> Please review this PR and [CSR](https://bugs.openjdk.org/browse/JDK-8312197) 
> which updates the javadoc for the constructor of MessageFormat regarding a 
> `null` locale,
> 
> `MessageFormat` when created with a `null` locale may throw a 
> `NullPointerException` either during the object creation, or later when 
> `format()` is called by the `MessageFormat` object (test file has examples of 
> both). This change updates the specification of MessageFormat to make this 
> apparent. The wording is specifically chosen as 'may throw' since whether an 
> NPE is thrown depends on the subformat used by MessageFormat (see test 
> example of construction with null locale and no exception thrown).
> 
> The test for this change was merged with `Bug6481179.java` into 
> `MessageFormatExceptions.java` (As they both test exceptions). In addition, 
> some other exception testing regarding MessageFormat was added.
> 
> Thanks

Justin Lu has updated the pull request incrementally with two additional 
commits since the last revision:

 - Slight wording adjustment
 - Review: Explicitly declare when NPE thrown instead of 'may'

-------------

Changes:
  - all: https://git.openjdk.org/jdk/pull/14911/files
  - new: https://git.openjdk.org/jdk/pull/14911/files/05ac9193..4092e3ad

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=14911&range=01
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=14911&range=00-01

  Stats: 14 lines in 2 files changed: 10 ins; 1 del; 3 mod
  Patch: https://git.openjdk.org/jdk/pull/14911.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/14911/head:pull/14911

PR: https://git.openjdk.org/jdk/pull/14911

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