RFR: 8352682: Opensource JComponent tests [v3]

[Prasanta Sadhukhan]

> Few JComponent tests are opensourced

Prasanta Sadhukhan has updated the pull request incrementally with one additional commit since the last revision:

  Redundant method removed

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

Changes:
  - all: https://git.openjdk.org/jdk/pull/24562/files
  - new: https://git.openjdk.org/jdk/pull/24562/files/518da8f3..7eac686e

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=24562&range=02
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=24562&range=01-02

  Stats: 23 lines in 1 file changed: 2 ins; 16 del; 5 mod
  Patch: https://git.openjdk.org/jdk/pull/24562.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/24562/head:pull/24562

PR: https://git.openjdk.org/jdk/pull/24562