i am new to hibernate...i tried a simple example but it is thowing an exception called mapping exception....please help me .......
i am giving the details


<?xml version="1.0"?>

<!DOCTYPE hibernate-mapping

PUBLIC "-//Hibernate/Hibernate Mapping DTD 2.0//EN"

"http://hibernate.sourceforge.net/hibernate-mapping-2.0.dtd">


<hibernate-mapping>
<class name="one.first" table="first">
<id name="id" type="int" column="id">
<generator class="identity"/>
</id>
<property name="first" type="string" not-null="true"/>
<property name="second" type="string" not-null="true"/>

</class>

</hibernate-mapping>



<?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">pawan</property>
<property name="hibernate.connection.url">jdbc:mysql://localhost:3307/hibi</property>
<property name="hibernate.connection.username">pawan</property>

<property name="hibernate.dialect">org.hibernate.dialect.MySQLDialect</property>

<!-- Mapping Files -->
<mapping resource = "one/first.hbm.xml"/>


</session-factory>
</hibernate-configuration>

It would help if you posted the exception.

Also, are you sure one.first is the right class?