main(String[] args) {
  Student a = new Student();
  a.setId(123);
  a.setAge(32);
  a.setName("hello hibernate!");
  Configuration cfg = new Configuration();
  SessionFactory cf = cfg.configure().buildSessionFactory();
  Session session = cf.openSession();
  session.beginTransaction();
  session.save(a);
  session.getTransaction().commit();
  session.close();
  cf.close();
 }
}