Converting to a specific charset

CharsetConversion.java

private String toSingleByteISO8859(String unicode) {
	if (unicode != null) {
		try {
			ByteBuffer encoded = ISO_8859_1.encode(unicode);
			String convertedString = new String(encoded.array(), ISO_8859_1.displayName());
			return convertedString;
		} catch (UnsupportedEncodingException e) {
			logger.error("Problems converting to ISO-8859-1", e);
			return "?";
		}
	}
	return unicode;
}