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Criteria has some advantages over using JPQL or raw SQL, as described in this answer: type safety; refactoring friendliness; less dependence on strings (but there still is some). And one very big disadvantage: they are less readable and simply ugly. Is there a (non-JPA) Java API for accessing relational databases which is both typesafe and readable?
Timo Westkämper has done a good job with QueryDSL. This library provides a DSL for querying different persistence providers (JPA, MongoDB, Lucene…).
But I often have used hand made solutions which simplifies most common queries (list an entity restricting some of its fields), preventing me to write always the same lines. For most complex queries I switched to unreadable and verbose Criteria API.