Im trying to run this code but it gives me the bellow exception:
any help will be appriciated.
Regards

EntityManager em = Contexts.getEntityManager();

// create a query with named parameters

Query query = em.createQuery("from User user "
+ " where user.username = :username "
+ " and user.password = :password");

// bind parameters
query.setParameter("username", getUsername());
query.setParameter("password", getPassword());


exception

javax.servlet.ServletException: Incorrect syntax near the keyword 'user'.
javax.faces.webapp.FacesServlet.service(FacesServlet.java:256)
fi.tavutaito.filter.EntityManagerFilter.doFilter(EntityManagerFilter.java:78)

root cause

java.sql.SQLException: Incorrect syntax near the keyword 'user'.
net.sourceforge.jtds.jdbc.SQLDiagnostic.addDiagnostic(SQLDiagnostic.java:368)
net.sourceforge.jtds.jdbc.TdsCore.tdsErrorToken(TdsCore.java:2816)
net.sourceforge.jtds.jdbc.TdsCore.nextToken(TdsCore.java:2254)
net.sourceforge.jtds.jdbc.TdsCore.getMoreResults(TdsCore.java:631)
net.sourceforge.jtds.jdbc.JtdsStatement.executeSQLQuery(JtdsStatement.java:477)
net.sourceforge.jtds.jdbc.JtdsPreparedStatement.executeQuery(JtdsPreparedStatement.java:777)
org.hibernate.jdbc.AbstractBatcher.getResultSet(AbstractBatcher.java:186)
org.hibernate.loader.Loader.getResultSet(Loader.java:1669)
org.hibernate.loader.Loader.doQuery(Loader.java:662)
org.hibernate.loader.Loader.doQueryAndInitializeNonLazyCollections(Loader.java:224)
org.hibernate.loader.Loader.doList(Loader.java:2145)
org.hibernate.loader.Loader.listIgnoreQueryCache(Loader.java:2029)
org.hibernate.loader.Loader.list(Loader.java:2024)
org.hibernate.loader.hql.QueryLoader.list(QueryLoader.java:392)
org.hibernate.hql.ast.QueryTranslatorImpl.list(QueryTranslatorImpl.java:333)
org.hibernate.engine.query.HQLQueryPlan.performList(HQLQueryPlan.java:172)
org.hibernate.impl.SessionImpl.list(SessionImpl.java:1114)
org.hibernate.impl.QueryImpl.list(QueryImpl.java:79)
org.hibernate.impl.AbstractQueryImpl.uniqueResult(AbstractQueryImpl.java:756)
org.hibernate.ejb.QueryImpl.getSingleResult(QueryImpl.java:63)
fi.tavutaito.action.LoginAction.login(LoginAction.java:41)
sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
java.lang.reflect.Method.invoke(Method.java:585)
org.apache.el.parser.AstValue.invoke(AstValue.java:172)
org.apache.el.MethodExpressionImpl.invoke(MethodExpressionImpl.java:276)
com.sun.facelets.el.TagMethodExpression.invoke(TagMethodExpression.java:68)
javax.faces.component.MethodBindingMethodExpressionAdapter.invoke(MethodBindingMethodExpressionAdapter.java:71)
com.sun.faces.application.ActionListenerImpl.processAction(ActionListenerImpl.java:96)
javax.faces.component.UICommand.broadcast(UICommand.java:384)
javax.faces.component.UIViewRoot.broadcastEvents(UIViewRoot.java:473)
javax.faces.component.UIViewRoot.processApplication(UIViewRoot.java:785)
com.sun.faces.lifecycle.InvokeApplicationPhase.execute(InvokeApplicationPhase.java:97)
com.sun.faces.lifecycle.LifecycleImpl.phase(LifecycleImpl.java:243)
com.sun.faces.lifecycle.LifecycleImpl.execute(LifecycleImpl.java:113)
javax.faces.webapp.FacesServlet.service(FacesServlet.java:244)
fi.tavutaito.filter.EntityManagerFilter.doFilter(EntityManagerFilter.java:78)

i have solved the problem,
the solutuon under this topic:
http://forum.hibernate.org/viewtopic.php?t=989077&highlight=incorrect+syntax+keyword