| 533 |
|
} |
| 534 |
|
|
| 535 |
|
/** |
| 536 |
+ |
* Returns {@code true} if this queue contains the specified element. |
| 537 |
+ |
* More formally, returns {@code true} if and only if this queue contains |
| 538 |
+ |
* at least one element {@code e} such that {@code o.equals(e)}. |
| 539 |
+ |
* |
| 540 |
+ |
* @param o object to be checked for containment in this queue |
| 541 |
+ |
* @return {@code true} if this queue contains the specified element |
| 542 |
+ |
*/ |
| 543 |
+ |
public boolean contains(Object o) { |
| 544 |
+ |
if (o == null) return false; |
| 545 |
+ |
fullyLock(); |
| 546 |
+ |
try { |
| 547 |
+ |
for (Node<E> p = head.next; p != null; p = p.next) |
| 548 |
+ |
if (o.equals(p.item)) |
| 549 |
+ |
return true; |
| 550 |
+ |
return false; |
| 551 |
+ |
} finally { |
| 552 |
+ |
fullyUnlock(); |
| 553 |
+ |
} |
| 554 |
+ |
} |
| 555 |
+ |
|
| 556 |
+ |
/** |
| 557 |
|
* Returns an array containing all of the elements in this queue, in |
| 558 |
|
* proper sequence. |
| 559 |
|
* |
