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https://issues.apache.org/jira/browse/COLLECTIONS-799?focusedWorklogId=647872&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-647872
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ASF GitHub Bot logged work on COLLECTIONS-799:
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Author: ASF GitHub Bot
Created on: 08/Sep/21 10:09
Start Date: 08/Sep/21 10:09
Worklog Time Spent: 10m
Work Description: scordio commented on pull request #250:
URL:
https://github.com/apache/commons-collections/pull/250#issuecomment-915104258
Should I add an entry to `changes.xml` or is that part of the merge process?
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Issue Time Tracking
-------------------
Worklog Id: (was: 647872)
Time Spent: 50m (was: 40m)
> UnmodifiableNavigableSet can be modified by pollFirst() and pollLast()
> ----------------------------------------------------------------------
>
> Key: COLLECTIONS-799
> URL: https://issues.apache.org/jira/browse/COLLECTIONS-799
> Project: Commons Collections
> Issue Type: Bug
> Components: Collection, Set
> Affects Versions: 4.4
> Reporter: Stefano Cordio
> Priority: Major
> Fix For: 4.5
>
> Time Spent: 50m
> Remaining Estimate: 0h
>
> [{{pollFirst()}}|https://docs.oracle.com/javase/7/docs/api/java/util/NavigableSet.html#pollFirst()]
> and
> [{{pollLast()}}|https://docs.oracle.com/javase/7/docs/api/java/util/NavigableSet.html#pollLast()]
> are successfully executed and do not throw an
> {{UnsupportedOperationException}} on an {{UnmodifiableNavigableSet}} instance.
> In my opinion,
> {{org.apache.commons.collections4.set.UnmodifiableNavigableSet}} should have
> an implementation similar to
> {{java.util.Collections.UnmodifiableNavigableSet}}, where both methods throw
> an {{UnsupportedOperationException}}:
> https://github.com/openjdk/jdk/blob/708407eddc9d52c01de02e3986c05e1c6225fa85/src/java.base/share/classes/java/util/Collections.java#L1278-L1279
> This was detected during working on
> https://github.com/assertj/assertj-core/pull/2328.
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