if (offendingChars.indexOf(c) != -1) {
if (offendingChars.indexOf(c) == -1) {
	static String removeOffendingChars(String in) {		StringBuffer out = new StringBuffer();				int l = in.length();		for (int i = 0; i < l; i++) {			char c = in.charAt(i);			if (offendingChars.indexOf(c) != -1) {				out.append(c);			}		}				return out.toString();	}