<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE hibernate-configuration PUBLIC
      "-//Hibernate/Hibernate Configuration DTD 3.0//EN"
      "http://hibernate.sourceforge.net/hibernate-configuration-3.0.dtd">
<hibernate-configuration>
    <session-factory>
        <property name="hibernate.connection.driver_class">com.mysql.jdbc.Driver</property>
        <property name="hibernate.connection.password">pwd</property>
        <property name="hibernate.connection.url">http://localhost:3306/test</property>
        <property name="hibernate.connection.username">root</property>
        <property name="hibernate.dialect">org.hibernate.dialect.MySQLDialect</property>
        <property name="show_sql">true</property>
        <property name="hbm2ddl.auto">create</property>
        <mapping resource="com/vaannila/course/Course.hbm.xml"/>
    </session-factory>
</hibernate-configuration>

<?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.vaannila.course.Course" table="COURSES">
      <meta attribute="class-description">
         This class represents a row in the COURSES table
      </meta>
      <id name="courseId" type="long" column="COURSE_ID">
         <generator class="native"></generator>
      </id>
      <property name="courseName" type="string" column="COURSE_NAME"
         not-null="true" />
   </class>
</hibernate-mapping>

package com.vaannila.course;

import org.hibernate.HibernateException;
import org.hibernate.Session;
import org.hibernate.Transaction;

import com.vaannila.util.HibernateUtil;

public class Main {

   /**
    * @param args
    */
   public static void main(String[] args) {
      Main obj = new Main();
      Long courseId1 = obj.saveCourse("Physics");
      Long courseId2 = obj.saveCourse("Chemistry");
      Long courseId3 = obj.saveCourse("Maths");
   }
   
   public Long saveCourse(String courseName)
   {
                          // gets the session
      Session session = HibernateUtil.getSessionFactory().openSession();
      Transaction transaction = null;
      Long courseId = null;
      try {
         transaction = session.beginTransaction();
         Course course = new Course();
         course.setCourseName(courseName);
         courseId = (Long) session.save(course);
         transaction.commit();
      } catch (HibernateException e) {
         transaction.rollback();
         e.printStackTrace();
      } finally {
         session.close();
      }
      return courseId;
   }

}