RFR: Let jar tool print timestamps in default locale date and time in format

[Omair Majid]

* Jacob Wisor <gitne at gmx.de> [2015-03-09 13:14]:
> Hello Omair,
> 
> Am 09.03.2015 um 15:19 schrieb Omair Majid:
> >* Jacob Wisor <gitne at gmx.de> [2015-03-06 09:49]:
> >>Anyways, please review this patch.
> >
> >Hi Jacob,
> >
> >Please familiarize yourself with how fixes are added to older versions
> >of OpenJDK:
> >http://openjdk.java.net/projects/jdk8u/groundrules.html
> >
> >In other words, please rebase this patch against jdk9 and get it
> >committed there first. Then you can start looking into backports.
> 
> Okay, thank you for the heads up. I will do take a look into committing to
> JDK 9 first. However, I was hesitant to do so because it has an utterly
> different structure than previous JDKs and it looks like a lot of work to
> get through it.

Yeah, the paths have changed. But mostly, it's just the addition of the
module prefix in the path.

So 
jdk/src/share/classes/sun/tools/jar/Main.java
becomes
jdk/src/jdk.dev/share/classes/sun/tools/jar/Main.java

There's some tools to help with that:
http://cr.openjdk.java.net/~chegar/docs/portingScript.html

> If parsing is /really/ an issue then the
> jar tool should have an additional option to print date and time in ISO
> format and/or people should migrate their reliant software to explicitly set
> the locale they are most comfortable with parsing.

I think the concern is compatibility change within a release. If I am
using a version of jdk8u and my (broken) scripts parses the output of
the jar tool, fixing this will break my script. Is breaking existing
users' setups worth fixing this?

Perhaps it will be a more acceptable change for a new jdk version?

Thanks,
Omair

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