Restricting a TextField input to hexadecimal values in Java FX

Question

How can I restrict the input from the user to only hexadecimal values? With decimal notation the range is from 0 to 16383, but I would like to let the user type an hexadecimal n

Answer 1

best way to do it is with regular expressions:

yourTextField.textProperty().addListener(new ChangeListener() {
        @Override
        public void changed(ObservableValue observable, String oldValue,
                            String newValue) {
            if (!newValue.matches("^[0-9A-F]+$")) {
                yourTextField.setText(newValue.replaceAll("[^\\d]", ""));
            }
        }
    });

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