Java Utililty Methods Day Of Year

List of utility methods to do Day Of Year

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Description

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

Method

DategetLastYearOfToday()
get Last Year Of Today 
return rollYear(new Date(), -1);
intgetMaxDayByYearMonth(String ym)
get Max Day By Year Month 
int day = 0;
try {
    SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM");
    Calendar calendar = new GregorianCalendar();
    Date date = sdf.parse(ym);
    calendar.setTime(date);
    day = calendar.getActualMaximum(Calendar.DAY_OF_MONTH);
} catch (ParseException e) {
...
StringgetMaxDayOfYearMonth(String date)
get Max Day Of Year Month 
SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM");
try {
    Date d = sdf.parse(date);
    Calendar calendar = Calendar.getInstance();
    calendar.setTime(d);
    int lastDayNum = calendar.getActualMaximum(Calendar.DAY_OF_MONTH);
    date = date + "-" + lastDayNum;
} catch (ParseException e) {
...
intgetMaxWeekNumOfYear(int year)
get Max Week Num Of Year 
Calendar c = new GregorianCalendar();
c.set(year, Calendar.DECEMBER, 31, 23, 59, 59);
return getWeekOfYear(c.getTime());