> Please review this PR which updates the specification of 
> `ZipOutputStream.setComment(String)` to match the long-standing behavior of 
> throwing `IllegalArgumentException` when a comment contains characters which 
> are unmappable using the `Charset` passed in the constructor.
> 
> A new tests is added to reproduce calling setComment with unmappable 
> characters and verify that it throws IAE.
> 
> PR work revealed that setComment does not explicitly specify behavior if the 
> comment string is null or an empty string. The method spectifications of 
> `ZipOutputStream::setComment` and `ZipEntry::setComment` are updated to 
> clarify the consequences of such string values.  
> 
> A CSR has been drafted. Its specification section will be updated after an 
> initial round of review of the specification text in this PR.

Eirik Bjørsnøs 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 nine additional 
commits since the last revision:

 - Merge branch 'master' into zos-setcomment-unmappable
 - Update copyright year
 - Add null / empty string note to ZipEntry::setComment. Use "an empty string" 
consistently.
 - Lift null and empty string note into the method description
 - Change "the empty string" to "an empty string"
 - Remove unused import
 - Add note to @param comment specification that the comment may be set to null 
or the empty string to produce no ZIP file comment
 - Update spec according to review suggestion
 - Update ZipOutputStream.setComment to declare that it throws 
IllegalArgumentException for unmappable characters in comment

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

Changes:
  - all: https://git.openjdk.org/jdk/pull/30338/files
  - new: https://git.openjdk.org/jdk/pull/30338/files/aa5012b8..4d111ef4

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=30338&range=08
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=30338&range=07-08

  Stats: 70322 lines in 1915 files changed: 37691 ins; 15270 del; 17361 mod
  Patch: https://git.openjdk.org/jdk/pull/30338.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/30338/head:pull/30338

PR: https://git.openjdk.org/jdk/pull/30338

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