Please review this change, thanks! **Description:**
`java -XshowSettings` without an application currently prints the requested settings, then prints usage information and exits with code 1. **Solution:** Treat `-XshowSettings` as an option that can be used without an application target. During argument parsing, do not mark the absence of a main class or JAR file as an error when `-XshowSettings` is specified. After the settings and any explicitly requested launcher output have been processed, exit normally if no application was provided. --------- - [x] I confirm that I make this contribution in accordance with the [OpenJDK Interim AI Policy](https://openjdk.org/legal/ai). ------------- Commit messages: - fix JDK-8387750 Changes: https://git.openjdk.org/jdk/pull/31891/files Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=31891&range=00 Issue: https://bugs.openjdk.org/browse/JDK-8387750 Stats: 27 lines in 2 files changed: 24 ins; 0 del; 3 mod Patch: https://git.openjdk.org/jdk/pull/31891.diff Fetch: git fetch https://git.openjdk.org/jdk.git pull/31891/head:pull/31891 PR: https://git.openjdk.org/jdk/pull/31891
