在普通的
Java中,我有这个代码来获取本月的最后一个星期日.
Calendar getNthOfMonth(int n,int day_of_week,int month,int year) {
Calendar compareDate = Date(1,month,year);
compareDate.set(DAY_OF_WEEK,day_of_week);
compareDate.set(DAY_OF_WEEK_IN_MONTH,n);
return compareDate;
}
// Usage
Calendar lastSundayOfNovember = getNthOfMonth(-1,SUNDAY,NOVEMBER,2012)
解决方法
public class Time {
public static void main(String[] args) {
System.out.println(getNthOfMonth(DateTimeConstants.SUNDAY,DateTimeConstants.SEP,2012));
}
public static LocalDate getNthOfMonth(int day_of_week,int year) {
LocalDate date = new LocalDate(year,1).dayOfMonth()
.withMaximumValue()
.dayOfWeek()
.setCopy(day_of_week);
if(date.getMonthOfYear() != month) {
return date.dayOfWeek().addToCopy(-7);
}
return date;
}
}
