@Nullable
	@Override
	protected TextFormatter.Change processTextChange(@Nonnull TextFormatter.Change change, @Nonnull String changeText) {
		try {
			// Must be hex text
			Integer.parseInt(changeText, 16);
			return change;
		} catch (NumberFormatException ex) {
			// Not hex, discard the change.
			return null;
		}
	}
Hex cell for displaying a single byte as a hex string.

@author Matt Coley
recaf-ui/src/main/java/software/coley/recaf/ui/pane/editing/hex/cell/EditableHexCell.java