RFR 9: 8138963 : java.lang.Objects new method to default to non-null
Ivan Gerasimov
ivan.gerasimov at oracle.com
Tue Oct 6 13:53:47 UTC 2015
Hi Roger!
I didn't notice the message, so first commented in the Jira.
Would it make sense to also add a variant with the second argument of
type Supplier, so that it can be lazily calculated only if needed?
Something like:
public static <T> T nonNull(T obj, Supplier<T> nullDefaultSupplier) {
return (obj != null) ? obj : nullDefaultSupplier.get();
}
Sincerely yours,
Ivan
On 06.10.2015 16:43, Roger Riggs wrote:
> Java.lang.Objects contains a number of convenience methods to make it
> easier to handle references that are null.
> For example, toString(obj, nullDefault),
>
> A new method is proposed to return the reference or a default value if
> the reference is null.
> static <T> T nonNull(T obj, T nullDefault);
>
> Alternatives to the method name include
> nonNullOrElse ( using the java.util.Optional name pattern) or
> nonNullOrDefault
>
> Please review and comment.
>
> Webrev:
> http://cr.openjdk.java.net/~rriggs/webrev-object-non-null/
>
> Issue:
> https://bugs.openjdk.java.net/browse/JDK-8138963
>
> Thanks, Roger
>
>
More information about the core-libs-dev
mailing list