This changeset refactors `java/awt/event/KeyEvent/FunctionKeyTest.java`. Key changes:
- Use `CyclicBarrier` to verify whether a key is pressed and released; - Use `CountDownLatch` for frame activation; - Ensure thread-safety for keeping thrown exceptions. Other changes: - Made `FunctionKeyTester` a nested class inside `FunctionKeyTest`; - Used constants for the key events rather than magic numbers. I ran the updated test a few times with `JTREG=REPEAT_COUNT=20`, the test has passed. The updated test executes somewhat quicker than the old one. @azvegint, you may want to take a look. ------------- Commit messages: - 8340007: Refactor KeyEvent/FunctionKeyTest.java Changes: https://git.openjdk.org/jdk/pull/21013/files Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=21013&range=00 Issue: https://bugs.openjdk.org/browse/JDK-8340007 Stats: 114 lines in 1 file changed: 62 ins; 15 del; 37 mod Patch: https://git.openjdk.org/jdk/pull/21013.diff Fetch: git fetch https://git.openjdk.org/jdk.git pull/21013/head:pull/21013 PR: https://git.openjdk.org/jdk/pull/21013
