Summary

The spec for the copy constructor says that it uses argument's comparator if a PriorityQueue, but meant to say PriorityBlockingQueue.

Problem

The implementation of the copy constructor in fact uses the comparator of the argument if it's a PBQ but not if it's a PQ. This was almost surely a copy-paste error.

Solution

Adjust specification to match the implementation, by replacing "PriorityQueue" with "PriorityBlockingQueue".

Specification

Replace

 * in the specified collection.  If the specified collection is a
 * {@link SortedSet} or a {@link PriorityQueue}, this

with

 * in the specified collection.  If the specified collection is a
 * {@link SortedSet} or a {@link PriorityBlockingQueue}, this