Java XMLGregorianCalendar 日期比较
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XMLGregorianCalendar date comparison
提问by Ajay
How do i compare 2 instances of XMLGregorianCalendar to find which one is greater? One of the date variables have a value
我如何比较 XMLGregorianCalendar 的 2 个实例以找出哪个更大？日期变量之一具有值
date1 = 2009-02-23T05:54:17+05:30
and the other,
和另一个，
date2 = 2009-02-23T05:54:17.000
采纳答案by skaffman
You could convert them both to GregorianCalendarand compare those (Calendaris Comparable). The semantics compareTo() method of Calendar is explicitly defined, and should work independent of the timezone:
您可以将它们都转换为GregorianCalendar并比较那些 ( Calendaris Comparable)。Calendar 的语义 compareTo() 方法是明确定义的，并且应该独立于时区工作：
Compares the time values (millisecond offsets from the Epoch) represented by two Calendar objects.
比较由两个 Calendar 对象表示的时间值（距 Epoch 的毫秒偏移量）。
So try this:
所以试试这个：
XMLGregorianCalendar date1 = ...
XMLGregorianCalendar date2 = ...
int result = date1.toGregorianCalendar().compareTo(date2.toGregorianCalendar());
If resultis positive, then date1is "later" than date2
如果result是正数，则date1是“晚于”date2
The compare()method on XMLGregorianCalendaritself does something rather peculiar, and doesn't look very useful to me.
该compare()方法XMLGregorianCalendar本身做了一些相当奇特的事情，对我来说看起来不是很有用。
