JSR 392 (Java SE 17): JEP Proposed to Target: 403: Strongly Encapsulate JDK Internals

Iris Clark iris.clark at oracle.com
Wed May 19 15:56:55 UTC 2021

The following JEP with scope "SE" has been proposed to target JDK 17:

  403: Strongly Encapsulate JDK Internals

  Summary: Strongly encapsulate all internal elements of the JDK, except
  for critical internal APIs such as sun.misc.Unsafe.  It will no longer
  be possible to relax the strong encapsulation of internal elements
  via a single command-line option, as was possible in JDK 9 through
  JDK 16.

The announced deadline for feedback to jdk-dev is Tue 25 May 23:59 UTC:


If there are no unresolved objections at that time, then the JEP will be moved
to the Targeted state, indicating that the feature is expected to appear in
the specified release of the JDK Project.  For more information about states,
see the JEP Process document:


A dashboard that lists JEPs with "SE" scope may be found via a link on this



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