Raise the minimum Java version to 21. - #781
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See also Mockito documentation: [Explicitly setting up instrumentation for inline mocking (Java 21+)](https://javadoc.io/doc/org.mockito/mockito-core/latest/org.mockito/org/mockito/Mockito.html#0.3) -------- * JDK 21: WARNING: A Java agent has been loaded dynamically (.../byte-buddy-agent-1.12.19.jar) WARNING: If a serviceability tool is in use, please run with -XX:+EnableDynamicAgentLoading to hide this warning WARNING: If a serviceability tool is not in use, please run with -Djdk.instrument.traceUsage for more information WARNING: Dynamic loading of agents will be disallowed by default in a future release
Should actually be solved by either refactoring or `final`izing methods/classes. See also: https://bugs.openjdk.org/browse/JDK-8299995 -------- * JDK 21: - "warning: [this-escape] possible 'this' escape before subclass is fully initialized" - "warning: [this-escape] previous possible 'this' escape happens here via invocation"
…765) "This method was originally specified to test if a reference object has been cleared and enqueued but was never implemented to do this test. This method could be misused due to the inherent race condition or without an associated `ReferenceQueue`. An application relying on this method to release critical resources could cause serious performance issue. An application should use `ReferenceQueue` to reliably determine what reference objects that have been enqueued or `refersTo(null)` to determine if this reference object has been cleared." -------- * JDK 21: "warning: [deprecation] isEnqueued() in Reference has been deprecated"
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Resolves #765.
finalizing methods/classes; see also JDK-8299995, introduced in JDK 21).Depends on both #779 and #780.