public HardReferenceQueue(final HardReferenceQueueEvictionListener<T> listener,final int capacity){
  this(listener,capacity,Math.min(capacity,DEFAULT_NSCAN));
}

public HardReferenceQueue ( final HardReferenceQueueEvictionListener < T > listener , final int capacity ) { this ( listener , capacity , Math . min ( capacity , DEFAULT_NSCAN ) ) ; }
uses the default # of references to scan on append requests .
