Java Utililty Methods SQL Date Month

Calendar calendar = Calendar.getInstance();
calendar.setTime(date);
calendar.set(Calendar.MONDAY, calendar.get(Calendar.MONTH) + 1);
calendar.set(Calendar.HOUR_OF_DAY, 23);
calendar.set(Calendar.MINUTE, 59);
calendar.set(Calendar.SECOND, 59);
if (isFormatDate)
    return formatDate(getFirstDayOfMonth(calendar.getTime()));
...

Calendar cale = Calendar.getInstance();
cale.setTime(date);
cale.set(Calendar.DAY_OF_MONTH, cale.getActualMinimum(Calendar.DAY_OF_MONTH));
java.sql.Date newDate = new java.sql.Date(cale.getTimeInMillis());
cale = null;
return Timestamp.valueOf(newDate.toString() + " 00:00:00.000");

return initCalendar(date).get(Calendar.MONTH) + 1;

Calendar cal = Calendar.getInstance();
cal.setTime(date);
return cal.get(Calendar.MONTH) + 1;

int nYear = 0;
int nMonth = 0;
int nDay = 0;
int nMonthAmount = 0;
Calendar cldStart = Calendar.getInstance();
Calendar cldEnd = Calendar.getInstance();
cldStart.setTime(_startDate);
cldEnd.setTime(_endDate);
...

Calendar calendar = Calendar.getInstance();
calendar.setTime(date);
calendar.add(Calendar.MONTH, -1);
Date date2 = new Date(calendar.getTimeInMillis());
return date2;

Calendar cal = Calendar.getInstance();
cal.setTime(myDate);
cal.add(Calendar.MONTH, month);
java.util.Date newDate = cal.getTime();
return new java.sql.Date(newDate.getTime());

Calendar cale = Calendar.getInstance();
cale.setTime(date);
int today = cale.get(Calendar.DAY_OF_MONTH);
int days = cale.getActualMaximum(Calendar.DAY_OF_MONTH);
long millis = cale.getTimeInMillis();
java.sql.Date dates[] = new java.sql.Date[days];
for (int i = 1; i <= days; i++) {
    long sub = (today - i) * 24 * 60 * 60 * 1000L;
...

return getMonthFromYMD(toString(ymd));

return getMonthStart(stamp, 0);