Java Utililty Methods Month Convert

List of utility methods to do Month Convert

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Description

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

Method

intmonthNumber(String s)
returns 1,2,...,12 for the English month name. 
if (s.length() < 3)
    throw new ParseException("need at least three letters", 0);
s = s.substring(0, 3);
for (int i = 0; i < 12; i++) {
    if (s.equalsIgnoreCase(mons[i]))
        return i + 1;
throw new ParseException("Unable to parse month", 0);
...
intmonthOfDate(Date s)
month Of Date 
String d = FORMAT_YYYY_MM_DD.format(s);
return Integer.parseInt(d.substring(5, 7));
intmonthsBetween(String from, String to)
months Between method 
return monthsBetween(from, to, "yyyyMMdd");
intmonthStringToInt(String month)
Converts a month title (like "December") into its equivalent number (12). 
DateFormatSymbols df = new DateFormatSymbols();
int i = 0;
for (String mon : df.getMonths()) {
    if (mon.equalsIgnoreCase(month))
        return i + 1;
    i++;
return -1;
...
intnextMonth()
next Month 
String next = format(new Date(), "M");
int nextMonth = Integer.parseInt(next) + 1;
if (nextMonth == 13)
    return 1;
return nextMonth;
DatenextMonth(Date date)
next Month 
Calendar temp = Calendar.getInstance();
temp.setTime(date);
int y = temp.get(Calendar.YEAR);
int m = temp.get(Calendar.MONTH) + 1;
int d = temp.get(Calendar.DAY_OF_MONTH);
String sj1 = "";
if (d >= 1 && d <= 20) {
    d = 21;
...
DatenextMonth(Date date)
next Month 
Calendar c = new GregorianCalendar();
c.setTime(date);
c.add(Calendar.MONTH, 1);
return c.getTime();
DateparseMonth(final String source)
Parse the Date using pattern "yyyy-MM" 
if (source == null || source.trim().length() == 0) {
    return null;
return monthFormat.parse(source);
DatesetMonths(Date date, int amount)
Sets the months field to a date returning a new object. 
return set(date, Calendar.MONTH, amount);