RFR: 8316324: Opensource five miscellaneous Swing tests [v3]

[Alexander Zuev]

> Clean up and opensource five tests.

Alexander Zuev has updated the pull request incrementally with one additional commit since the last revision:

  Make test fail if it can not instantiate required look and feel;

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

Changes:
  - all: https://git.openjdk.org/jdk/pull/18443/files
  - new: https://git.openjdk.org/jdk/pull/18443/files/5eca231d..f5e97388

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=18443&range=02
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=18443&range=01-02

  Stats: 2 lines in 1 file changed: 0 ins; 0 del; 2 mod
  Patch: https://git.openjdk.org/jdk/pull/18443.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/18443/head:pull/18443

PR: https://git.openjdk.org/jdk/pull/18443