On Fri, 31 Jul 2026 04:31:55 GMT, David Holmes <[email protected]> wrote:
> Please review this simple change to give a more informative error message for > `UnsupportedClassVersionError` when trying to load a recent classfile on an > older VM. The wording used has already been finalized - see JBS. > > Testing: > > - added a `println` to `test/jdk/java/lang/System/Versions.java` to allow > manual verification via the jtr file. Sample output: > > java.lang.UnsupportedClassVersionError: ClassVersionTest requires a newer > Java runtime. The runtime in use, Java 28, supports class file versions up to > 72.0, but the class file version of ClassVersionTest is 73.0. > > - added a new test case to > `test/hotspot/jtreg/runtime/ClassFile/PreviewVersion.java` to show preview > classfiles are also handled as expected > > Tier 1 sanity testing. > > Thanks > > --------- > - [x] I confirm that I make this contribution in accordance with the [OpenJDK > Interim AI Policy](https://openjdk.org/legal/ai). Looks good in principle. This should be easy to backport too. ------------- Marked as reviewed by liach (Reviewer). PR Review: https://git.openjdk.org/jdk/pull/32117#pullrequestreview-4825608898
