Java Utililty Methods Date Value Check

List of utility methods to do Date Value Check

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Description

The list of methods to do Date Value Check are organized into topic(s).

Method

booleanisDate(String dttm, String format)
is Date 
if (dttm == null || dttm.isEmpty() || format == null || format.isEmpty()) {
    return false;
if (format.replaceAll("'.+?'", "").indexOf("y") < 0) {
    format += "/yyyy";
    DateFormat formatter = new SimpleDateFormat("/yyyy");
    dttm += formatter.format(new Date());
DateFormat formatter = new SimpleDateFormat(format);
formatter.setLenient(false);
ParsePosition pos = new ParsePosition(0);
Date date = formatter.parse(dttm, pos);
if (date == null || pos.getErrorIndex() > 0) {
    return false;
if (pos.getIndex() != dttm.length()) {
    return false;
if (formatter.getCalendar().get(Calendar.YEAR) > 9999) {
    return false;
return true;
booleanisDate(String input)
is date 
try {
    SimpleDateFormat sdf = new SimpleDateFormat(DATE_FORMAT);
    Date d = sdf.parse(input);
    return true;
} catch (ParseException ex) {
    return false;
booleanisDate(String input)
is Date 
if (input == null) {
    return false;
try {
    ymdOrYmdhms2Date(input);
} catch (ParseException e) {
    return false;
return true;
booleanisDate(String pattern, String text)
is Date 
SimpleDateFormat sdf = getDateFormat(pattern);
try {
    sdf.parse(text);
    return true;
} catch (ParseException e) {
    return false;
booleanisDate(String s)
is Date 
if (s != null) {
    if (s.matches("^\\d{4}([/.-])\\d{2}\\1\\d{2}$")) {
        SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd");
        sdf.setLenient(false);
        return sdf.parse(s.replaceAll("[/.]", "-"), new ParsePosition(0)) != null;
    } else if (s.matches("^\\d{2}([/.-])\\d{2}\\1\\d{4}$")) {
        SimpleDateFormat sdf = new SimpleDateFormat("dd-MM-yyyy");
        sdf.setLenient(false);
...
booleanisDate(String str)
is Date 
java.text.DateFormat sdf = new SimpleDateFormat("yyyyMMdd");
try {
    sdf.setLenient(false);
    sdf.parse(str);
} catch (ParseException e) {
    return false;
return true;
...
booleanisDate(String str)
is Date 
boolean isDate = false;
if (str == null)
    return isDate;
str = str.replaceAll("[/-]", "");
DateFormat df = new SimpleDateFormat(DATE_FORMAT_A);
try {
    df.parse(str);
    isDate = true;
...
booleanIsDate(String str)
Is Date 
return IsDate("yy-mm-dd");
booleanisDate(String str, String format)
is Date 
if (hasLength(str)) {
    SimpleDateFormat formatter = new SimpleDateFormat(format);
    formatter.setLenient(false);
    try {
        formatter.format(formatter.parse(str));
    } catch (Exception e) {
        return false;
    return true;
return false;
booleanisDate(String str, String pattern)
is Date 
if (str == null) {
    return false;
if (pattern == null) {
    pattern = "YYYYMMDD";
SimpleDateFormat sdf = new SimpleDateFormat(pattern);
try {
...