javafx textfield only numbers
// force the field to be numeric only
textField.textProperty().addListener(new ChangeListener<String>() {
@Override
public void changed(ObservableValue<? extends String> observable, String oldValue,
String newValue) {
if (!newValue.matches("\d*")) {
textField.setText(newValue.replaceAll("[^\d]", ""));
}
}
});