Java Utililty Methods Day of

List of utility methods to do Day of

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Description

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

Method

DategetFirstDayOfQuarter(Date date)
get First Day Of Quarter 
Calendar calendar = Calendar.getInstance();
calendar.setTime(date);
return getFirstDayOfQuarter(calendar.get(Calendar.YEAR), getQuarterOfYear(date));
DategetFirstOfDay(Date date)
get First Of Day 
String dateString = new SimpleDateFormat(EARER_IN_THE_DAY).format(date);
try {
    return new SimpleDateFormat(LONG_DATE_FORMAT_STR).parse(dateString);
} catch (ParseException e) {
    return null;
DategetFirstTimeInDay(Date day)
get First Time In Day 
Calendar date = Calendar.getInstance();
date.setTime(day);
date.set(Calendar.HOUR_OF_DAY, 0);
date.set(Calendar.MINUTE, 0);
date.set(Calendar.SECOND, 0);
date.set(Calendar.MILLISECOND, 0);
return date.getTime();
StringgetFormattedNowDatePlusDays(int days, String dateFormat)
get Formatted Now Date Plus Days 
Date nowDate = getNowDate();
Date futureDate = addDaysToDate(nowDate, days);
return dateToString(futureDate, dateFormat);
intgetFullAge(Date birthday)
get Full Age 
if (birthday == null) {
    return 0;
DateFormat df = new SimpleDateFormat("yyyyMMdd");
int start = Integer.parseInt(df.format(birthday));
int end = Integer.parseInt(df.format(new Date()));
int fullAge = (end - start) / 10000;
return fullAge;
...
DategetIncrementDaysSecond(String strDate, int sec)
get Increment Days Second 
SimpleDateFormat sdf = null;
Calendar calendar = new GregorianCalendar();
Date date = null;
int year = 0;
int month = 0;
int day = 0;
int hour = 0;
int minute = 0;
...
StringgetInsertDayDate(int days)
get Insert Day Date 
Calendar day = Calendar.getInstance();
day.add(Calendar.DATE, -days);
SimpleDateFormat simpleDateFormat = new SimpleDateFormat("yyyy-MM-dd");
return simpleDateFormat.format(day.getTime());
StringgetIntervalDate(String date, int intervalDays)
get Interval Date 
Calendar cal = Calendar.getInstance();
int year = Integer.parseInt(String.valueOf(date).substring(0, 4));
int month = Integer.parseInt(String.valueOf(date).substring(4, 6));
int day = Integer.parseInt(String.valueOf(date).substring(6, 8));
cal.set(Calendar.YEAR, year);
cal.set(Calendar.MONTH, month - 1);
cal.set(Calendar.DAY_OF_MONTH, day);
cal.add(Calendar.DATE, intervalDays);
...
intgetIntervalDays(Date fDate, Date oDate)
get Interval Days 
String fDate1 = toString(fDate, "yyyyMMdd");
String oDate1 = toString(oDate, "yyyyMMdd");
java.text.SimpleDateFormat df = new java.text.SimpleDateFormat("yyyyMMdd");
java.util.Date cDate = df.parse(fDate1);
java.util.Date dDate = df.parse(oDate1);
return (int) ((cDate.getTime() - dDate.getTime()) / (24 * 60 * 60 * 1000));
longgetIntevalDays(String startDate, String endDate)
get Inteval Days 
try {
    return getIntevalDays(parse(startDate, YYYY_MM_DD), parse(endDate, YYYY_MM_DD));
} catch (Exception ee) {
    return 0l;