Java Utililty Methods Date String Format

List of utility methods to do Date String Format

  1. HOME
  2. Java
  3. D
  4. Date String Format

Description

The list of methods to do Date String Format are organized into topic(s).

Method

StringformatDateLog(String dateStr)
Formats the date string to the string that begins with "[" and ends with "]". 
StringBuffer sb = new StringBuffer("");
sb.append("[");
sb.append(dateStr);
sb.append("]");
return sb.toString();
StringformatDateString(String dateString)
Change date format from MM/dd/YYYY to yyyy/MM/dd 
String arrStr[] = dateString.split(DEFAULT_DELIMETER);
if (arrStr[1].length() == 1)
    arrStr[1] = String.format("0%s", arrStr[1]);
if (arrStr[0].length() == 1)
    arrStr[0] = String.format("0%s", arrStr[0]);
return String.format("%s-%s-%s", arrStr[2], arrStr[0], arrStr[1]);
StringFormatDateString(String dateString)
Format Date String 
String[] dateSplit = null;
String result;
if (dateString.contains("-")) {
    dateSplit = dateString.split("-");
} else if (dateString.contains("/")) {
    dateSplit = dateString.split("/");
try {
...
StringformatDateToParse(String date, String errorMessage)
format Date To Parse 
if (!date.contains("Z")) {
    int lastColonIndex = date.lastIndexOf(":");
    if (lastColonIndex < 0) {
        throw new IllegalArgumentException(errorMessage + date);
    date = date.substring(0, lastColonIndex) + date.substring(lastColonIndex + 1, date.length());
} else {
    date = date.replace("Z", "+0000");
...
StringformatDay(String date)
format Day 
String result = null;
String[] tmp = date.split("\\-");
String year = tmp[0];
String month = tmp[1];
String day = tmp[2];
if (Integer.parseInt(month) < 10) {
    month = "0" + month;
if (Integer.parseInt(day) < 10) {
    day = "0" + day;
result = year + "-" + month + "-" + day;
return result;
Stringformate8Date(String str)
formate Date 
if (str.length() == 8) {
    return str.substring(0, 4) + "-" + str.substring(4, 6) + "-" + str.substring(6, 8);
return str;
StringformatIso8601ToSimpleDate(String iso8601)
format Iso To Simple Date 
String date = iso8601.split("T")[0];
String[] parts = date.split("-");
StringBuilder sb = new StringBuilder();
sb.append(parts[2]).append(DATE_SEPARATOR).append(parts[1]).append(DATE_SEPARATOR).append(parts[0]);
return sb.toString();
StringformatISODate(String date)
Method to format an inputed date to the iso format of either yyyy, yyyy-mm, or yyyy-mm-dd 
if (date.matches("\\d{1,4}")) { 
    return padYear(date);
} else if (date.matches("\\d{1,4}-\\d{1,2}")) { 
    String[] sa = date.split("-");
    return padYear(sa[0]) + "-" + padMonthOrDay(sa[1]);
} else if (date.matches("\\d{1,4}-\\d{1,2}-\\d{1,2}")) {
    String[] sa = date.split("-");
    return padYear(sa[0]) + "-" + padMonthOrDay(sa[1]) + "-" + padMonthOrDay(sa[2]);
...
StringformatMinDateForShowWith_(String str)
format Min Date For Show Wit_ 
String res = "";
try {
    if (str.length() >= 4) {
        res += str.substring(0, 4);
    if (str.length() >= 6) {
        res += "-" + Integer.parseInt(str.substring(4, 6));
    if (str.length() >= 8) {
        res += "-" + Integer.parseInt(str.substring(6, 8));
} catch (Exception e) {
    e.printStackTrace();
} finally {
return res;
StringformatQuery(String queryDate)
format Query 
String str[] = queryDate.split("-");
String year = str[0];
String month = str[1];
String day = str[2];
return year + month + day;