This fixes a regression from JDK-8377070 where `ImageResourcesTree` treated every image entry path as a package hierarchy. That implicitly assumes directory path segments cannot contain `.`, which is true for package paths but not for ordinary resources such as `META-INF/maven/com.google.code.findbugs/...`.
The fix handles non-preview `META-INF/` entries as resource paths, preserving their directory names as-is and avoiding package inference for those resources. `META-INF/preview/` continues to use the existing package-oriented handling because those entries represent preview class/package content. A regression test was added to `ImageReaderTest` with `META-INF` resources containing dotted path segments, verifying resource lookup and directory contents in both preview-enabled and preview-disabled modes. This change was developed by @david-beaumont. --------- - [x] I confirm that I make this contribution in accordance with the [OpenJDK Interim AI Policy](https://openjdk.org/legal/ai). ------------- Commit messages: - 8385355: NullPointerException in jdk.tools.jlink.internal.ImageResourcesTree after JDK-8377070 Changes: https://git.openjdk.org/jdk/pull/31318/files Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=31318&range=00 Issue: https://bugs.openjdk.org/browse/JDK-8385355 Stats: 53 lines in 2 files changed: 43 ins; 1 del; 9 mod Patch: https://git.openjdk.org/jdk/pull/31318.diff Fetch: git fetch https://git.openjdk.org/jdk.git pull/31318/head:pull/31318 PR: https://git.openjdk.org/jdk/pull/31318
