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@ -37,6 +37,42 @@ public class DateUtilities {
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return date.getTime();
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}
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/**
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* Add the specified amount of months to the given time.<br/>
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* The day of month will stay the same.<br/>
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*
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* @param time the base-time (in milliseconds) to which the amount of months is added
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* @param interval the amount of months to be added
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* @return the calculated time in milliseconds
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*/
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public static final long addCalendarMonthsToUnixtime(long time, int interval) {
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long result = 0;
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Date date = new Date(time);
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int month = date.getMonth();
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int year = date.getYear();
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int yearsToAdd = interval / 12;
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int monthsToAdd = interval % 12;
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year += yearsToAdd;
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month += monthsToAdd;
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// correct month overflow
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if (month > Calendar.DECEMBER) {
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month = month - Calendar.DECEMBER - 1;
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year++;
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}
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// the day stays the same, thats the point
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// it's especially important for birthday-reminders
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date.setMonth(month);
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date.setYear(year);
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result = date.getTime();
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return result;
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}
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/** Returns unixtime for current time */
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public static final long now() {
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return System.currentTimeMillis();
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Arne Jans
13 years ago