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From "Knut Anders Hatlen (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (DERBY-5840) Clean up compiler warnings introduced by using Java 5 language features
Date Tue, 03 Jul 2012 21:52:36 GMT

    [ https://issues.apache.org/jira/browse/DERBY-5840?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13406088#comment-13406088
] 

Knut Anders Hatlen commented on DERBY-5840:
-------------------------------------------

Thanks for cleaning this up, Rick. Looks like a good first step on the way to making use of
Java 5 language features.

I saw similar warnings a while ago when I looked into changing the source level of the client
code to 1.5 (with the ultimate goal of being able to push the java.sql.Wrapper.unwrap() overrides
to the base implementation classes, which would allow us to simplify the class hierarchy).
What I noticed, though, was that changing the source level also made the compiler emit lots
of deprecation warnings, primarily for deprecated methods in java.util.Date. Those methods
were also deprecated in Java 1.4, so it wasn't obvious to me why changing the source level
would make the warnings show up.
                
> Clean up compiler warnings introduced by using Java 5 language features
> -----------------------------------------------------------------------
>
>                 Key: DERBY-5840
>                 URL: https://issues.apache.org/jira/browse/DERBY-5840
>             Project: Derby
>          Issue Type: Improvement
>          Components: Miscellaneous
>    Affects Versions: 10.10.0.0
>            Reporter: Rick Hillegas
>         Attachments: derby-5840-01-aa-compatibilityTests.diff
>
>
> Using Java 5 language features forces us to compile code at level 5 or higher. At this
level, the compiler raises warnings not seen at lower levels. This issue is a place to discuss
and attach cleanup to eliminate these warnings.

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