This file is indexed.

/usr/share/doc/libbackport-util-concurrent-java/api/edu/emory/mathcs/backport/java/util/NavigableSet.html is in libbackport-util-concurrent-java-doc 3.1-3build1.

This file is owned by root:root, with mode 0o644.

The actual contents of the file can be viewed below.

  1
  2
  3
  4
  5
  6
  7
  8
  9
 10
 11
 12
 13
 14
 15
 16
 17
 18
 19
 20
 21
 22
 23
 24
 25
 26
 27
 28
 29
 30
 31
 32
 33
 34
 35
 36
 37
 38
 39
 40
 41
 42
 43
 44
 45
 46
 47
 48
 49
 50
 51
 52
 53
 54
 55
 56
 57
 58
 59
 60
 61
 62
 63
 64
 65
 66
 67
 68
 69
 70
 71
 72
 73
 74
 75
 76
 77
 78
 79
 80
 81
 82
 83
 84
 85
 86
 87
 88
 89
 90
 91
 92
 93
 94
 95
 96
 97
 98
 99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<!-- NewPage -->
<html lang="en">
<head>
<!-- Generated by javadoc (version 1.7.0_03) on Fri May 18 11:21:07 UTC 2012 -->
<title>NavigableSet</title>
<meta name="date" content="2012-05-18">
<link rel="stylesheet" type="text/css" href="../../../../../../stylesheet.css" title="Style">
</head>
<body>
<script type="text/javascript"><!--
    if (location.href.indexOf('is-external=true') == -1) {
        parent.document.title="NavigableSet";
    }
//-->
</script>
<noscript>
<div>JavaScript is disabled on your browser.</div>
</noscript>
<!-- ========= START OF TOP NAVBAR ======= -->
<div class="topNav"><a name="navbar_top">
<!--   -->
</a><a href="#skip-navbar_top" title="Skip navigation links"></a><a name="navbar_top_firstrow">
<!--   -->
</a>
<ul class="navList" title="Navigation">
<li><a href="../../../../../../overview-summary.html">Overview</a></li>
<li><a href="package-summary.html">Package</a></li>
<li class="navBarCell1Rev">Class</li>
<li><a href="package-tree.html">Tree</a></li>
<li><a href="../../../../../../deprecated-list.html">Deprecated</a></li>
<li><a href="../../../../../../index-all.html">Index</a></li>
<li><a href="../../../../../../help-doc.html">Help</a></li>
</ul>
</div>
<div class="subNav">
<ul class="navList">
<li><a href="../../../../../../edu/emory/mathcs/backport/java/util/NavigableMap.html" title="interface in edu.emory.mathcs.backport.java.util"><span class="strong">Prev Class</span></a></li>
<li><a href="../../../../../../edu/emory/mathcs/backport/java/util/PriorityQueue.html" title="class in edu.emory.mathcs.backport.java.util"><span class="strong">Next Class</span></a></li>
</ul>
<ul class="navList">
<li><a href="../../../../../../index.html?edu/emory/mathcs/backport/java/util/NavigableSet.html" target="_top">Frames</a></li>
<li><a href="NavigableSet.html" target="_top">No Frames</a></li>
</ul>
<ul class="navList" id="allclasses_navbar_top">
<li><a href="../../../../../../allclasses-noframe.html">All Classes</a></li>
</ul>
<div>
<script type="text/javascript"><!--
  allClassesLink = document.getElementById("allclasses_navbar_top");
  if(window==top) {
    allClassesLink.style.display = "block";
  }
  else {
    allClassesLink.style.display = "none";
  }
  //-->
</script>
</div>
<div>
<ul class="subNavList">
<li>Summary:&nbsp;</li>
<li>Nested&nbsp;|&nbsp;</li>
<li>Field&nbsp;|&nbsp;</li>
<li>Constr&nbsp;|&nbsp;</li>
<li><a href="#method_summary">Method</a></li>
</ul>
<ul class="subNavList">
<li>Detail:&nbsp;</li>
<li>Field&nbsp;|&nbsp;</li>
<li>Constr&nbsp;|&nbsp;</li>
<li><a href="#method_detail">Method</a></li>
</ul>
</div>
<a name="skip-navbar_top">
<!--   -->
</a></div>
<!-- ========= END OF TOP NAVBAR ========= -->
<!-- ======== START OF CLASS DATA ======== -->
<div class="header">
<div class="subTitle">edu.emory.mathcs.backport.java.util</div>
<h2 title="Interface NavigableSet" class="title">Interface NavigableSet</h2>
</div>
<div class="contentContainer">
<div class="description">
<ul class="blockList">
<li class="blockList">
<dl>
<dt>All Superinterfaces:</dt>
<dd>java.util.Collection, java.lang.Iterable, java.util.Set, java.util.SortedSet</dd>
</dl>
<dl>
<dt>All Known Implementing Classes:</dt>
<dd><a href="../../../../../../edu/emory/mathcs/backport/java/util/concurrent/ConcurrentSkipListSet.html" title="class in edu.emory.mathcs.backport.java.util.concurrent">ConcurrentSkipListSet</a>, <a href="../../../../../../edu/emory/mathcs/backport/java/util/TreeSet.html" title="class in edu.emory.mathcs.backport.java.util">TreeSet</a></dd>
</dl>
<hr>
<br>
<pre>public interface <span class="strong">NavigableSet</span>
extends java.util.SortedSet</pre>
<div class="block">A <code>SortedSet</code> extended with navigation methods reporting
 closest matches for given search targets. Methods <code>lower</code>,
 <code>floor</code>, <code>ceiling</code>, and <code>higher</code> return elements
 respectively less than, less than or equal, greater than or equal,
 and greater than a given element, returning <code>null</code> if there
 is no such element.  A <code>NavigableSet</code> may be accessed and
 traversed in either ascending or descending order.  The <code>descendingSet</code> method returns a view of the set with the senses of
 all relational and directional methods inverted. The performance of
 ascending operations and views is likely to be faster than that of
 descending ones.  This interface additionally defines methods
 <code>pollFirst</code> and <code>pollLast</code> that return and remove the
 lowest and highest element, if one exists, else returning <code>null</code>.  Methods <code>subSet</code>, <code>headSet</code>,
 and <code>tailSet</code> differ from the like-named <code>SortedSet</code> methods in accepting additional arguments describing
 whether lower and upper bounds are inclusive versus exclusive.
 Subsets of any <code>NavigableSet</code> must implement the <code>NavigableSet</code> interface.

 <p> The return values of navigation methods may be ambiguous in
 implementations that permit <code>null</code> elements. However, even
 in this case the result can be disambiguated by checking
 <code>contains(null)</code>. To avoid such issues, implementations of
 this interface are encouraged to <em>not</em> permit insertion of
 <code>null</code> elements. (Note that sorted sets of <code>Comparable</code> elements intrinsically do not permit <code>null</code>.)

 <p>Methods
 <a href="../../../../../../edu/emory/mathcs/backport/java/util/NavigableSet.html#subSet(java.lang.Object, java.lang.Object)"><code>subSet(E, E)</code></a>,
 <a href="../../../../../../edu/emory/mathcs/backport/java/util/NavigableSet.html#headSet(java.lang.Object)"><code>headSet(E)</code></a>, and
 <a href="../../../../../../edu/emory/mathcs/backport/java/util/NavigableSet.html#tailSet(java.lang.Object)"><code>tailSet(E)</code></a>
 are specified to return <code>SortedSet</code> to allow existing
 implementations of <code>SortedSet</code> to be compatibly retrofitted to
 implement <code>NavigableSet</code>, but extensions and implementations
 of this interface are encouraged to override these methods to return
 <code>NavigableSet</code>.

 <p>This interface is a member of the
 <a href="../../../../../../../technotes/guides/collections/index.html">
 Java Collections Framework</a>.</div>
<dl><dt><span class="strong">Since:</span></dt>
  <dd>1.6</dd>
<dt><span class="strong">Author:</span></dt>
  <dd>Doug Lea, Josh Bloch</dd></dl>
</li>
</ul>
</div>
<div class="summary">
<ul class="blockList">
<li class="blockList">
<!-- ========== METHOD SUMMARY =========== -->
<ul class="blockList">
<li class="blockList"><a name="method_summary">
<!--   -->
</a>
<h3>Method Summary</h3>
<table class="overviewSummary" border="0" cellpadding="3" cellspacing="0" summary="Method Summary table, listing methods, and an explanation">
<caption><span>Methods</span><span class="tabEnd">&nbsp;</span></caption>
<tr>
<th class="colFirst" scope="col">Modifier and Type</th>
<th class="colLast" scope="col">Method and Description</th>
</tr>
<tr class="altColor">
<td class="colFirst"><code>java.lang.Object</code></td>
<td class="colLast"><code><strong><a href="../../../../../../edu/emory/mathcs/backport/java/util/NavigableSet.html#ceiling(java.lang.Object)">ceiling</a></strong>(java.lang.Object&nbsp;e)</code>
<div class="block">Returns the least element in this set greater than or equal to
 the given element, or <code>null</code> if there is no such element.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>java.util.Iterator</code></td>
<td class="colLast"><code><strong><a href="../../../../../../edu/emory/mathcs/backport/java/util/NavigableSet.html#descendingIterator()">descendingIterator</a></strong>()</code>
<div class="block">Returns an iterator over the elements in this set, in descending order.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code><a href="../../../../../../edu/emory/mathcs/backport/java/util/NavigableSet.html" title="interface in edu.emory.mathcs.backport.java.util">NavigableSet</a></code></td>
<td class="colLast"><code><strong><a href="../../../../../../edu/emory/mathcs/backport/java/util/NavigableSet.html#descendingSet()">descendingSet</a></strong>()</code>
<div class="block">Returns a reverse order view of the elements contained in this set.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>java.lang.Object</code></td>
<td class="colLast"><code><strong><a href="../../../../../../edu/emory/mathcs/backport/java/util/NavigableSet.html#floor(java.lang.Object)">floor</a></strong>(java.lang.Object&nbsp;e)</code>
<div class="block">Returns the greatest element in this set less than or equal to
 the given element, or <code>null</code> if there is no such element.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>java.util.SortedSet</code></td>
<td class="colLast"><code><strong><a href="../../../../../../edu/emory/mathcs/backport/java/util/NavigableSet.html#headSet(java.lang.Object)">headSet</a></strong>(java.lang.Object&nbsp;toElement)</code></td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code><a href="../../../../../../edu/emory/mathcs/backport/java/util/NavigableSet.html" title="interface in edu.emory.mathcs.backport.java.util">NavigableSet</a></code></td>
<td class="colLast"><code><strong><a href="../../../../../../edu/emory/mathcs/backport/java/util/NavigableSet.html#headSet(java.lang.Object, boolean)">headSet</a></strong>(java.lang.Object&nbsp;toElement,
       boolean&nbsp;inclusive)</code>
<div class="block">Returns a view of the portion of this set whose elements are less than
 (or equal to, if <code>inclusive</code> is true) <code>toElement</code>.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>java.lang.Object</code></td>
<td class="colLast"><code><strong><a href="../../../../../../edu/emory/mathcs/backport/java/util/NavigableSet.html#higher(java.lang.Object)">higher</a></strong>(java.lang.Object&nbsp;e)</code>
<div class="block">Returns the least element in this set strictly greater than the
 given element, or <code>null</code> if there is no such element.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>java.util.Iterator</code></td>
<td class="colLast"><code><strong><a href="../../../../../../edu/emory/mathcs/backport/java/util/NavigableSet.html#iterator()">iterator</a></strong>()</code>
<div class="block">Returns an iterator over the elements in this set, in ascending order.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>java.lang.Object</code></td>
<td class="colLast"><code><strong><a href="../../../../../../edu/emory/mathcs/backport/java/util/NavigableSet.html#lower(java.lang.Object)">lower</a></strong>(java.lang.Object&nbsp;e)</code>
<div class="block">Returns the greatest element in this set strictly less than the
 given element, or <code>null</code> if there is no such element.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>java.lang.Object</code></td>
<td class="colLast"><code><strong><a href="../../../../../../edu/emory/mathcs/backport/java/util/NavigableSet.html#pollFirst()">pollFirst</a></strong>()</code>
<div class="block">Retrieves and removes the first (lowest) element,
 or returns <code>null</code> if this set is empty.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>java.lang.Object</code></td>
<td class="colLast"><code><strong><a href="../../../../../../edu/emory/mathcs/backport/java/util/NavigableSet.html#pollLast()">pollLast</a></strong>()</code>
<div class="block">Retrieves and removes the last (highest) element,
 or returns <code>null</code> if this set is empty.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code><a href="../../../../../../edu/emory/mathcs/backport/java/util/NavigableSet.html" title="interface in edu.emory.mathcs.backport.java.util">NavigableSet</a></code></td>
<td class="colLast"><code><strong><a href="../../../../../../edu/emory/mathcs/backport/java/util/NavigableSet.html#subSet(java.lang.Object, boolean, java.lang.Object, boolean)">subSet</a></strong>(java.lang.Object&nbsp;fromElement,
      boolean&nbsp;fromInclusive,
      java.lang.Object&nbsp;toElement,
      boolean&nbsp;toInclusive)</code>
<div class="block">Returns a view of the portion of this set whose elements range from
 <code>fromElement</code> to <code>toElement</code>.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>java.util.SortedSet</code></td>
<td class="colLast"><code><strong><a href="../../../../../../edu/emory/mathcs/backport/java/util/NavigableSet.html#subSet(java.lang.Object, java.lang.Object)">subSet</a></strong>(java.lang.Object&nbsp;fromElement,
      java.lang.Object&nbsp;toElement)</code></td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>java.util.SortedSet</code></td>
<td class="colLast"><code><strong><a href="../../../../../../edu/emory/mathcs/backport/java/util/NavigableSet.html#tailSet(java.lang.Object)">tailSet</a></strong>(java.lang.Object&nbsp;fromElement)</code></td>
</tr>
<tr class="altColor">
<td class="colFirst"><code><a href="../../../../../../edu/emory/mathcs/backport/java/util/NavigableSet.html" title="interface in edu.emory.mathcs.backport.java.util">NavigableSet</a></code></td>
<td class="colLast"><code><strong><a href="../../../../../../edu/emory/mathcs/backport/java/util/NavigableSet.html#tailSet(java.lang.Object, boolean)">tailSet</a></strong>(java.lang.Object&nbsp;fromElement,
       boolean&nbsp;inclusive)</code>
<div class="block">Returns a view of the portion of this set whose elements are greater
 than (or equal to, if <code>inclusive</code> is true) <code>fromElement</code>.</div>
</td>
</tr>
</table>
<ul class="blockList">
<li class="blockList"><a name="methods_inherited_from_class_java.util.SortedSet">
<!--   -->
</a>
<h3>Methods inherited from interface&nbsp;java.util.SortedSet</h3>
<code>comparator, first, last</code></li>
</ul>
<ul class="blockList">
<li class="blockList"><a name="methods_inherited_from_class_java.util.Set">
<!--   -->
</a>
<h3>Methods inherited from interface&nbsp;java.util.Set</h3>
<code>add, addAll, clear, contains, containsAll, equals, hashCode, isEmpty, remove, removeAll, retainAll, size, toArray, toArray</code></li>
</ul>
</li>
</ul>
</li>
</ul>
</div>
<div class="details">
<ul class="blockList">
<li class="blockList">
<!-- ============ METHOD DETAIL ========== -->
<ul class="blockList">
<li class="blockList"><a name="method_detail">
<!--   -->
</a>
<h3>Method Detail</h3>
<a name="lower(java.lang.Object)">
<!--   -->
</a>
<ul class="blockList">
<li class="blockList">
<h4>lower</h4>
<pre>java.lang.Object&nbsp;lower(java.lang.Object&nbsp;e)</pre>
<div class="block">Returns the greatest element in this set strictly less than the
 given element, or <code>null</code> if there is no such element.</div>
<dl><dt><span class="strong">Parameters:</span></dt><dd><code>e</code> - the value to match</dd>
<dt><span class="strong">Returns:</span></dt><dd>the greatest element less than <code>e</code>,
         or <code>null</code> if there is no such element</dd>
<dt><span class="strong">Throws:</span></dt>
<dd><code>java.lang.ClassCastException</code> - if the specified element cannot be
         compared with the elements currently in the set</dd>
<dd><code>java.lang.NullPointerException</code> - if the specified element is null
         and this set does not permit null elements</dd></dl>
</li>
</ul>
<a name="floor(java.lang.Object)">
<!--   -->
</a>
<ul class="blockList">
<li class="blockList">
<h4>floor</h4>
<pre>java.lang.Object&nbsp;floor(java.lang.Object&nbsp;e)</pre>
<div class="block">Returns the greatest element in this set less than or equal to
 the given element, or <code>null</code> if there is no such element.</div>
<dl><dt><span class="strong">Parameters:</span></dt><dd><code>e</code> - the value to match</dd>
<dt><span class="strong">Returns:</span></dt><dd>the greatest element less than or equal to <code>e</code>,
         or <code>null</code> if there is no such element</dd>
<dt><span class="strong">Throws:</span></dt>
<dd><code>java.lang.ClassCastException</code> - if the specified element cannot be
         compared with the elements currently in the set</dd>
<dd><code>java.lang.NullPointerException</code> - if the specified element is null
         and this set does not permit null elements</dd></dl>
</li>
</ul>
<a name="ceiling(java.lang.Object)">
<!--   -->
</a>
<ul class="blockList">
<li class="blockList">
<h4>ceiling</h4>
<pre>java.lang.Object&nbsp;ceiling(java.lang.Object&nbsp;e)</pre>
<div class="block">Returns the least element in this set greater than or equal to
 the given element, or <code>null</code> if there is no such element.</div>
<dl><dt><span class="strong">Parameters:</span></dt><dd><code>e</code> - the value to match</dd>
<dt><span class="strong">Returns:</span></dt><dd>the least element greater than or equal to <code>e</code>,
         or <code>null</code> if there is no such element</dd>
<dt><span class="strong">Throws:</span></dt>
<dd><code>java.lang.ClassCastException</code> - if the specified element cannot be
         compared with the elements currently in the set</dd>
<dd><code>java.lang.NullPointerException</code> - if the specified element is null
         and this set does not permit null elements</dd></dl>
</li>
</ul>
<a name="higher(java.lang.Object)">
<!--   -->
</a>
<ul class="blockList">
<li class="blockList">
<h4>higher</h4>
<pre>java.lang.Object&nbsp;higher(java.lang.Object&nbsp;e)</pre>
<div class="block">Returns the least element in this set strictly greater than the
 given element, or <code>null</code> if there is no such element.</div>
<dl><dt><span class="strong">Parameters:</span></dt><dd><code>e</code> - the value to match</dd>
<dt><span class="strong">Returns:</span></dt><dd>the least element greater than <code>e</code>,
         or <code>null</code> if there is no such element</dd>
<dt><span class="strong">Throws:</span></dt>
<dd><code>java.lang.ClassCastException</code> - if the specified element cannot be
         compared with the elements currently in the set</dd>
<dd><code>java.lang.NullPointerException</code> - if the specified element is null
         and this set does not permit null elements</dd></dl>
</li>
</ul>
<a name="pollFirst()">
<!--   -->
</a>
<ul class="blockList">
<li class="blockList">
<h4>pollFirst</h4>
<pre>java.lang.Object&nbsp;pollFirst()</pre>
<div class="block">Retrieves and removes the first (lowest) element,
 or returns <code>null</code> if this set is empty.</div>
<dl><dt><span class="strong">Returns:</span></dt><dd>the first element, or <code>null</code> if this set is empty</dd></dl>
</li>
</ul>
<a name="pollLast()">
<!--   -->
</a>
<ul class="blockList">
<li class="blockList">
<h4>pollLast</h4>
<pre>java.lang.Object&nbsp;pollLast()</pre>
<div class="block">Retrieves and removes the last (highest) element,
 or returns <code>null</code> if this set is empty.</div>
<dl><dt><span class="strong">Returns:</span></dt><dd>the last element, or <code>null</code> if this set is empty</dd></dl>
</li>
</ul>
<a name="iterator()">
<!--   -->
</a>
<ul class="blockList">
<li class="blockList">
<h4>iterator</h4>
<pre>java.util.Iterator&nbsp;iterator()</pre>
<div class="block">Returns an iterator over the elements in this set, in ascending order.</div>
<dl>
<dt><strong>Specified by:</strong></dt>
<dd><code>iterator</code>&nbsp;in interface&nbsp;<code>java.util.Collection</code></dd>
<dt><strong>Specified by:</strong></dt>
<dd><code>iterator</code>&nbsp;in interface&nbsp;<code>java.lang.Iterable</code></dd>
<dt><strong>Specified by:</strong></dt>
<dd><code>iterator</code>&nbsp;in interface&nbsp;<code>java.util.Set</code></dd>
<dt><span class="strong">Returns:</span></dt><dd>an iterator over the elements in this set, in ascending order</dd></dl>
</li>
</ul>
<a name="descendingSet()">
<!--   -->
</a>
<ul class="blockList">
<li class="blockList">
<h4>descendingSet</h4>
<pre><a href="../../../../../../edu/emory/mathcs/backport/java/util/NavigableSet.html" title="interface in edu.emory.mathcs.backport.java.util">NavigableSet</a>&nbsp;descendingSet()</pre>
<div class="block">Returns a reverse order view of the elements contained in this set.
 The descending set is backed by this set, so changes to the set are
 reflected in the descending set, and vice-versa.  If either set is
 modified while an iteration over either set is in progress (except
 through the iterator's own <code>remove</code> operation), the results of
 the iteration are undefined.

 <p>The returned set has an ordering equivalent to
 <tt><a href="../../../../../../edu/emory/mathcs/backport/java/util/Collections.html#reverseOrder(java.util.Comparator)"><code>Collections.reverseOrder</code></a>(comparator())</tt>.
 The expression <code>s.descendingSet().descendingSet()</code> returns a
 view of <code>s</code> essentially equivalent to <code>s</code>.</div>
<dl><dt><span class="strong">Returns:</span></dt><dd>a reverse order view of this set</dd></dl>
</li>
</ul>
<a name="descendingIterator()">
<!--   -->
</a>
<ul class="blockList">
<li class="blockList">
<h4>descendingIterator</h4>
<pre>java.util.Iterator&nbsp;descendingIterator()</pre>
<div class="block">Returns an iterator over the elements in this set, in descending order.
 Equivalent in effect to <code>descendingSet().iterator()</code>.</div>
<dl><dt><span class="strong">Returns:</span></dt><dd>an iterator over the elements in this set, in descending order</dd></dl>
</li>
</ul>
<a name="subSet(java.lang.Object, boolean, java.lang.Object, boolean)">
<!--   -->
</a>
<ul class="blockList">
<li class="blockList">
<h4>subSet</h4>
<pre><a href="../../../../../../edu/emory/mathcs/backport/java/util/NavigableSet.html" title="interface in edu.emory.mathcs.backport.java.util">NavigableSet</a>&nbsp;subSet(java.lang.Object&nbsp;fromElement,
                  boolean&nbsp;fromInclusive,
                  java.lang.Object&nbsp;toElement,
                  boolean&nbsp;toInclusive)</pre>
<div class="block">Returns a view of the portion of this set whose elements range from
 <code>fromElement</code> to <code>toElement</code>.  If <code>fromElement</code> and
 <code>toElement</code> are equal, the returned set is empty unless <code>fromExclusive</code> and <code>toExclusive</code> are both true.  The returned set
 is backed by this set, so changes in the returned set are reflected in
 this set, and vice-versa.  The returned set supports all optional set
 operations that this set supports.

 <p>The returned set will throw an <code>IllegalArgumentException</code>
 on an attempt to insert an element outside its range.</div>
<dl><dt><span class="strong">Parameters:</span></dt><dd><code>fromElement</code> - low endpoint of the returned set</dd><dd><code>fromInclusive</code> - <code>true</code> if the low endpoint
        is to be included in the returned view</dd><dd><code>toElement</code> - high endpoint of the returned set</dd><dd><code>toInclusive</code> - <code>true</code> if the high endpoint
        is to be included in the returned view</dd>
<dt><span class="strong">Returns:</span></dt><dd>a view of the portion of this set whose elements range from
         <code>fromElement</code>, inclusive, to <code>toElement</code>, exclusive</dd>
<dt><span class="strong">Throws:</span></dt>
<dd><code>java.lang.ClassCastException</code> - if <code>fromElement</code> and
         <code>toElement</code> cannot be compared to one another using this
         set's comparator (or, if the set has no comparator, using
         natural ordering).  Implementations may, but are not required
         to, throw this exception if <code>fromElement</code> or
         <code>toElement</code> cannot be compared to elements currently in
         the set.</dd>
<dd><code>java.lang.NullPointerException</code> - if <code>fromElement</code> or
         <code>toElement</code> is null and this set does
         not permit null elements</dd>
<dd><code>java.lang.IllegalArgumentException</code> - if <code>fromElement</code> is
         greater than <code>toElement</code>; or if this set itself
         has a restricted range, and <code>fromElement</code> or
         <code>toElement</code> lies outside the bounds of the range.</dd></dl>
</li>
</ul>
<a name="headSet(java.lang.Object, boolean)">
<!--   -->
</a>
<ul class="blockList">
<li class="blockList">
<h4>headSet</h4>
<pre><a href="../../../../../../edu/emory/mathcs/backport/java/util/NavigableSet.html" title="interface in edu.emory.mathcs.backport.java.util">NavigableSet</a>&nbsp;headSet(java.lang.Object&nbsp;toElement,
                   boolean&nbsp;inclusive)</pre>
<div class="block">Returns a view of the portion of this set whose elements are less than
 (or equal to, if <code>inclusive</code> is true) <code>toElement</code>.  The
 returned set is backed by this set, so changes in the returned set are
 reflected in this set, and vice-versa.  The returned set supports all
 optional set operations that this set supports.

 <p>The returned set will throw an <code>IllegalArgumentException</code>
 on an attempt to insert an element outside its range.</div>
<dl><dt><span class="strong">Parameters:</span></dt><dd><code>toElement</code> - high endpoint of the returned set</dd><dd><code>inclusive</code> - <code>true</code> if the high endpoint
        is to be included in the returned view</dd>
<dt><span class="strong">Returns:</span></dt><dd>a view of the portion of this set whose elements are less than
         (or equal to, if <code>inclusive</code> is true) <code>toElement</code></dd>
<dt><span class="strong">Throws:</span></dt>
<dd><code>java.lang.ClassCastException</code> - if <code>toElement</code> is not compatible
         with this set's comparator (or, if the set has no comparator,
         if <code>toElement</code> does not implement <code>Comparable</code>).
         Implementations may, but are not required to, throw this
         exception if <code>toElement</code> cannot be compared to elements
         currently in the set.</dd>
<dd><code>java.lang.NullPointerException</code> - if <code>toElement</code> is null and
         this set does not permit null elements</dd>
<dd><code>java.lang.IllegalArgumentException</code> - if this set itself has a
         restricted range, and <code>toElement</code> lies outside the
         bounds of the range</dd></dl>
</li>
</ul>
<a name="tailSet(java.lang.Object, boolean)">
<!--   -->
</a>
<ul class="blockList">
<li class="blockList">
<h4>tailSet</h4>
<pre><a href="../../../../../../edu/emory/mathcs/backport/java/util/NavigableSet.html" title="interface in edu.emory.mathcs.backport.java.util">NavigableSet</a>&nbsp;tailSet(java.lang.Object&nbsp;fromElement,
                   boolean&nbsp;inclusive)</pre>
<div class="block">Returns a view of the portion of this set whose elements are greater
 than (or equal to, if <code>inclusive</code> is true) <code>fromElement</code>.
 The returned set is backed by this set, so changes in the returned set
 are reflected in this set, and vice-versa.  The returned set supports
 all optional set operations that this set supports.

 <p>The returned set will throw an <code>IllegalArgumentException</code>
 on an attempt to insert an element outside its range.</div>
<dl><dt><span class="strong">Parameters:</span></dt><dd><code>fromElement</code> - low endpoint of the returned set</dd><dd><code>inclusive</code> - <code>true</code> if the low endpoint
        is to be included in the returned view</dd>
<dt><span class="strong">Returns:</span></dt><dd>a view of the portion of this set whose elements are greater
         than or equal to <code>fromElement</code></dd>
<dt><span class="strong">Throws:</span></dt>
<dd><code>java.lang.ClassCastException</code> - if <code>fromElement</code> is not compatible
         with this set's comparator (or, if the set has no comparator,
         if <code>fromElement</code> does not implement <code>Comparable</code>).
         Implementations may, but are not required to, throw this
         exception if <code>fromElement</code> cannot be compared to elements
         currently in the set.</dd>
<dd><code>java.lang.NullPointerException</code> - if <code>fromElement</code> is null
         and this set does not permit null elements</dd>
<dd><code>java.lang.IllegalArgumentException</code> - if this set itself has a
         restricted range, and <code>fromElement</code> lies outside the
         bounds of the range</dd></dl>
</li>
</ul>
<a name="subSet(java.lang.Object, java.lang.Object)">
<!--   -->
</a>
<ul class="blockList">
<li class="blockList">
<h4>subSet</h4>
<pre>java.util.SortedSet&nbsp;subSet(java.lang.Object&nbsp;fromElement,
                         java.lang.Object&nbsp;toElement)</pre>
<div class="block">

 <p>Equivalent to <code>subSet(fromElement, true, toElement, false)</code>.</div>
<dl>
<dt><strong>Specified by:</strong></dt>
<dd><code>subSet</code>&nbsp;in interface&nbsp;<code>java.util.SortedSet</code></dd>
<dt><span class="strong">Throws:</span></dt>
<dd><code>java.lang.ClassCastException</code></dd>
<dd><code>java.lang.NullPointerException</code></dd>
<dd><code>java.lang.IllegalArgumentException</code></dd></dl>
</li>
</ul>
<a name="headSet(java.lang.Object)">
<!--   -->
</a>
<ul class="blockList">
<li class="blockList">
<h4>headSet</h4>
<pre>java.util.SortedSet&nbsp;headSet(java.lang.Object&nbsp;toElement)</pre>
<div class="block">

 <p>Equivalent to <code>headSet(toElement, false)</code>.</div>
<dl>
<dt><strong>Specified by:</strong></dt>
<dd><code>headSet</code>&nbsp;in interface&nbsp;<code>java.util.SortedSet</code></dd>
<dt><span class="strong">Throws:</span></dt>
<dd><code>java.lang.ClassCastException</code></dd>
<dd><code>java.lang.NullPointerException</code></dd>
<dd><code>java.lang.IllegalArgumentException</code></dd></dl>
</li>
</ul>
<a name="tailSet(java.lang.Object)">
<!--   -->
</a>
<ul class="blockListLast">
<li class="blockList">
<h4>tailSet</h4>
<pre>java.util.SortedSet&nbsp;tailSet(java.lang.Object&nbsp;fromElement)</pre>
<div class="block">

 <p>Equivalent to <code>tailSet(fromElement, true)</code>.</div>
<dl>
<dt><strong>Specified by:</strong></dt>
<dd><code>tailSet</code>&nbsp;in interface&nbsp;<code>java.util.SortedSet</code></dd>
<dt><span class="strong">Throws:</span></dt>
<dd><code>java.lang.ClassCastException</code></dd>
<dd><code>java.lang.NullPointerException</code></dd>
<dd><code>java.lang.IllegalArgumentException</code></dd></dl>
</li>
</ul>
</li>
</ul>
</li>
</ul>
</div>
</div>
<!-- ========= END OF CLASS DATA ========= -->
<!-- ======= START OF BOTTOM NAVBAR ====== -->
<div class="bottomNav"><a name="navbar_bottom">
<!--   -->
</a><a href="#skip-navbar_bottom" title="Skip navigation links"></a><a name="navbar_bottom_firstrow">
<!--   -->
</a>
<ul class="navList" title="Navigation">
<li><a href="../../../../../../overview-summary.html">Overview</a></li>
<li><a href="package-summary.html">Package</a></li>
<li class="navBarCell1Rev">Class</li>
<li><a href="package-tree.html">Tree</a></li>
<li><a href="../../../../../../deprecated-list.html">Deprecated</a></li>
<li><a href="../../../../../../index-all.html">Index</a></li>
<li><a href="../../../../../../help-doc.html">Help</a></li>
</ul>
</div>
<div class="subNav">
<ul class="navList">
<li><a href="../../../../../../edu/emory/mathcs/backport/java/util/NavigableMap.html" title="interface in edu.emory.mathcs.backport.java.util"><span class="strong">Prev Class</span></a></li>
<li><a href="../../../../../../edu/emory/mathcs/backport/java/util/PriorityQueue.html" title="class in edu.emory.mathcs.backport.java.util"><span class="strong">Next Class</span></a></li>
</ul>
<ul class="navList">
<li><a href="../../../../../../index.html?edu/emory/mathcs/backport/java/util/NavigableSet.html" target="_top">Frames</a></li>
<li><a href="NavigableSet.html" target="_top">No Frames</a></li>
</ul>
<ul class="navList" id="allclasses_navbar_bottom">
<li><a href="../../../../../../allclasses-noframe.html">All Classes</a></li>
</ul>
<div>
<script type="text/javascript"><!--
  allClassesLink = document.getElementById("allclasses_navbar_bottom");
  if(window==top) {
    allClassesLink.style.display = "block";
  }
  else {
    allClassesLink.style.display = "none";
  }
  //-->
</script>
</div>
<div>
<ul class="subNavList">
<li>Summary:&nbsp;</li>
<li>Nested&nbsp;|&nbsp;</li>
<li>Field&nbsp;|&nbsp;</li>
<li>Constr&nbsp;|&nbsp;</li>
<li><a href="#method_summary">Method</a></li>
</ul>
<ul class="subNavList">
<li>Detail:&nbsp;</li>
<li>Field&nbsp;|&nbsp;</li>
<li>Constr&nbsp;|&nbsp;</li>
<li><a href="#method_detail">Method</a></li>
</ul>
</div>
<a name="skip-navbar_bottom">
<!--   -->
</a></div>
<!-- ======== END OF BOTTOM NAVBAR ======= -->
</body>
</html>