src/org/tiefaces/components/websheet/utility/WebSheetUtility.java
public static boolean isDate(final String s) {
		Pattern pattern = Pattern.compile(DATE_REGEX_4_DIGIT_YEAR);
		String[] terms = s.split(" ");
		Matcher matcher;
		for (String term : terms) {
			matcher = pattern.matcher(term);
			if (matcher.matches()) {
				return true;
			}
		}
		pattern = Pattern.compile(DATE_REGEX_2_DIGIT_YEAR);
		terms = s.split(" ");
		for (String term : terms) {
			matcher = pattern.matcher(term);
			if (matcher.matches()) {
				return true;
			}
		}
		return false;
	}
public static boolean isDate(final String s) {
		Pattern pattern = Pattern.compile(DATE_REGEX_4_DIGIT_YEAR);
		String[] terms = s.split(" ");
		Matcher matcher;
		for (String term : terms) {
			matcher = pattern.matcher(term);
			if (matcher.matches()) {
				return true;
			}
		}
		pattern = Pattern.compile(DATE_REGEX_2_DIGIT_YEAR);
		terms = s.split(" ");
		for (String term : terms) {
			matcher = pattern.matcher(term);
			if (matcher.matches()) {
				return true;
			}
		}
		return false;
	}
Checks if is date.

@param s
the s
@return true, if is date