JDK 14 RFR of JDK-8232230: Suppress warnings on non-serializable non-transient instance fields in java.util.concurrent

[Martin Buchholz]

On Wed, Oct 16, 2019 at 3:56 PM Joe Darcy <joe.darcy at oracle.com> wrote:

>
> > The comments for Condition declarations are still not consistent -
> > every one is known to be Serializable, but they cannot be declared
> > Condition & Serializable because Java does not have first-class
> > support for intersection types.
>
> FWIW, this code compiles in javac
>
>      public interface SerializableCondition extends Condition,
> Serializable {
>          public static <C extends Condition & Serializable>
>                                   SerializableCondition transform(C
> condition) {
>              return condition;
>          }
>      }
>
> and objects of existing types like
> AbstractQueuedLongSynchronizer.ConditionObject seem to get "converted"
> as desired.
>

Here's another point of view of the same problem:
 https://blog.codefx.org/java/intersection-types-var/