DO NOT REPLY [Bug 26659] New: - [lang] add method to DateUtils to get the distance between 2 dates

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http://nagoya.apache.org/bugzilla/show_bug.cgi?id=26659

[lang] add method to DateUtils to get the distance between 2 dates

           Summary: [lang] add method to DateUtils to get the distance
                    between 2 dates
           Product: Commons
           Version: unspecified
          Platform: Other
        OS/Version: Other
            Status: NEW
          Severity: Enhancement
          Priority: Other
         Component: Lang
        AssignedTo: commons-dev@jakarta.apache.org
        ReportedBy: Maarten.Coene@qmedit.com


Hi,

I would like to see a method added to DateUtils that calculates the distance for
a specific field between 2 dates. What do I mean by this:

for instance:
* the distance between 01 Jan 2003 and 01 Feb 2003 is: 0 years, 1 month, 31
days, 744 hours, ...
* the distance between 01 Jan 2003 and 01 Feb 2004 is: 1 years, 13 month, ...
* the distance between 01 Jan 2004 and 01 Jan 2005 is: 1 year, 12 month, 366
days (leap year!), ...

The proposed methods are:
public static long distance(Date date1, Date date2, int dateField);
public static long distance(Calendar c1, Calendar c2, int dateField);

attached are patches for DateUtils and DateUtilsTest.

Maarten

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