How to add xml files in Eclipse and how to configure Hibernate

Prompt for adding Hibernate configuration file
Decompress the hibernate. jar package
Locate the hibernate-configuration-3.0.dtd and hibernate-mapping-3.0.dtd under the org \ hibernate directory
Open Eclipse --> Window --> Preferences --> Web and XML --> XML Catalog
Click Add XML Catalog Entry on the right
Location: Introduce the dtd file mentioned above

Key Type: URL
Key: Open the dtd file and paste the following path
Http://hibernate.sourceforge.net/hibernate-configuration-3.0.dtd
Http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd