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From "Daniel Dekany (JIRA)" <j...@apache.org>
Subject [jira] [Closed] (FREEMARKER-91) Converting Dec 31 2018 to a string prints Dec 31 2019
Date Mon, 05 Mar 2018 16:23:00 GMT

     [ https://issues.apache.org/jira/browse/FREEMARKER-91?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Daniel Dekany closed FREEMARKER-91.
-----------------------------------
    Resolution: Not A Bug

That's because year is "y" (lower case). "Y" is Week Year. "Y" was added to Java {{SimpleDateFormat}} in
Java 7. I can only praise the geniuses behind this, choosing "Y" for this, instead of any
random letter. See, upper- VS lower-case is already quite inconsistent in those patterns,
but now if you dare to write "Y" by mistake... no error message for you anymore. Instead,
you get a hidden bug in your application that bites near the edge of years. And FreeMarker
just exposes that patterns supported by Java. We should block "Y" somehow.

> Converting Dec 31 2018 to a string prints Dec 31 2019
> -----------------------------------------------------
>
>                 Key: FREEMARKER-91
>                 URL: https://issues.apache.org/jira/browse/FREEMARKER-91
>             Project: Apache Freemarker
>          Issue Type: Bug
>            Reporter: Eran Belinsky
>            Priority: Minor
>
> I've encountered the following (verified on try.freemarker.org), after a report from
one of my users (we render the templates for them):
> Template:
> ${timestamp_ms_2018_12_31_12?number?number_to_date}
> ${timestamp_ms_2018_12_31_12?number?number_to_date?string("MMMM dd, YYYY")}
> ${timestamp_ms_2018_12_29_12?number?number_to_date?string("MMMM dd, YYYY")}
> Data model:
> timestamp_ms_2018_12_31_12 = "1546243200000"
> timestamp_ms_2018_12_29_12 = "1546070400000"
> Result:
> Dec 31, 2018
> December 31, 2019
> December 29, 2018
> I know that java.util.Date is bad due to no timezone support, but how does the string
conversion get it wrong by a whole year?
>  
>  



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