problème d'authentification interface

bonjour j'ai crée une interface d'authentification et le probléme quand je remplir les champs rien ce passe

Code:

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btnValidate.addActionListener(new ActionListener() {
			@SuppressWarnings("deprecation")
			public void actionPerformed(ActionEvent e) {
				//if(!loginAdmin.getText().equals("")&&(!passwordField.getText().equals("")))
				//{
			User user = new User();
 
 
			Member membre =AdminstratorDelegate.findMemberAllById(user.getIdUser());
			Adminstrator adminstrator=AdminstratorDelegate.findAdminAllById(user.getIdUser());
			user=AdminstratorDelegate.findUserByLoginAndPassword(loginAdmin.getText(), passwordField.getText());
					if (user != null) {
						System.out.println("ok");
					if (user instanceof Adminstrator) {
 
							System.out.println("admin");
							JOptionPane.showMessageDialog(btnValidate,"authentification sucessfull");
						//	new GestionUser();
							new AdministrationPanel();
							dispose();
													}	
 
						if(user instanceof Member) {
 
							System.out.println("user");
							JOptionPane.showMessageDialog(btnValidate,"authentification sucessfull");
						new AddUser();
							dispose();
 
 
						}
			}
					}
 
		});