RFR 8071670: java.util.Optional: please add a way to specify if-else behavior

Daniel Fuchs daniel.fuchs at oracle.com
Thu Feb 12 18:39:45 UTC 2015


The new version looks good Paul!

-- daniel

On 2/12/15 6:50 PM, Paul Sandoz wrote:
> On Feb 12, 2015, at 3:50 PM, Daniel Fuchs <daniel.fuchs at oracle.com> wrote:
>
>> Hi Paul,
>>
>> This looks good - I have noticed one copy/paste error in the javadoc
>> though:
>>
>> OptionalInt.java:
>>
>> looks like the throws clause of ifPresent and ifPresentOrElse have been
>> interverted:
>>
>> 138      * @throws NullPointerException if a value is present and {@code action} is
>> 139      * null, or a value is not present and {@code emptyAction} is null.
>> 140      */
>> 141     public void ifPresent(IntConsumer action) {
>> 142         if (isPresent) {
>> 143             action.accept(value);
>> 144         }
>> 145     }
>> 146
>> 147     /**
>> 148      * If a value is present, perform the given action with the value,
>> 149      * otherwise perform the given empty-based action.
>> 150      *
>> 151      * @param action the action to be performed if a value is present
>> 152      * @param emptyAction the empty-based action to be performed if a value is
>> 153      * not present
>> 154      * @throws NullPointerException if value is present and {@code action} is
>> 155      * null
>> 156      * @since 1.9
>> 157      */
>> 158     public void ifPresentOrElse(IntConsumer action, Runnable emptyAction) {
>>
> Oops. Fixed.
>
>
>> Concerning the test, should there be a test that verifies that NPE
>> is thrown when null is passed - as specified in the javadoc?
>>
> Done.
>
> http://cr.openjdk.java.net/~psandoz/jdk9/JDK-8071670-Optional-ifPresentOrElse/webrev/
>
> Thanks,
> Paul.




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