JDK-8263397 : Release Note: Collections.unmodifiable* Methods Are Idempotent for Their Corresponding Collection
  • Type: Sub-task
  • Component: core-libs
  • Sub-Component: java.util:collections
  • Affected Version: 17
  • Priority: P4
  • Status: Closed
  • Resolution: Delivered
  • OS: generic
  • CPU: generic
  • Submitted: 2021-03-10
  • Updated: 2021-12-05
  • Resolved: 2021-03-10
The Version table provides details related to the release that this issue/RFE will be addressed.

Unresolved : Release in which this issue/RFE will be addressed.
Resolved: Release in which this issue/RFE has been resolved.
Fixed : Release in which this issue/RFE has been fixed. The release containing this fix may be available for download as an Early Access Release or a General Availability Release.

To download the current JDK release, click here.
JDK 17
17Resolved
Description
The `unmodifiable*` methods in `java.util.Collections` will no longer re-wrap a given collection with an unmodifiable view if that collection has already been wrapped by same method.