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Hibernate provides alternate ways of manipulating objects and in turn data available in RDBMS tables. One of the methods is Criteria API which allows you to build up a criteria query object programmatically where you can apply filtration rules and logical conditions.
The Hibernate Session interface provides createCriteria() method which can be used to create a Criteria object that returns instances of the persistence object's class when your application executes a criteria query.
Following is the simplest example of a criteria query is one which will simply return every object that corresponds to the Employee class.

Criteria cr =session.createCriteria(Employee.class);
List results =cr.list();
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