校驗日期格式

public static boolean checkDate(String date) {
 String datePattern1 = "\\d{4}-\\d{2}-\\d{2}";
 String datePattern2 = "^((\\d{2}(([02468][048])|([13579][26]))"
 + "[\\-\\/\\s]?((((0?[13578])|(1[02]))[\\-\\/\\s]?((0?[1-9])|([1-2][0-9])|"
 + "(3[01])))|(((0?[469])|(11))[\\-\\/\\s]?((0?[1-9])|([1-2][0-9])|(30)))|(0?2[\\-\\/\\s]?"
 + "((0?[1-9])|([1-2][0-9])))))|(\\d{2}(([02468][1235679])|([13579][01345789]))[\\-\\/\\s]?("
 + "(((0?[13578])|(1[02]))[\\-\\/\\s]?((0?[1-9])|([1-2][0-9])|(3[01])))|(((0?[469])|(11))[\\-\\/\\s]?"
 + "((0?[1-9])|([1-2][0-9])|(30)))|(0?2[\\-\\/\\s]?((0?[1-9])|(1[0-9])|(2[0-8]))))))";
 if ((date != null)) {
 Pattern pattern = Pattern.compile(datePattern1);
 Matcher match = pattern.matcher(date);
 if (match.matches()) {
 pattern = Pattern.compile(datePattern2);
 match = pattern.matcher(date);
 boolean matches = match.matches();
 if(Boolean.FALSE.equals(matches)){
 return false;
 }
 }else {
 return false;
 }
 }
 return true;
}