TextField tfemail = new TextField();
tfemail.addEventHandler(KeyEvent.KEY_TYPED, new NameFilter());
tfemail.setPromptText("Required");
Label lpass = new Label("Password: ");
PasswordField tfpass = new PasswordField();
tfpass.addEventHandler(KeyEvent.KEY_TYPED, new NameFilter());
tfpass.setPromptText("Required");
Label lname = new Label("Name: ");
TextField tfname = new TextField();
tfname.setPromptText("Required");
tfname.addEventHandler(KeyEvent.KEY_TYPED, new NameFilter());