Hello,
i'm newbie at Hibernate. I'm using hibernate for building a desktop application with Oracle database.
I want to learn how use the criteria to do a query. I'm reading Hibernate reference.

Can you explain me (by example) where and how i can use criteria?

Thanks.
Regards.

You can use either Criteria or HQL (Named Queries)

HQL is powerfull with advanced features and usefull for more difficult problems.

Criteria allows you to built a query at runtime. But criteria are often less readable then HQL but are validated at compile time.

A Criteria is a tree of Criterion instances. (Restrictions return criterion instances).

For example:

Criteria criteria = session.createCriteria(User.class);
criteria.add(Restrictions.like("firstname", "Scott"); //add a criterion
List result = criteria.list();

firstname is the java property in the User Class and "Scott" is its value.

Thanks....I've solved.