Clarify the behaviour of new HeadlessException().getMessage() The spec. is updated to be clear that empty means null, not an empty string.
------------- Commit messages: - 8358526 Changes: https://git.openjdk.org/jdk/pull/25881/files Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=25881&range=00 Issue: https://bugs.openjdk.org/browse/JDK-8358526 Stats: 52 lines in 2 files changed: 51 ins; 0 del; 1 mod Patch: https://git.openjdk.org/jdk/pull/25881.diff Fetch: git fetch https://git.openjdk.org/jdk.git pull/25881/head:pull/25881 PR: https://git.openjdk.org/jdk/pull/25881
