With this changeset, I update the
`java/awt/List/ItemEventTest/ItemEventTest.java` test to improve its stability
and analysis of failures of the test.
1. Use thread-safe `StringBuffer` for `actualSelectionOrder` to track
selecting/deselecting items in the list.
2. Enable `robot.setAutoWaitForIdle(true)` and remove `robot.waitForIdle()`
from the test code.
3. Log `handleEvent` and `ItemListener` which helps to identify test failures.
(In case of [JDK-8204221](https://bugs.openjdk.org/browse/JDK-8204221),
`handleEvent` is never logged.)
5. Take screenshot of the list on failure;
Optionally take screenshot after each mouse press+release if `-save` is
passed as a parameter to the test.
The updated test passes.
-------------
Commit messages:
- 8348299: Update List/ItemEventTest/ItemEventTest.java
Changes: https://git.openjdk.org/jdk/pull/23238/files
Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=23238&range=00
Issue: https://bugs.openjdk.org/browse/JDK-8348299
Stats: 100 lines in 1 file changed: 46 ins; 8 del; 46 mod
Patch: https://git.openjdk.org/jdk/pull/23238.diff
Fetch: git fetch https://git.openjdk.org/jdk.git pull/23238/head:pull/23238
PR: https://git.openjdk.org/jdk/pull/23238
