// We presume 'data' is filled with the message, possibly over 510
// characters, to send, as a string.
final String message = "lorem ipsum dolor sit amet...";

// This number will be 510 (the maximum length of an IRC message)
// minus the prefix ("BotName!~user@host NOTICE OriginatorName :")
final int safeLength = originator.safeNoticeLength();

// 1. Encode the message as UTF-8. This step may or may not be
// necessary in some programming environments where all strings are
// bytes.
final byte[] data = asUTF8Bytes(message);
int cur = 0;
// 2. Walk along the message bytes...
while (cur < data.length) {
	if (data.length - cur <= safeLength) {
		// End of message. Issue fully.
		originator.sendNotice(trim(asUTF8String(data, cur, data.length - cur)));
		cur = data.length;
	} else {
		final int first = cur;
		int last = cur;

		// Find the last space in this message.
		while (cur < first + safeLength) {
			if (data[cur] == (byte) ' ')
				last = cur + 1;

			cur++;
		}
		if (last == first)
			last = cur; // None found, this is a really long word...
			// Just cut the message at the safe length.
		else if (data[cur] == (byte) ' ') {
			// Spaces just after a word that would fit.
			last = cur + 1;
			while (last < data.length && data[last] == (byte) ' ')
				last++;
		}
		originator.sendNotice(trim(asUTF8String(data, first, last - first)));
		cur = last;
	}
}