Not much. See:

http://java.sun.com/javase/6/webnotes/compatibility.html

Class file version bump seems mostly related to a new verification scheme.


On Tue, Sep 22, 2009 at 4:58 PM, Patrick Hunt (JIRA) <j...@apache.org>wrote:

>
>    [
> https://issues.apache.org/jira/browse/ZOOKEEPER-532?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12758433#action_12758433]
>
> Patrick Hunt commented on ZOOKEEPER-532:
> ----------------------------------------
>
> FYI we dropped official 1.5 support in 3.1 with ZOOKEEPER-210
>
> Also, IIRC there were issues running the ZK JMX code with a 1.5 vm.
>
> I'm not adverse to targeting 1.5, but what's the impact of this change for
> everyone using java 6? (I realize it works, but what's the impact of
> targeting 1.5 vs 1.6 on 1.6).
>
>
> > java compiler should be target Java 1.5
> > ---------------------------------------
> >
> >                 Key: ZOOKEEPER-532
> >                 URL: https://issues.apache.org/jira/browse/ZOOKEEPER-532
> >             Project: Zookeeper
> >          Issue Type: Bug
> >    Affects Versions: 3.2.1
> >            Reporter: Hiram Chirino
> >             Fix For: 3.3.0
> >
> >         Attachments: ZOOKEEPER-532.patch
> >
> >
> > The jars released in 3.2.1 will not run on Java 1.5.  With a small build
> change, it is possible to generate jars that will run on Java 1.5.
>
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-- 
Regards,
Hiram

Blog: http://hiramchirino.com

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