addBehaviour(new CyclicBehaviour() {
        private int counter;
        JOptionPane jop  = new JOptionPane();
        @Override
        public void action() {
            ++counter;
            ACLMessage aclMessage = receive();
            if (aclMessage!=null){
                try {
                    Object[] obj=(Object[]) aclMessage.getContentObject();
                    String NomUtilisateur=(String) obj[0];
                    String Password=(String) obj[1];
                    try {
                        String query="select * from admin where Username=? and Password=?";

                        PreparedStatement pst=connection.prepareStatement(query);
                        pst.setString(1,NomUtilisateur);
                        pst.setString(2,Password);
                        ResultSet rs=pst.executeQuery();
                        int count=0;

                        while(rs.next()) {
                            count=count+1;}
                        if (count==1){
                            ACLMessage msgReply=aclMessage.createReply();
                            msgReply.setPerformative(ACLMessage.INFORM);
                            msgReply.setContent("Nom d'utilisateur et mot de passe est correct");
                            send(msgReply);

                            }
                        else if (count<1){

                            ACLMessage msgReply=aclMessage.createReply();
                            msgReply.setPerformative(ACLMessage.INFORM);
                            msgReply.setContent("Nom d'utilisateur et mot de passe est incorrect, essayez à nouveau ...");
                            send(msgReply);

                            }
                        rs.close();
                        pst.close();

                    } catch (Exception e) {

                        e.printStackTrace();

                    }

                } catch (UnreadableException e) {
                    // TODO Auto-generated catch block
                    e.printStackTrace();
                }



        }
            else block();
        }

    });