找出java.util.Date和Joda-Time DateTime之间的天数差异？

Question

是否有可能找到java.util.Date和Joda-Time DateTime之间的差异（最好以天数表示）？

class ReminderInterval{
    //it will return a last login date(java.util.Date)
    Date lastDate=Obj.getAccepted();

    //it is Joda-Time type
    DateTime currentDate=new DateTime();
}

Answer 1

只需将Date转换为DateTime，然后使用Days#daysBetween()即可。 DateTime有constructor花费时间以毫秒为单位，而Date有getter返回exaclty。

DateTime lastDate = new DateTime(Obj.getAccepted().getTime());
DateTime currentDate = new DateTime();
int days = Days.daysBetween(lastDate, currentDate).getDays();