JavaCalendar.set没有给出正确的结果-JavaCalendar.setnotgivingcorrectresult

I'll look into exactly what's going on, but the general rule of thumb is: don't use java.util.{Date,Calendar}. Use Joda Time instead... it's so much cleaner...

我会仔细研究发生了什么,但一般的经验法则是:不要使用java.util。{Date,Calendar}。使用Joda Time代替......它更清洁......

EDIT: I can't reproduce your issue at the moment. I'd still recommend using Joda, but if you could post a short but complete program to demonstrate the problem, we may be able to work out what's going wrong.

编辑:我目前无法重现您的问题。我仍然建议使用Joda,但如果您可以发布一个简短但完整的程序来演示问题,我们可能会弄清楚出了什么问题。

EDIT: Based on another comment, I wonder whether your formatter is wrong... are you really using "dd/mm/yyyy" rather than "dd/MM/yyyy"? "mm" means minutes, not months.

编辑:基于另一个评论,我想知道你的格式化程序是否错误...你真的使用“dd / mm / yyyy”而不是“dd / MM / yyyy”吗? “mm”表示分钟,而不是月份。

We ran into this and the result was that the value you set doesn't get used until you actually try to 'get' the value from Calendar. We were puzzled because using the debugger the value never seemed to get set, but when you actually 'get' it, it works.

我们碰到了这个结果,结果是你设置的值在你真正尝试从日历中“获取”值之前不会被使用。我们感到困惑,因为使用调试器的值似乎永远不会被设置,但是当你真正“得到”它时,它就可以工作了。

http://download.oracle.com/javase/1.5.0/docs/api/java/util/Calendar.html

Getting and Setting Calendar Field Values

获取和设置日历字段值

The calendar field values can be set by calling the set methods. Any field values set in a Calendar will not be interpreted until it needs to calculate its time value (milliseconds from the Epoch) or values of the calendar fields. Calling the get, getTimeInMillis, getTime, add and roll involves such calculation.

可以通过调用set方法来设置日历字段值。在需要计算其时间值(距Epoch的毫秒数)或日历字段的值之前,不会解释日历中设置的任何字段值。调用get,getTimeInMillis,getTime,add和roll涉及这样的计算。

Perhaps you wanted to use Calendar.DAY_OF_MONTH

也许你想使用Calendar.DAY_OF_MONTH