public PriorityQueue(PriorityQueue<? extends E> c){
  getFromPriorityQueue(c);
}

public PriorityQueue ( PriorityQueue < ? extends E > c ) { getFromPriorityQueue ( c ) ; }
constructs a priority queue that contains the elements of another priority queue . the constructed priority queue has the initial capacity of 110 % of the specified one . both priority queues have the same comparator .
