Java Utililty Methods Date Create

List of utility methods to do Date Create

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Description

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

Method

Dateadd24HtoDate(Date date)
add Hto Date 
Calendar cal = new GregorianCalendar();
cal.setTime(date);
cal.setTimeInMillis(date.getTime());
cal.add(Calendar.DATE, 1);
return new Date(cal.getTimeInMillis());
DateaddTimeToDate(Date date, Date time)
Adds specified time of day to a date. 
String dateAndTime = formatDateNoTime(date) + " " + formatTime(time);
ParsePosition pos = new ParsePosition(0);
Date result = dateFormatter1.parse(dateAndTime, pos);
if ((result != null) && (pos.getIndex() < dateAndTime.length()))
    result = null;
return result;
DatebuildDate(int y, int m, int d)
build Date 
Calendar cal = Calendar.getInstance();
cal.set(Calendar.YEAR, y);
cal.set(Calendar.MONTH, m - 1);
cal.set(Calendar.DAY_OF_MONTH, d);
return cal.getTime();
DatebuildDate(String dateAsString)
build Date 
try {
    return DATE_FORMATTER.parse(dateAsString);
} catch (Exception e) {
    throw new RuntimeException("Failed to parse date - " + dateAsString, e);
SimpleDateFormatbuildDateFormat(final String pattern)
Get a SimpleDateFormat object by given pattern. 
SimpleDateFormat simpleDateFormat = simpleDateFormatCache.get();
if (simpleDateFormat == null) {
    simpleDateFormat = new SimpleDateFormat();
    simpleDateFormatCache.set(simpleDateFormat);
simpleDateFormat.applyPattern(pattern);
return simpleDateFormat;
DatebuildDatetime(Date datePart, Date hourMinutePart)
build Datetime 
String str = formatDate(datePart) + " " + formatHourMinute(hourMinutePart) + ":00.000";
Date result = parseFullDatetime(str);
return result;
DatebuildDateTime(String curDate, String curTime, String meridiem)
Build the date object according to the date and time value from the page. 
Date newDate = null;
if (curDate != null && !"".equals(curDate.trim()) && curTime != null && !"".equals(curTime.trim())) {
    String dateToParse = curDate + " " + curTime + " " + meridiem;
    DateFormat format = DateFormat.getDateTimeInstance(DateFormat.SHORT, DateFormat.SHORT);
    try {
        newDate = format.parse(dateToParse);
    } catch (ParseException paex) {
        newDate = null;
...
StringbuildDateTimeUTC(Calendar cal)
Builds a dateTime value in UTC from a Calendar value. 
SimpleDateFormat f = new SimpleDateFormat("yyyy-MM-dd'T'HH:mm:ss'Z'");
f.setTimeZone(TimeZone.getTimeZone("UTC"));
return f.format(cal.getTime());
DatecastToDate(Object value)
cast To Date 
if (value == null) {
    return null;
if (value instanceof Calendar) {
    return ((Calendar) value).getTime();
if (value instanceof Date) {
    return (Date) value;
...
Calendarcreate(int year, int month, int date, TimeZone timeZone)
create 
Calendar c = Calendar.getInstance(timeZone);
c.set(year, month - 1, date, 0, 0, 0);
c.set(Calendar.MILLISECOND, 0);
return c;