JDK 8 code review request for 7140820 Add covariant overrides to Collections clone methods
Rémi Forax
forax at univ-mlv.fr
Mon Jan 30 06:52:36 UTC 2012
On 01/30/2012 04:58 AM, Joe Darcy wrote:
> Hello,
>
> As an indirect outgrowth of warnings cleanup day, various categories
> of warnings can be eliminated by in the use of Cloneable types by
> overriding the
>
> Object clone()
>
> method inherited from java.lang.Object with a covariant override such as
>
> MyType clone()
>
> Please review my changes for
>
> 7140820 Add covariant overrides to Collections clone methods
> http://cr.openjdk.java.net/~darcy/7140820.0/
>
> which add such covariant override clone methods to collections and a
> few other classes in java.util. Doing a full JDK build with these
> changes, I've also made alterations to other classes to remove now
> superfuous casts (casts which are a javac lint warning!) and some
> unneeded @SuppressWarnings annotations. I also cleaned up a few
> rawtypes warnings while in editing files in java.util.
>
> (Note that the old specListeners method in EventRequestSpecList.java
> was much buggy; it cast an ArrayList from runtime.specListeners to a
> Vector.)
>
> Thanks,
>
> -Joe
WTF !
while it's maybe a binary compatible change, I haven't take a look to
all modified classes to be sure
it's not a source compatible change.
People had created class that inherits from ArrayList and override clone,
while it's not a good practice, there is a *lot* of code from pre-1.5
days that does exactly that,
this change will simply break all those codes.
Rémi
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