this(capacity, fair);
    if (capacity < c.size()) throw new IllegalArgumentException();

    for (E e : c) add(e);
  }

  @SuppressWarnings("unchecked") // please don't try this home, kids
  private static <E> E[] newEArray(int capacity) {
    return (E[]) new Object[capacity];
  }

  /**
   * Inserts the specified element at the tail of this queue if it is possible to do so immediately

    this(capacity, fair);
    if (capacity < c.size()) throw new IllegalArgumentException();

    for (E e : c) add(e);
  }

  @SuppressWarnings("unchecked") // please don't try this home, kids
  private static <E> E[] newEArray(int capacity) {
    return (E[]) new Object[capacity];
  }

  /**
   * Inserts the specified element at the tail of this queue if it is possible to do so immediately