Summary
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Stop running annotation processors found on the class path by default. That behavior can still be enabled by using one or more separate options.

Problem
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Starting in JDK 21, the message printed by JDK-8310061 is:

    Annotation processing is enabled because one or more processors were found
    on the class path. A future release of javac may disable annotation processing
    unless at least one processor is specified by name (-processor), or a search
    path is specified (--processor-path, --processor-module-path), or annotation
    processing is enabled explicitly (-proc:only, -proc:full).
    Use -Xlint:-options to suppress this message.
    Use -proc:none to disable annotation processing.

This CSR is to implement the future disabling described in the message above.

Solution
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Without other configuration options, do not search the class path for annotation processors.

Specification
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No specification changes.