How to get rid of 'java.lang.IllegalArgumentException: Unknown entity' while running a simple hibernate app?

Question

I am new to Hibernate. While creating a small app using it I got following exception:

Exception in thread \"main\" java.lang.IllegalArgumentException: Unknown entit

Answer 1

Depends bit about project structure, but likely by adding following to persistence.xml directly under persistence-unit element.

model.Students
model.Address

Exactly like this:

  
    org.hibernate.ejb.HibernatePersistence

    students
    model.Students
    model.Address
    false
    
      
      
      
      
      
    
  

By the way, why do you configure properties like hibernate.dialect in both persistence.xml and hibernate.cfg.xml?