Clean warnings found in jpackage tests when building them with `-Xlint:all` option in Eclipse IDE.
They are: - redundant imports (solution: remove) - unused function/fields (solution: remove) - missing SuppressWarnings-s (solution: add what is missing) - redundant SuppressWarnings-s (solution: remove) - raw types used (solution: use wildcard or more specific types if appropriate) - generic varargs (solution: convert to single/double/list arguments) - an incomplete list of enum elements in switch statements (solution: add `default` branch) To prevent regression, added `-Xlint:all -Werror` to the compiler command line of all jpackage tests ------------- Commit messages: - Update copyright year - Add -Xlint:all and -Werror args to compiler command line of all jpackage tests - Bad merge fix - Merge branch 'master' into jlint-tests - Copyright year updated - Undo jlint clean up for the implementation - More jlint errors fixed - Merge branch 'master' into jlint-tests - "Cleanup" bugfix. Double facepalm - Merge branch 'master' into jlint-tests - ... and 3 more: https://git.openjdk.org/jdk/compare/eb847026...47217bb3 Changes: https://git.openjdk.org/jdk/pull/23455/files Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=23455&range=00 Issue: https://bugs.openjdk.org/browse/JDK-8349564 Stats: 346 lines in 82 files changed: 68 ins; 51 del; 227 mod Patch: https://git.openjdk.org/jdk/pull/23455.diff Fetch: git fetch https://git.openjdk.org/jdk.git pull/23455/head:pull/23455 PR: https://git.openjdk.org/jdk/pull/23455
