Integrated: 8362572: Delete the usage of "sun.java2d.reftype" from the sun.java2d.Disposer

[Sergey Bylokhov]

On Fri, 18 Jul 2025 19:07:19 GMT, Sergey Bylokhov <serb at openjdk.org> wrote:

> Just a code cleanup to reduce the amount of code we need to care about, test, and support.
> 
> The class sun.java2d.Disposer can use either weak or phantom references. For many years it has used phantom references by default.
> 
> One reason why weak references were supported is because phantom references keep a strong reference to the object until the reference is added to the reference queue and cleared. This behavior changed after the fix for [JDK-8071507](https://bugs.openjdk.org/browse/JDK-8071507). Now both weak and phantom references behave the same way when it comes to clearing the reference to the object.

This pull request has now been integrated.

Changeset: 7d7d308d
Author:    Sergey Bylokhov <serb at openjdk.org>
URL:       https://git.openjdk.org/jdk/commit/7d7d308d9ab6f06ebdab0f5967a5bfc007d4217f
Stats:     27 lines in 1 file changed: 2 ins; 21 del; 4 mod

8362572: Delete the usage of "sun.java2d.reftype" from the sun.java2d.Disposer

Reviewed-by: prr, aivanov

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PR: https://git.openjdk.org/jdk/pull/26394