[jboss-user] [JBoss Seam] - Hibernate : insertion in DataBase with java code.

Hi, I'm using Jboss Seam 1.2.1.GA + Jboss Server 4.0.5.GA. I'm trying to add rows in the DataBase, using hibernate, with the code. I tryed this : ChargeCollaborateuraffecteHome chargeCollaborateuraffecteHome = new ChargeCollaborateuraffecteHome(); | ChargeCollaborateurAffecte chargeCollaborateurAffecte = chargeCollaborateuraffecteHome.createInstance(); | | chargeCollaborateurAffecte.setChargeEffective(charge); | chargeCollaborateurAffecte.setChargePrevisionnelle(0); | chargeCollaborateurAffecte.setCollaborateurAffecte(this); | chargeCollaborateurAffecte.setDate(dateCharge); | chargeCollaborateuraffecteHome.setInstance(chargeCollaborateurAffecte); | | chargeCollaborateuraffecteHome.persist(); But I have an exception caused by the persist() (line 208): Caused by: java.lang.NullPointerException | at org.jboss.seam.framework.Home.updatedMessage(Home.java:40) | at org.jboss.seam.framework.EntityHome.update(EntityHome.java:40) | at com.fitnetapplication.resources.model.CollaborateurAffecte.setChargeEffective(CollaborateurAffecte.java:208) | at crossTable.action.activitesByCollaborateurCrossDataBean.sauvgarderCrossDataTable(activitesByCollaborateurCrossDataBean.java:150) | at crossTable.action.activitesByCollaborateurCrossDataBean.chercherActivites(activitesByCollaborateurCrossDataBean.java:125) | Please help a Newbie! View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4079220#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...