JPA select query with timestamp and date fields fail to retrieve results

Cuando necesitemos hacer consultas con dates, tipo date, y timestamp se hace asi:

Date and Calendar parameter values require special methods in order to specify what they represent, such as a pure date, a pure time or a combination of date and time, as explained in detail in the Date and Time (Temporal) Types section For example, the following invocation passes a Date object as a pure date (no time): Query query = em.createQuery("Select f From usuarios f where f.fecha=:date"); query.setParameter("date", new java.util.Date(), TemporalType.DATE); and timestamp query.setParameter("date", new java.util.Date(), TemporalType.TIMESTAMP);