source: trunk/src/gcc/libjava/java/util/TreeSet.java@ 1479

/* TreeSet.java -- a class providing a TreeMap-backed SortedSet
   Copyright (C) 1999, 2000, 2001 Free Software Foundation, Inc.

This file is part of GNU Classpath.

GNU Classpath is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2, or (at your option)
any later version.

GNU Classpath is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
General Public License for more details.

You should have received a copy of the GNU General Public License
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Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
02111-1307 USA.

Linking this library statically or dynamically with other modules is
making a combined work based on this library.  Thus, the terms and
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As a special exception, the copyright holders of this library give you
permission to link this library with independent modules to produce an
executable, regardless of the license terms of these independent
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terms of your choice, provided that you also meet, for each linked
independent module, the terms and conditions of the license of that
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exception statement from your version. */


package java.util;

import java.io.IOException;
import java.io.Serializable;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;

/**
 * This class provides a TreeMap-backed implementation of the SortedSet
 * interface. The elements will be sorted according to their <i>natural
 * order</i>, or according to the provided <code>Comparator</code>.<p>
 *
 * Most operations are O(log n), but there is so much overhead that this
 * makes small sets expensive. Note that the ordering must be <i>consistent
 * with equals</i> to correctly implement the Set interface. If this
 * condition is violated, the set is still well-behaved, but you may have
 * suprising results when comparing it to other sets.<p>
 *
 * This implementation is not synchronized. If you need to share this between
 * multiple threads, do something like:<br>
 * <code>SortedSet s
 *       = Collections.synchronizedSortedSet(new TreeSet(...));</code><p>
 *
 * The iterators are <i>fail-fast</i>, meaning that any structural
 * modification, except for <code>remove()</code> called on the iterator
 * itself, cause the iterator to throw a
 * <code>ConcurrentModificationException</code> rather than exhibit
 * non-deterministic behavior.
 *
 * @author Jon Zeppieri
 * @author Bryce McKinlay
 * @author Eric Blake <[email protected]>
 * @see Collection