RFR(XS): JDK-8048989 small errors in Collectors examples

[Joe Darcy]

Looks fine Stuart,

-Joe

On 07/01/2014 05:34 PM, Stuart Marks wrote:
> Please review this small patch to fix some errors in the examples in 
> the docs for java.util.stream.Collectors. Thanks to Raoul Urma for 
> pointing these out.
>
> s'marks
>
> # HG changeset patch
> # User smarks
> # Date 1404256293 25200
> #      Tue Jul 01 16:11:33 2014 -0700
> # Node ID 5b6a12d8a26e96052bc1c3ff787e8836fa4d64da
> # Parent  71012e1b8534c481ba42a38e77fca0b90299628d
> 8048989: small errors in Collectors examples
> Reviewed-by: XXX
> Contributed-by: raoul at urma.com
>
> diff -r 71012e1b8534 -r 5b6a12d8a26e 
> src/share/classes/java/util/stream/Collectors.java
> --- a/src/share/classes/java/util/stream/Collectors.java    Mon Jun 16 
> 17:52:21 2014 -0700
> +++ b/src/share/classes/java/util/stream/Collectors.java    Tue Jul 01 
> 16:11:33 2014 -0700
> @@ -729,7 +729,7 @@
>       * person in each city:
>       * <pre>{@code
>       *     Comparator<Person> byHeight = 
> Comparator.comparing(Person::getHeight);
> -     *     Map<City, Person> tallestByCity
> +     *     Map<City, Optional<Person>> tallestByCity
>       *         = people.stream().collect(groupingBy(Person::getCity, 
> reducing(BinaryOperator.maxBy(byHeight))));
>       * }</pre>
>       *
> @@ -784,7 +784,7 @@
>       *     Comparator<String> byLength = 
> Comparator.comparing(String::length);
>       *     Map<City, String> longestLastNameByCity
>       *         = people.stream().collect(groupingBy(Person::getCity,
> -     * reducing(Person::getLastName, BinaryOperator.maxBy(byLength))));
> +     *                                              reducing("", 
> Person::getLastName, BinaryOperator.maxBy(byLength))));
>       * }</pre>
>       *
>       * @param <T> the type of the input elements
>