Resolve the error org.hibernate.MappingException: Unknown entity

I was facing this issue when I started implementing my first hibernate application. I have tried to find the solution over the technical forums. But I could not really get the answer which has fixed the issue. So I am posting the solution which would help you too. Reason: hibernate.cfg.xml does not have the resource mapping where the entity mapping is done.
 

Resolution: Add the mapping file name (where entity mapping is done) to the hibernate.cfg.xml .Highlighted in red color below.
 

   <session-factory>

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

    <property name="connection.driver_class">com.mysql.jdbc.Driver</property>

    <property name="connection.url">jdbc:mysql://localhost:3306/HibDB</property>

    <property name="connection.username">root</property>

    <property name="connection.password">pass123</property>

    <mapping resource="com\sabhahit\mapping\Student.hbm.xml"/>

  </session-factory>

 

 Stractrace:org.hibernate.MappingException: Unknown entity: com.sabhahit.objects.Student                at org.hibernate.impl.SessionFactoryImpl.getEntityPersister(SessionFactoryImpl.java:514)                at org.hibernate.impl.SessionImpl.getEntityPersister(SessionImpl.java:1302)                at org.hibernate.event.def.AbstractSaveEventListener.saveWithGeneratedId(AbstractSaveEventListener.java:89)                at org.hibernate.event.def.DefaultSaveOrUpdateEventListener.saveWithGeneratedOrRequestedId(DefaultSaveOrUpdateEventListener.java:186)                at org.hibernate.event.def.DefaultSaveEventListener.saveWithGeneratedOrRequestedId(DefaultSaveEventListener.java:33)                at org.hibernate.event.def.DefaultSaveOrUpdateEventListener.entityIsTransient(DefaultSaveOrUpdateEventListener.java:175)                at org.hibernate.event.def.DefaultSaveEventListener.performSaveOrUpdate(DefaultSaveEventListener.java:27)                at org.hibernate.event.def.DefaultSaveOrUpdateEventListener.onSaveOrUpdate(DefaultSaveOrUpdateEventListener.java:70)                at org.hibernate.impl.SessionImpl.fireSave(SessionImpl.java:530)                at org.hibernate.impl.SessionImpl.save(SessionImpl.java:518)                at org.hibernate.impl.SessionImpl.save(SessionImpl.java:514)                at com.sabhahit.utils.BasicCRUDOperations.doCRUDOperations(BasicCRUDOperations.java:30)                at com.sabhahit.utils.FirstHibernateApp.main(FirstHibernateApp.java:31)