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

StringminusDate(int day, int type)
return Minus day to date strings with user defined format. 
GregorianCalendar cal = new GregorianCalendar();
SimpleDateFormat formatter = new SimpleDateFormat("yyyyMMdd");
cal.add(Calendar.DAY_OF_MONTH, -1);
cal.add(type, -day);
return formatter.format(cal.getTime());
DatenextDay(Date date)
next Day 
Date newDate = (Date) date.clone();
long time = newDate.getTime() / 1000L + 86400L;
newDate.setTime(time * 1000L);
SimpleDateFormat format = new SimpleDateFormat("yyyy-MM-dd");
try {
    newDate = format.parse(format.format(newDate));
} catch (Exception ex) {
    System.out.println(ex.getMessage());
...
StringnowDayString()
now Day String 
return dayDateFormat.format(dateTimeConvert(0));
DateparseBirthday(String r)
parse Birthday 
SimpleDateFormat df = new SimpleDateFormat("y-M-d");
return df.parse(r);
CalendarparseCalendarDayFormat(String strDate)
parse Calendar Day Format 
String pattern = "yyyy-MM-dd";
return parseCalendarFormat(strDate, pattern);
StringparseDay(Date value, String defaultValue)
Parses the day field from the given date. 
if (value == null) {
    return defaultValue;
return new SimpleDateFormat("d").format(value);
DateparseDay(final String day)
Parses the given day and returns the corresponding date. 
Date result = null;
if (day != null && !day.isEmpty()) {
    try {
        final SimpleDateFormat dateTimeFormat = new SimpleDateFormat(DAY);
        dateTimeFormat.setTimeZone(TimeZone.getDefault());
        result = dateTimeFormat.parse(day);
    } catch (final ParseException e) {
return result;
StringparseDay(int time)
parse Day 
return yyyyMMdd.format(new java.util.Date(time * 1000L));
StringparseDay(String str, String type)
parse Day 
if (type.equals("single")) {
    return "single";
if (type.equals("day")) {
    return str;
SimpleDateFormat fmt = new SimpleDateFormat("yyyyMMdd");
Date d = fmt.parse(str);
...
StringparseDayTime(long ts)
parse Day Time 
return dayFormat.format(new Date(ts));