RFR: 8267670: Update java.io, java.math, and java.text to use switch expressions [v2]

[Patrick Concannon]

On Tue, 25 May 2021 12:43:00 GMT, Naoto Sato <naoto at openjdk.org> wrote:

>> Patrick Concannon has updated the pull request with a new target base due to a merge or a rebase. The incremental webrev excludes the unrelated changes brought in by the merge/rebase. The pull request contains three additional commits since the last revision:
>> 
>>  - 8267670: Updated code to use yield
>>  - Merge remote-tracking branch 'origin/master' into JDK-8267670
>>  - 8267670: Update java.io, java.math, and java.text to use switch expressions
>
> src/java.base/share/classes/java/text/BreakIterator.java line 569:
> 
>> 567:             case SENTENCE_INDEX  -> breakIteratorProvider.getSentenceInstance(locale);
>> 568:             default              -> null;
>> 569:         };
> 
> No need to use the local variable `iterator` here. Simply return with the switch expression.

Hi Naoto, thanks for spotting this. Code updated as suggested. See adc8af4

> src/java.base/share/classes/java/text/NumberFormat.java line 982:
> 
>> 980:             case COMPACTSTYLE  -> provider.getCompactNumberInstance(locale, formatStyle);
>> 981:             default            -> null;
>> 982:         };
> 
> Same as `BreakIterator`. No need for `numberFormat`.

Code updated as suggested. See adc8af4

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PR: https://git.openjdk.java.net/jdk/pull/4182