java - Enable to display jcombobox after filling some jtextfields -


i've form wich contains textfields , jcomboxes. first jcombox contains names of groups ( libelle_groupe in code) , other 1 : status value ( valeur in code). after choosing jcombobox value, try id of both group , status database insert table : compte_utilisateur. jcomboboxes last ones in form. before touching of textfields, can choose comboboxes values. onces, 1 of textfields touched, can't choose anymore values both jcomboboxes. 1 know why? here code fill combo box database: 

private void fillcombo(){  preparedstatement pst=null;      resultset rs=null;  try{     string sql="select * groupe";       pst=  (preparedstatement) maconnexion.obtenirconnexion().preparestatement(sql);       rs=pst.executequery();     while(rs.next()){     string libelle_groupe=rs.getstring("id_groupe");  combo_name.additem(libelle_groupe);  }  }  catch(exception e){ joptionpane.showmessagedialog(null, e);}  }

code insert data db : 

private void jbutton3actionperformed(java.awt.event.actionevent evt) {                                              preparedstatement pst=null;       try { string requete="insert compte_utilisateur(id_compte, nom, prenom, matricule, id_groupe, id_statut) values (?,?,?,?,?,?)";        pst=maconnexion.obtenirconnexion().preparestatement(requete);      pst.setstring(1, jtidf.gettext());     pst.setstring(2, jtnom.gettext());     pst.setstring(3, jtprenom.gettext());     pst.setstring(4, jtmatricule.gettext());     string comb1=combo_name.getselecteditem().tostring();     pst.setstring(5, comb1);     string comb2=jcombobox1.getselecteditem().tostring();     pst.setstring(6, comb2);      pst.execute(); }     catch(exception e){e.printstacktrace(); }  }


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