The default title for the instruction frame in `PassFailJFrame` is currently _“Test Instruction Frame”_.
Most tests change this default to _“Test Instructions”_ which describes the content and purpose of the frame better. So, this should be the default title, and it's shorter. jtreg has a property which describes the test name. Thus, the title could be more specific: _“<testName.java> - Test Instructions”_. Additionally, I added javadoc comments to the default parameters of `PassFailJFrame` and to the `Builder.validate` method. ------------- Commit messages: - 8341235: Improve default instruction frame title in PassFailJFrame Changes: https://git.openjdk.org/jdk/pull/21320/files Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=21320&range=00 Issue: https://bugs.openjdk.org/browse/JDK-8341235 Stats: 42 lines in 1 file changed: 39 ins; 0 del; 3 mod Patch: https://git.openjdk.org/jdk/pull/21320.diff Fetch: git fetch https://git.openjdk.org/jdk.git pull/21320/head:pull/21320 PR: https://git.openjdk.org/jdk/pull/21320
