Using

import org.hibernate.annotations.Table;
@Table(appliesTo="Datas_De")
public class Datas_De implements java.io.Serializable

crashes, if appliesTo not exact equal to the class name.

This can be seen in
package org.hibernate.cfg.annotations;
in class EntityBinder
in method
public void processComplementaryTableDefinitions(org.hibernate.annotations.Table table)
at
if ( pcTable.getQuotedName().equals( appliedTable ) )
{
..............

So the appliedTable value MUST BE equal to pcTable.getQuotedName()
for correct working. I think that is not correct to use the annotation.

(Also the exception after that prints not the correct reason back)