public boolean findUserName(String uname){
SessionFactory instance = Singleton.getPersistenceManager();

boolean result = false;

try {
Session session = instance.openSession();
Transaction tx = session.beginTransaction();
Query q = session.createQuery("from UserDirectory d where d.username = :uname");
q.setParameter("uname", uname);
result = q.list().isEmpty();
tx.commit();
session.close();

} catch (HibernateException e) {
e.printStackTrace();
}
return result;
}

And I receive the following error

net.sf.hibernate.QueryException: in expected: d [from UserDirectory d where d.username = :uname]

at net.sf.hibernate.hql.FromParser.token(FromParser.java:102)

at net.sf.hibernate.hql.ClauseParser.token(ClauseParser.java:87)

at net.sf.hibernate.hql.PreprocessingParser.token(PreprocessingParser.java:123)

at net.sf.hibernate.hql.ParserHelper.parse(ParserHelper.java:29)

at net.sf.hibernate.hql.QueryTranslator.compile(QueryTranslator.java:149)

at net.sf.hibernate.hql.QueryTranslator.compile(QueryTranslator.java:138)

at net.sf.hibernate.impl.SessionFactoryImpl.getQuery(SessionFactoryImpl.java:294)

at net.sf.hibernate.impl.SessionImpl.getQueries(SessionImpl.java:1562)

at net.sf.hibernate.impl.SessionImpl.find(SessionImpl.java:1533)

at net.sf.hibernate.impl.QueryImpl.list(QueryImpl.java:39)

at com.users.core.UserDirectory.findUserName(UserDirectory.java:136)

at com.users.core.UserDirectory.main(UserDirectory.java:176)

Any idea?
King Regards!
Natalia