获取两个日期之间的星期数。 [英] Get the number of weeks between two Dates.

问题描述

我在工程中工作，在Date中有两种类型。我想计算这两个日期之间的星期数。日期可能在不同的年份。有没有什么好的解决方案呢？

我已经试图用其他主题中提出的Joda-time来实现这一点。

这个图书馆很熟悉，但是我试图这样做：

  public static int getNumberOfWeeks（Date f，Date l）{ 
日历c1 = Calendar.getInstance（）; 
日历c2 = Calendar.getInstance（）; 
 c1.setTime（f）; 
 c2.setTime（l）; 
 DateTime start = new DateTime（c1.YEAR，c1.MONTH，c1.DAY_OF_MONTH，0，0，0，0）; 
 DateTime end = new DateTime（c2.YEAR，c2.MONTH，c2.DAY_OF_MONTH，0，0，0，0）; 
间隔间隔=新间隔（开始，结束）; 
期间p = interval.toPeriod（）; 
 return p.getWeeks（）; 
} 
  

但这是完全错误的...任何建议？

解决方案

joda时间：

  DateTime dateTime1 = new DateTime（date1）; 
 DateTime dateTime2 = new DateTime（date2）; 
 
 int weeks = Weeks.weeksBetween（dateTime1，dateTime2）.getWeeks（）; 
  

Im working in a project and I got two types in Date. I want to calculate the number of weeks between these two dates. The dates can be in diffrent years. Is there any good solution for this?

I have tried to implemenent this with Joda-time which was suggested in other topics..

Im not familar with this library, but I tried to do something like this:

public static int getNumberOfWeeks(Date f, Date l){
    Calendar c1 = Calendar.getInstance();
    Calendar c2 = Calendar.getInstance();
    c1.setTime(f);
    c2.setTime(l);
    DateTime start = new DateTime(c1.YEAR, c1.MONTH, c1.DAY_OF_MONTH, 0, 0, 0, 0);
    DateTime end   = new DateTime(c2.YEAR, c2.MONTH, c2.DAY_OF_MONTH, 0, 0, 0, 0);
    Interval interval = new Interval(start, end);
    Period p = interval.toPeriod();
    return p.getWeeks();
}

But this is completely wrong... any suggestions ?

解决方案

It is pretty easy with joda time:

DateTime dateTime1 = new DateTime(date1);
DateTime dateTime2 = new DateTime(date2);

int weeks = Weeks.weeksBetween(dateTime1, dateTime2).getWeeks();

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