I have two POJO classes (Student and Address) that has one to many mapping. The following is the Configuration code.

<?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.dialect">org.hibernate.dialect.MySQLDialect</property>
<property name="hibernate.connection.driver_class">com.mysql.jdbc.Driver</property>
<property name="hibernate.connection.url">jdbc:mysql://localhost:3306/database1?zeroDateTimeBehavior=convertToNull</property>
<property name="hibernate.connection.username">root</property>
<property name="hibernate.connection.pool_size">10</property>
<property name="hibernate.dialect">org.hibernate.dialect.MySQLDialect</property>
<property name="current_session_context_class">thread</property>
<property name="cache.provider_class">org.hibernate.cache.NoCacheProvider</property>
<property name="show_sql">true</property>
<property name="format_sql">true</property>
<property name="hibernate.hbm2ddl.auto">create</property>
<mapping resource="/Student.hbm.xml"/>
<mapping resource="/Address.hbm.xml"/>
</session-factory>
</hibernate-configuration>

The folder structure is
Source Package
|
|______>Default Package
| |
| |_____>Address.hbm.xml
| |_____>Student.hbm.xml
| |_____>hibernate.cfg.xml
|
|_______>oomapping
| |
| |_____>Address.java(pojo class)
| |_____>Student.java(pojo class)
| |_____>OOMapping.java(main class>
|

Can you please state the problem you are facing?

This is the error message I got:

INFO: Reading mappings from resource : /Student.hbm.xml
Failed to create sessionFactory object.org.hibernate.MappingNotFoundException: resource: /Student.hbm.xml not found
Exception in thread "main" java.lang.ExceptionInInitializerError
at oomapping.OOMapping.main(OOMapping.java:21)
Caused by: org.hibernate.MappingNotFoundException: resource: /Student.hbm.xml not found
at org.hibernate.cfg.Configuration.addResource(Configuration.java:563)
at org.hibernate.cfg.Configuration.parseMappingElement(Configuration.java:1587)
at org.hibernate.cfg.Configuration.parseSessionFactory(Configuration.java:1555)
at org.hibernate.cfg.Configuration.doConfigure(Configuration.java:1534)
at org.hibernate.cfg.Configuration.doConfigure(Configuration.java:1508)
at org.hibernate.cfg.Configuration.configure(Configuration.java:1428)
at org.hibernate.cfg.Configuration.configure(Configuration.java:1414)
at oomapping.OOMapping.main(OOMapping.java:18)
Java Result: 1
BUILD SUCCESSFUL (total time: 1 second)

Please move you hbm files in the package oomapping and cfg in src directory I also verify if the cfg mapping to hbm is correct