How to clear the value of combox and textfield in javafx?

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JavaFX

I'm working with javafx and fxml to make a simple project.

I have a method in my project which is supposed to clear all textfields and comboboxes.

Rather than setting each textfields and comboboxes values to null one by one. I put all the nodes inside an arraylist so I can iterate and set their values to null.

I just want to know if there is a cleaner approach to this or if I'm doing this right. I'm new to javafx and fxml and a lot of things are unknown to me.

What I have tried:

This is my code for the clear button

@FXML
private ArrayList <TextField> textfieldList;
private void clear()
{
    for(Node node : textfieldList)
    {
        if(node instanceof TextField)
        {
            ((TextField) node).setText(null);
        }
        else if(node instanceof ComboBox<?>)
        {
            ((ComboBox<?>) node).getSelectionModel().select(-1);
        }
    }
}