java – Joda-Time：获得月的第一个/第二个/最后一个星期日

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)

使用Joda-Time实现相同结果的干净而优雅的方法是什么？

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;
}
}