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/* |
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* %W% %E% |
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* |
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* Copyright 2004 Sun Microsystems, Inc. All rights reserved. |
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* Copyright 2005 Sun Microsystems, Inc. All rights reserved. |
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* SUN PROPRIETARY/CONFIDENTIAL. Use is subject to license terms. |
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*/ |
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package java.util; |
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package java.util; |
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/** |
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* Red-Black tree based implementation of the <tt>NavigableMap</tt> interface. |
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* This class guarantees that the map will be in ascending key order, sorted |
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* according to the <i>natural order</i> for the keys' class (see |
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* <tt>Comparable</tt>), or by the comparator provided at creation time, |
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* depending on which constructor is used.<p> |
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* A Red-Black tree based {@link NavigableMap} implementation. |
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* The map is sorted according to the {@linkplain Comparable natural |
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* ordering} of its keys, or by a {@link Comparator} provided at map |
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* creation time, depending on which constructor is used. |
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* |
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* This implementation provides guaranteed log(n) time cost for the |
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* <p>This implementation provides guaranteed log(n) time cost for the |
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* <tt>containsKey</tt>, <tt>get</tt>, <tt>put</tt> and <tt>remove</tt> |
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* operations. Algorithms are adaptations of those in Cormen, Leiserson, and |
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* Rivest's <I>Introduction to Algorithms</I>.<p> |
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* Rivest's <I>Introduction to Algorithms</I>. |
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* |
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* Note that the ordering maintained by a sorted map (whether or not an |
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* <p>Note that the ordering maintained by a sorted map (whether or not an |
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* explicit comparator is provided) must be <i>consistent with equals</i> if |
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* this sorted map is to correctly implement the <tt>Map</tt> interface. (See |
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* <tt>Comparable</tt> or <tt>Comparator</tt> for a precise definition of |
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* method, so two keys that are deemed equal by this method are, from the |
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* standpoint of the sorted map, equal. The behavior of a sorted map |
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* <i>is</i> well-defined even if its ordering is inconsistent with equals; it |
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* just fails to obey the general contract of the <tt>Map</tt> interface.<p> |
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* just fails to obey the general contract of the <tt>Map</tt> interface. |
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* |
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* <b>Note that this implementation is not synchronized.</b> If multiple |
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* <p><b>Note that this implementation is not synchronized.</b> If multiple |
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* threads access a map concurrently, and at least one of the threads modifies |
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* the map structurally, it <i>must</i> be synchronized externally. (A |
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* structural modification is any operation that adds or deletes one or more |
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* time, to prevent accidental unsynchronized access to the map: |
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* <pre> |
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* Map m = Collections.synchronizedMap(new TreeMap(...)); |
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* </pre><p> |
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* </pre> |
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* |
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* The iterators returned by all of this class's "collection view methods" are |
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* <p>The iterators returned by the <tt>iterator</tt> method of the collections |
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* returned by all of this class's "collection view methods" are |
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* <i>fail-fast</i>: if the map is structurally modified at any time after the |
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* iterator is created, in any way except through the iterator's own |
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* <tt>remove</tt> or <tt>add</tt> methods, the iterator throws a |
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* <tt>ConcurrentModificationException</tt>. Thus, in the face of concurrent |
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* <tt>remove</tt> method, the iterator will throw a {@link |
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* ConcurrentModificationException}. Thus, in the face of concurrent |
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* modification, the iterator fails quickly and cleanly, rather than risking |
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* arbitrary, non-deterministic behavior at an undetermined time in the |
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* future. |
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* arbitrary, non-deterministic behavior at an undetermined time in the future. |
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* |
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* <p>Note that the fail-fast behavior of an iterator cannot be guaranteed |
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* as it is, generally speaking, impossible to make any hard guarantees in the |
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* <a href="{@docRoot}/../guide/collections/index.html"> |
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* Java Collections Framework</a>. |
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* |
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* @param <K> the type of keys maintained by this map |
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* @param <V> the type of mapped values |
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* |
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* @author Josh Bloch and Doug Lea |
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* @version %I%, %G% |
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* @see Map |
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implements NavigableMap<K,V>, Cloneable, java.io.Serializable |
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{ |
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/** |
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* The Comparator used to maintain order in this TreeMap, or |
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* null if this TreeMap uses its elements natural ordering. |
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* The comparator used to maintain order in this tree map, or |
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* null if it uses the natural ordering of its keys. |
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* |
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* @serial |
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*/ |
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private void decrementSize() { modCount++; size--; } |
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/** |
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* Constructs a new, empty map, sorted according to the keys' natural |
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* order. All keys inserted into the map must implement the |
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* <tt>Comparable</tt> interface. Furthermore, all such keys must be |
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* <i>mutually comparable</i>: <tt>k1.compareTo(k2)</tt> must not throw a |
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* ClassCastException for any elements <tt>k1</tt> and <tt>k2</tt> in the |
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* map. If the user attempts to put a key into the map that violates this |
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* constraint (for example, the user attempts to put a string key into a |
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* map whose keys are integers), the <tt>put(Object key, Object |
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* value)</tt> call will throw a <tt>ClassCastException</tt>. |
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* |
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* @see Comparable |
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* Constructs a new, empty tree map, using the natural ordering of its |
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* keys. All keys inserted into the map must implement the {@link |
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* Comparable} interface. Furthermore, all such keys must be |
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* <i>mutually comparable</i>: <tt>k1.compareTo(k2)</tt> must not throw |
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* a <tt>ClassCastException</tt> for any keys <tt>k1</tt> and |
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* <tt>k2</tt> in the map. If the user attempts to put a key into the |
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* map that violates this constraint (for example, the user attempts to |
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* put a string key into a map whose keys are integers), the |
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* <tt>put(Object key, Object value)</tt> call will throw a |
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* <tt>ClassCastException</tt>. |
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*/ |
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public TreeMap() { |
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} |
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/** |
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* Constructs a new, empty map, sorted according to the given comparator. |
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* All keys inserted into the map must be <i>mutually comparable</i> by |
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* the given comparator: <tt>comparator.compare(k1, k2)</tt> must not |
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* throw a <tt>ClassCastException</tt> for any keys <tt>k1</tt> and |
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* <tt>k2</tt> in the map. If the user attempts to put a key into the |
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* map that violates this constraint, the <tt>put(Object key, Object |
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* value)</tt> call will throw a <tt>ClassCastException</tt>. |
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* |
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* @param c the comparator that will be used to sort this map. A |
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* <tt>null</tt> value indicates that the keys' <i>natural |
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* ordering</i> should be used. |
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*/ |
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public TreeMap(Comparator<? super K> c) { |
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this.comparator = c; |
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* Constructs a new, empty tree map, ordered according to the given |
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* comparator. All keys inserted into the map must be <i>mutually |
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* comparable</i> by the given comparator: <tt>comparator.compare(k1, |
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* k2)</tt> must not throw a <tt>ClassCastException</tt> for any keys |
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* <tt>k1</tt> and <tt>k2</tt> in the map. If the user attempts to put |
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* a key into the map that violates this constraint, the <tt>put(Object |
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* key, Object value)</tt> call will throw a |
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* <tt>ClassCastException</tt>. |
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* |
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* @param comparator the comparator that will be used to order this map. |
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* If <tt>null</tt>, the {@linkplain Comparable natural |
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* ordering} of the keys will be used. |
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*/ |
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public TreeMap(Comparator<? super K> comparator) { |
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this.comparator = comparator; |
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} |
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/** |
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* Constructs a new map containing the same mappings as the given map, |
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* sorted according to the keys' <i>natural order</i>. All keys inserted |
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* into the new map must implement the <tt>Comparable</tt> interface. |
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* Furthermore, all such keys must be <i>mutually comparable</i>: |
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* <tt>k1.compareTo(k2)</tt> must not throw a <tt>ClassCastException</tt> |
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* for any elements <tt>k1</tt> and <tt>k2</tt> in the map. This method |
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* runs in n*log(n) time. |
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* |
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* @param m the map whose mappings are to be placed in this map. |
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* @throws ClassCastException the keys in t are not Comparable, or |
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* are not mutually comparable. |
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* @throws NullPointerException if the specified map is null. |
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* Constructs a new tree map containing the same mappings as the given |
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* map, ordered according to the <i>natural ordering</i> of its keys. |
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* All keys inserted into the new map must implement the {@link |
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* Comparable} interface. Furthermore, all such keys must be |
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* <i>mutually comparable</i>: <tt>k1.compareTo(k2)</tt> must not throw |
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* a <tt>ClassCastException</tt> for any keys <tt>k1</tt> and |
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* <tt>k2</tt> in the map. This method runs in n*log(n) time. |
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* |
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* @param m the map whose mappings are to be placed in this map |
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* @throws ClassCastException if the keys in m are not {@link Comparable}, |
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* or are not mutually comparable |
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* @throws NullPointerException if the specified map is null |
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*/ |
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public TreeMap(Map<? extends K, ? extends V> m) { |
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putAll(m); |
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} |
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/** |
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* Constructs a new map containing the same mappings as the given |
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* <tt>SortedMap</tt>, sorted according to the same ordering. This method |
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* runs in linear time. |
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* Constructs a new tree map containing the same mappings and |
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* using the same ordering as the specified sorted map. This |
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* method runs in linear time. |
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* |
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* @param m the sorted map whose mappings are to be placed in this map, |
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* and whose comparator is to be used to sort this map. |
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* @throws NullPointerException if the specified sorted map is null. |
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* and whose comparator is to be used to sort this map |
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* @throws NullPointerException if the specified map is null |
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*/ |
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public TreeMap(SortedMap<K, ? extends V> m) { |
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comparator = m.comparator(); |
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/** |
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* Returns the number of key-value mappings in this map. |
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* |
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* @return the number of key-value mappings in this map. |
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* @return the number of key-value mappings in this map |
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*/ |
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public int size() { |
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return size; |
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* Returns <tt>true</tt> if this map contains a mapping for the specified |
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* key. |
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* |
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* @param key key whose presence in this map is to be tested. |
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* |
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* @param key key whose presence in this map is to be tested |
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* @return <tt>true</tt> if this map contains a mapping for the |
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* specified key. |
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* @throws ClassCastException if the key cannot be compared with the keys |
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* currently in the map. |
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* @throws NullPointerException if key is <tt>null</tt> and this map uses |
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* natural ordering, or its comparator does not tolerate |
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* <tt>null</tt> keys. |
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* specified key |
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* @throws ClassCastException if the specified key cannot be compared |
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* with the keys currently in the map |
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* @throws NullPointerException if the specified key is null |
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* and this map uses natural ordering, or its comparator |
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* does not permit null keys |
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*/ |
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public boolean containsKey(Object key) { |
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return getEntry(key) != null; |
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* specified value. More formally, returns <tt>true</tt> if and only if |
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* this map contains at least one mapping to a value <tt>v</tt> such |
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* that <tt>(value==null ? v==null : value.equals(v))</tt>. This |
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* operation will probably require time linear in the Map size for most |
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* implementations of Map. |
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* operation requires time linear in the map size. |
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* |
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* @param value value whose presence in this Map is to be tested. |
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* @return <tt>true</tt> if a mapping to <tt>value</tt> exists; |
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* <tt>false</tt> otherwise. |
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* @param value value whose presence in this map is to be tested |
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* @return <tt>true</tt> if a mapping to <tt>value</tt> exists; |
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* <tt>false</tt> otherwise |
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* @since 1.2 |
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*/ |
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public boolean containsValue(Object value) { |
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} |
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/** |
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* Returns the value to which this map maps the specified key. Returns |
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* <tt>null</tt> if the map contains no mapping for this key. A return |
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* Returns the value to which this map maps the specified key, or |
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* <tt>null</tt> if the map contains no mapping for the key. A return |
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* value of <tt>null</tt> does not <i>necessarily</i> indicate that the |
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* map contains no mapping for the key; it's also possible that the map |
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* explicitly maps the key to <tt>null</tt>. The <tt>containsKey</tt> |
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* explicitly maps the key to <tt>null</tt>. The {@link #containsKey} |
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* operation may be used to distinguish these two cases. |
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* |
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* @param key key whose associated value is to be returned. |
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* @param key key whose associated value is to be returned |
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* @return the value to which this map maps the specified key, or |
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* <tt>null</tt> if the map contains no mapping for the key. |
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* @throws ClassCastException if key cannot be compared with the keys |
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* currently in the map. |
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* @throws NullPointerException if key is <tt>null</tt> and this map uses |
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* natural ordering, or its comparator does not tolerate |
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* <tt>null</tt> keys. |
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* |
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* @see #containsKey(Object) |
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* <tt>null</tt> if the map contains no mapping for the key |
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* @throws ClassCastException if the specified key cannot be compared |
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* with the keys currently in the map |
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* @throws NullPointerException if the specified key is null |
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* and this map uses natural ordering, or its comparator |
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* does not permit null keys |
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*/ |
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public V get(Object key) { |
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Entry<K,V> p = getEntry(key); |
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return (p==null ? null : p.value); |
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} |
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|
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/** |
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* Returns the comparator used to order this map, or <tt>null</tt> if this |
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* map uses its keys' natural order. |
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* |
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* @return the comparator associated with this sorted map, or |
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* <tt>null</tt> if it uses its keys' natural sort method. |
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*/ |
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public Comparator<? super K> comparator() { |
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return comparator; |
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} |
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|
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/** |
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* Returns the first (lowest) key currently in this sorted map. |
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* |
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* @return the first (lowest) key currently in this sorted map. |
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* @throws NoSuchElementException Map is empty. |
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* @throws NoSuchElementException {@inheritDoc} |
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*/ |
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public K firstKey() { |
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return key(getFirstEntry()); |
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} |
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|
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/** |
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* Returns the last (highest) key currently in this sorted map. |
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* |
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* @return the last (highest) key currently in this sorted map. |
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* @throws NoSuchElementException Map is empty. |
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* @throws NoSuchElementException {@inheritDoc} |
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*/ |
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public K lastKey() { |
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return key(getLastEntry()); |
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} |
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|
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/** |
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* Copies all of the mappings from the specified map to this map. These |
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* mappings replace any mappings that this map had for any of the keys |
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* currently in the specified map. |
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* |
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* @param map mappings to be stored in this map. |
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* @throws ClassCastException class of a key or value in the specified |
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* map prevents it from being stored in this map. |
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* |
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* @throws NullPointerException if the given map is <tt>null</tt> or |
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* this map does not permit <tt>null</tt> keys and a |
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* key in the specified map is <tt>null</tt>. |
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* Copies all of the mappings from the specified map to this map. |
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* These mappings replace any mappings that this map had for any |
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* of the keys currently in the specified map. |
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* |
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* @param map mappings to be stored in this map |
297 |
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* @throws ClassCastException if the class of a key or value in |
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* the specified map prevents it from being stored in this map |
299 |
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* @throws NullPointerException if the specified map is null or |
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* the specified map contains a null key and this map does not |
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* permit null keys |
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*/ |
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public void putAll(Map<? extends K, ? extends V> map) { |
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int mapSize = map.size(); |
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* does not contain an entry for the key. |
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* |
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* @return this map's entry for the given key, or <tt>null</tt> if the map |
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* does not contain an entry for the key. |
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* @throws ClassCastException if the key cannot be compared with the keys |
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* currently in the map. |
329 |
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* @throws NullPointerException if key is <tt>null</tt> and this map uses |
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* natural order, or its comparator does not tolerate * |
331 |
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* <tt>null</tt> keys. |
326 |
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* does not contain an entry for the key |
327 |
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* @throws ClassCastException if the specified key cannot be compared |
328 |
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* with the keys currently in the map |
329 |
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* @throws NullPointerException if the specified key is null |
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* and this map uses natural ordering, or its comparator |
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* does not permit null keys |
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*/ |
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private Entry<K,V> getEntry(Object key) { |
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// Offload comparator-based version for sake of performance |
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if (comparator != null) |
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return getEntryUsingComparator(key); |
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Comparable<K> k = (Comparable<K>) key; |
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Comparable<? super K> k = (Comparable<? super K>) key; |
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Entry<K,V> p = root; |
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while (p != null) { |
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int cmp = k.compareTo(p.key); |
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} |
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|
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/** |
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* Returns the key corresponding to the specified Entry. Throw |
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* NoSuchElementException if the Entry is <tt>null</tt>. |
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* Returns the key corresponding to the specified Entry. |
512 |
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* @throws NoSuchElementException if the Entry is null |
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*/ |
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private static <K> K key(Entry<K,?> e) { |
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if (e==null) |
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* If the map previously contained a mapping for this key, the old |
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* value is replaced. |
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* |
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* @param key key with which the specified value is to be associated. |
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* @param value value to be associated with the specified key. |
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* @param key key with which the specified value is to be associated |
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* @param value value to be associated with the specified key |
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* |
528 |
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* @return the previous value associated with specified key, or <tt>null</tt> |
529 |
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* if there was no mapping for key. A <tt>null</tt> return can |
530 |
< |
* also indicate that the map previously associated <tt>null</tt> |
531 |
< |
* with the specified key. |
532 |
< |
* @throws ClassCastException if key cannot be compared with the keys |
533 |
< |
* currently in the map. |
534 |
< |
* @throws NullPointerException if key is <tt>null</tt> and this map uses |
535 |
< |
* natural order, or its comparator does not tolerate |
536 |
< |
* <tt>null</tt> keys. |
528 |
> |
* @return the previous value associated with <tt>key</tt>, or |
529 |
> |
* <tt>null</tt> if there was no mapping for <tt>key</tt>. |
530 |
> |
* (A <tt>null</tt> return can also indicate that the map |
531 |
> |
* previously associated <tt>null</tt> with <tt>key</tt>.) |
532 |
> |
* @throws ClassCastException if the specified key cannot be compared |
533 |
> |
* with the keys currently in the map |
534 |
> |
* @throws NullPointerException if the specified key is null |
535 |
> |
* and this map uses natural ordering, or its comparator |
536 |
> |
* does not permit null keys |
537 |
|
*/ |
538 |
|
public V put(K key, V value) { |
539 |
|
Entry<K,V> t = root; |
540 |
|
|
541 |
|
if (t == null) { |
542 |
+ |
if (key == null) { |
543 |
+ |
if (comparator == null) |
544 |
+ |
throw new NullPointerException(); |
545 |
+ |
comparator.compare(key, key); |
546 |
+ |
} |
547 |
|
incrementSize(); |
548 |
|
root = new Entry<K,V>(key, value, null); |
549 |
|
return null; |
550 |
< |
} |
550 |
> |
} |
551 |
|
|
552 |
|
while (true) { |
553 |
|
int cmp = compare(key, t.key); |
579 |
|
* Removes the mapping for this key from this TreeMap if present. |
580 |
|
* |
581 |
|
* @param key key for which mapping should be removed |
582 |
< |
* @return the previous value associated with specified key, or <tt>null</tt> |
583 |
< |
* if there was no mapping for key. A <tt>null</tt> return can |
584 |
< |
* also indicate that the map previously associated |
585 |
< |
* <tt>null</tt> with the specified key. |
586 |
< |
* |
587 |
< |
* @throws ClassCastException if key cannot be compared with the keys |
588 |
< |
* currently in the map. |
589 |
< |
* @throws NullPointerException if key is <tt>null</tt> and this map uses |
590 |
< |
* natural order, or its comparator does not tolerate |
603 |
< |
* <tt>null</tt> keys. |
582 |
> |
* @return the previous value associated with <tt>key</tt>, or |
583 |
> |
* <tt>null</tt> if there was no mapping for <tt>key</tt>. |
584 |
> |
* (A <tt>null</tt> return can also indicate that the map |
585 |
> |
* previously associated <tt>null</tt> with <tt>key</tt>.) |
586 |
> |
* @throws ClassCastException if the specified key cannot be compared |
587 |
> |
* with the keys currently in the map |
588 |
> |
* @throws NullPointerException if the specified key is null |
589 |
> |
* and this map uses natural ordering, or its comparator |
590 |
> |
* does not permit null keys |
591 |
|
*/ |
592 |
|
public V remove(Object key) { |
593 |
|
Entry<K,V> p = getEntry(key); |
600 |
|
} |
601 |
|
|
602 |
|
/** |
603 |
< |
* Removes all mappings from this TreeMap. |
603 |
> |
* Removes all of the mappings from this map. |
604 |
> |
* The map will be empty after this call returns. |
605 |
|
*/ |
606 |
|
public void clear() { |
607 |
|
modCount++; |
613 |
|
* Returns a shallow copy of this <tt>TreeMap</tt> instance. (The keys and |
614 |
|
* values themselves are not cloned.) |
615 |
|
* |
616 |
< |
* @return a shallow copy of this Map. |
616 |
> |
* @return a shallow copy of this map |
617 |
|
*/ |
618 |
|
public Object clone() { |
619 |
|
TreeMap<K,V> clone = null; |
643 |
|
|
644 |
|
// NavigableMap API methods |
645 |
|
|
658 |
– |
/** |
659 |
– |
* Returns a key-value mapping associated with the least |
660 |
– |
* key in this map, or <tt>null</tt> if the map is empty. |
661 |
– |
* |
662 |
– |
* @return an Entry with least key, or <tt>null</tt> |
663 |
– |
* if the map is empty. |
664 |
– |
*/ |
646 |
|
public Map.Entry<K,V> firstEntry() { |
647 |
|
Entry<K,V> e = getFirstEntry(); |
648 |
< |
return (e == null)? null : new AbstractMap.SimpleImmutableEntry(e); |
648 |
> |
return (e == null)? null : new AbstractMap.SimpleImmutableEntry<K,V>(e); |
649 |
|
} |
650 |
|
|
670 |
– |
/** |
671 |
– |
* Returns a key-value mapping associated with the greatest |
672 |
– |
* key in this map, or <tt>null</tt> if the map is empty. |
673 |
– |
* |
674 |
– |
* @return an Entry with greatest key, or <tt>null</tt> |
675 |
– |
* if the map is empty. |
676 |
– |
*/ |
651 |
|
public Map.Entry<K,V> lastEntry() { |
652 |
|
Entry<K,V> e = getLastEntry(); |
653 |
< |
return (e == null)? null : new AbstractMap.SimpleImmutableEntry(e); |
653 |
> |
return (e == null)? null : new AbstractMap.SimpleImmutableEntry<K,V>(e); |
654 |
|
} |
655 |
|
|
682 |
– |
/** |
683 |
– |
* Removes and returns a key-value mapping associated with |
684 |
– |
* the least key in this map, or <tt>null</tt> if the map is empty. |
685 |
– |
* |
686 |
– |
* @return the removed first entry of this map, or <tt>null</tt> |
687 |
– |
* if the map is empty. |
688 |
– |
*/ |
656 |
|
public Map.Entry<K,V> pollFirstEntry() { |
657 |
|
Entry<K,V> p = getFirstEntry(); |
658 |
< |
if (p == null) |
658 |
> |
if (p == null) |
659 |
|
return null; |
660 |
< |
Map.Entry result = new AbstractMap.SimpleImmutableEntry(p); |
660 |
> |
Map.Entry<K,V> result = new AbstractMap.SimpleImmutableEntry<K,V>(p); |
661 |
|
deleteEntry(p); |
662 |
|
return result; |
663 |
|
} |
664 |
|
|
698 |
– |
/** |
699 |
– |
* Removes and returns a key-value mapping associated with |
700 |
– |
* the greatest key in this map, or <tt>null</tt> if the map is empty. |
701 |
– |
* |
702 |
– |
* @return the removed last entry of this map, or <tt>null</tt> |
703 |
– |
* if the map is empty. |
704 |
– |
*/ |
665 |
|
public Map.Entry<K,V> pollLastEntry() { |
666 |
|
Entry<K,V> p = getLastEntry(); |
667 |
< |
if (p == null) |
667 |
> |
if (p == null) |
668 |
|
return null; |
669 |
< |
Map.Entry result = new AbstractMap.SimpleImmutableEntry(p); |
669 |
> |
Map.Entry<K,V> result = new AbstractMap.SimpleImmutableEntry<K,V>(p); |
670 |
|
deleteEntry(p); |
671 |
|
return result; |
672 |
|
} |
673 |
|
|
674 |
|
/** |
675 |
< |
* Returns a key-value mapping associated with the least key |
676 |
< |
* greater than or equal to the given key, or <tt>null</tt> if |
677 |
< |
* there is no such entry. |
678 |
< |
* |
719 |
< |
* @param key the key. |
720 |
< |
* @return an Entry associated with ceiling of given key, or |
721 |
< |
* <tt>null</tt> if there is no such Entry. |
722 |
< |
* @throws ClassCastException if key cannot be compared with the |
723 |
< |
* keys currently in the map. |
724 |
< |
* @throws NullPointerException if key is <tt>null</tt> and this map uses |
725 |
< |
* natural order, or its comparator does not tolerate |
726 |
< |
* <tt>null</tt> keys. |
675 |
> |
* @throws ClassCastException {@inheritDoc} |
676 |
> |
* @throws NullPointerException if the specified key is null |
677 |
> |
* and this map uses natural ordering, or its comparator |
678 |
> |
* does not permit null keys |
679 |
|
*/ |
680 |
< |
public Map.Entry<K,V> ceilingEntry(K key) { |
681 |
< |
Entry<K,V> e = getCeilingEntry(key); |
682 |
< |
return (e == null)? null : new AbstractMap.SimpleImmutableEntry(e); |
680 |
> |
public Map.Entry<K,V> lowerEntry(K key) { |
681 |
> |
Entry<K,V> e = getLowerEntry(key); |
682 |
> |
return (e == null)? null : new AbstractMap.SimpleImmutableEntry<K,V>(e); |
683 |
|
} |
684 |
|
|
733 |
– |
|
685 |
|
/** |
686 |
< |
* Returns least key greater than or equal to the given key, or |
687 |
< |
* <tt>null</tt> if there is no such key. |
688 |
< |
* |
689 |
< |
* @param key the key. |
739 |
< |
* @return the ceiling key, or <tt>null</tt> |
740 |
< |
* if there is no such key. |
741 |
< |
* @throws ClassCastException if key cannot be compared with the keys |
742 |
< |
* currently in the map. |
743 |
< |
* @throws NullPointerException if key is <tt>null</tt> and this map uses |
744 |
< |
* natural order, or its comparator does not tolerate |
745 |
< |
* <tt>null</tt> keys. |
686 |
> |
* @throws ClassCastException {@inheritDoc} |
687 |
> |
* @throws NullPointerException if the specified key is null |
688 |
> |
* and this map uses natural ordering, or its comparator |
689 |
> |
* does not permit null keys |
690 |
|
*/ |
691 |
< |
public K ceilingKey(K key) { |
692 |
< |
Entry<K,V> e = getCeilingEntry(key); |
691 |
> |
public K lowerKey(K key) { |
692 |
> |
Entry<K,V> e = getLowerEntry(key); |
693 |
|
return (e == null)? null : e.key; |
694 |
|
} |
695 |
|
|
752 |
– |
|
753 |
– |
|
696 |
|
/** |
697 |
< |
* Returns a key-value mapping associated with the greatest key |
698 |
< |
* less than or equal to the given key, or <tt>null</tt> if there |
699 |
< |
* is no such entry. |
700 |
< |
* |
759 |
< |
* @param key the key. |
760 |
< |
* @return an Entry associated with floor of given key, or <tt>null</tt> |
761 |
< |
* if there is no such Entry. |
762 |
< |
* @throws ClassCastException if key cannot be compared with the keys |
763 |
< |
* currently in the map. |
764 |
< |
* @throws NullPointerException if key is <tt>null</tt> and this map uses |
765 |
< |
* natural order, or its comparator does not tolerate |
766 |
< |
* <tt>null</tt> keys. |
697 |
> |
* @throws ClassCastException {@inheritDoc} |
698 |
> |
* @throws NullPointerException if the specified key is null |
699 |
> |
* and this map uses natural ordering, or its comparator |
700 |
> |
* does not permit null keys |
701 |
|
*/ |
702 |
|
public Map.Entry<K,V> floorEntry(K key) { |
703 |
|
Entry<K,V> e = getFloorEntry(key); |
704 |
< |
return (e == null)? null : new AbstractMap.SimpleImmutableEntry(e); |
704 |
> |
return (e == null)? null : new AbstractMap.SimpleImmutableEntry<K,V>(e); |
705 |
|
} |
706 |
|
|
707 |
|
/** |
708 |
< |
* Returns the greatest key |
709 |
< |
* less than or equal to the given key, or <tt>null</tt> if there |
710 |
< |
* is no such key. |
711 |
< |
* |
778 |
< |
* @param key the key. |
779 |
< |
* @return the floor of given key, or <tt>null</tt> if there is no |
780 |
< |
* such key. |
781 |
< |
* @throws ClassCastException if key cannot be compared with the keys |
782 |
< |
* currently in the map. |
783 |
< |
* @throws NullPointerException if key is <tt>null</tt> and this map uses |
784 |
< |
* natural order, or its comparator does not tolerate |
785 |
< |
* <tt>null</tt> keys. |
708 |
> |
* @throws ClassCastException {@inheritDoc} |
709 |
> |
* @throws NullPointerException if the specified key is null |
710 |
> |
* and this map uses natural ordering, or its comparator |
711 |
> |
* does not permit null keys |
712 |
|
*/ |
713 |
|
public K floorKey(K key) { |
714 |
|
Entry<K,V> e = getFloorEntry(key); |
716 |
|
} |
717 |
|
|
718 |
|
/** |
719 |
< |
* Returns a key-value mapping associated with the least key |
720 |
< |
* strictly greater than the given key, or <tt>null</tt> if there |
721 |
< |
* is no such entry. |
722 |
< |
* |
797 |
< |
* @param key the key. |
798 |
< |
* @return an Entry with least key greater than the given key, or |
799 |
< |
* <tt>null</tt> if there is no such Entry. |
800 |
< |
* @throws ClassCastException if key cannot be compared with the keys |
801 |
< |
* currently in the map. |
802 |
< |
* @throws NullPointerException if key is <tt>null</tt> and this map uses |
803 |
< |
* natural order, or its comparator does not tolerate |
804 |
< |
* <tt>null</tt> keys. |
719 |
> |
* @throws ClassCastException {@inheritDoc} |
720 |
> |
* @throws NullPointerException if the specified key is null |
721 |
> |
* and this map uses natural ordering, or its comparator |
722 |
> |
* does not permit null keys |
723 |
|
*/ |
724 |
< |
public Map.Entry<K,V> higherEntry(K key) { |
725 |
< |
Entry<K,V> e = getHigherEntry(key); |
726 |
< |
return (e == null)? null : new AbstractMap.SimpleImmutableEntry(e); |
724 |
> |
public Map.Entry<K,V> ceilingEntry(K key) { |
725 |
> |
Entry<K,V> e = getCeilingEntry(key); |
726 |
> |
return (e == null)? null : new AbstractMap.SimpleImmutableEntry<K,V>(e); |
727 |
|
} |
728 |
|
|
729 |
|
/** |
730 |
< |
* Returns the least key strictly greater than the given key, or |
731 |
< |
* <tt>null</tt> if there is no such key. |
732 |
< |
* |
733 |
< |
* @param key the key. |
816 |
< |
* @return the least key greater than the given key, or |
817 |
< |
* <tt>null</tt> if there is no such key. |
818 |
< |
* @throws ClassCastException if key cannot be compared with the keys |
819 |
< |
* currently in the map. |
820 |
< |
* @throws NullPointerException if key is <tt>null</tt> and this map uses |
821 |
< |
* natural order, or its comparator does not tolerate |
822 |
< |
* <tt>null</tt> keys. |
730 |
> |
* @throws ClassCastException {@inheritDoc} |
731 |
> |
* @throws NullPointerException if the specified key is null |
732 |
> |
* and this map uses natural ordering, or its comparator |
733 |
> |
* does not permit null keys |
734 |
|
*/ |
735 |
< |
public K higherKey(K key) { |
736 |
< |
Entry<K,V> e = getHigherEntry(key); |
735 |
> |
public K ceilingKey(K key) { |
736 |
> |
Entry<K,V> e = getCeilingEntry(key); |
737 |
|
return (e == null)? null : e.key; |
738 |
|
} |
739 |
|
|
740 |
|
/** |
741 |
< |
* Returns a key-value mapping associated with the greatest |
742 |
< |
* key strictly less than the given key, or <tt>null</tt> if there is no |
743 |
< |
* such entry. |
744 |
< |
* |
834 |
< |
* @param key the key. |
835 |
< |
* @return an Entry with greatest key less than the given |
836 |
< |
* key, or <tt>null</tt> if there is no such Entry. |
837 |
< |
* @throws ClassCastException if key cannot be compared with the keys |
838 |
< |
* currently in the map. |
839 |
< |
* @throws NullPointerException if key is <tt>null</tt> and this map uses |
840 |
< |
* natural order, or its comparator does not tolerate |
841 |
< |
* <tt>null</tt> keys. |
741 |
> |
* @throws ClassCastException {@inheritDoc} |
742 |
> |
* @throws NullPointerException if the specified key is null |
743 |
> |
* and this map uses natural ordering, or its comparator |
744 |
> |
* does not permit null keys |
745 |
|
*/ |
746 |
< |
public Map.Entry<K,V> lowerEntry(K key) { |
747 |
< |
Entry<K,V> e = getLowerEntry(key); |
748 |
< |
return (e == null)? null : new AbstractMap.SimpleImmutableEntry(e); |
746 |
> |
public Map.Entry<K,V> higherEntry(K key) { |
747 |
> |
Entry<K,V> e = getHigherEntry(key); |
748 |
> |
return (e == null)? null : new AbstractMap.SimpleImmutableEntry<K,V>(e); |
749 |
|
} |
750 |
|
|
751 |
|
/** |
752 |
< |
* Returns the greatest key strictly less than the given key, or |
753 |
< |
* <tt>null</tt> if there is no such key. |
754 |
< |
* |
755 |
< |
* @param key the key. |
853 |
< |
* @return the greatest key less than the given |
854 |
< |
* key, or <tt>null</tt> if there is no such key. |
855 |
< |
* @throws ClassCastException if key cannot be compared with the keys |
856 |
< |
* currently in the map. |
857 |
< |
* @throws NullPointerException if key is <tt>null</tt> and this map uses |
858 |
< |
* natural order, or its comparator does not tolerate |
859 |
< |
* <tt>null</tt> keys. |
752 |
> |
* @throws ClassCastException {@inheritDoc} |
753 |
> |
* @throws NullPointerException if the specified key is null |
754 |
> |
* and this map uses natural ordering, or its comparator |
755 |
> |
* does not permit null keys |
756 |
|
*/ |
757 |
< |
public K lowerKey(K key) { |
758 |
< |
Entry<K,V> e = getLowerEntry(key); |
757 |
> |
public K higherKey(K key) { |
758 |
> |
Entry<K,V> e = getHigherEntry(key); |
759 |
|
return (e == null)? null : e.key; |
760 |
|
} |
761 |
|
|
768 |
|
*/ |
769 |
|
private transient Set<Map.Entry<K,V>> entrySet = null; |
770 |
|
private transient Set<Map.Entry<K,V>> descendingEntrySet = null; |
771 |
< |
private transient Set<K> descendingKeySet = null; |
876 |
< |
|
877 |
< |
transient Set<K> keySet = null; // XXX remove when integrated |
878 |
< |
transient Collection<V> values = null; // XXX remove when integrated |
771 |
> |
private transient Set<K> descendingKeySet = null; |
772 |
|
|
773 |
|
/** |
774 |
< |
* Returns a Set view of the keys contained in this map. The set's |
775 |
< |
* iterator will return the keys in ascending order. The set is backed by |
776 |
< |
* this <tt>TreeMap</tt> instance, so changes to this map are reflected in |
777 |
< |
* the Set, and vice-versa. The Set supports element removal, which |
778 |
< |
* removes the corresponding mapping from the map, via the |
779 |
< |
* <tt>Iterator.remove</tt>, <tt>Set.remove</tt>, <tt>removeAll</tt>, |
780 |
< |
* <tt>retainAll</tt>, and <tt>clear</tt> operations. It does not support |
781 |
< |
* the <tt>add</tt> or <tt>addAll</tt> operations. |
782 |
< |
* |
783 |
< |
* @return a set view of the keys contained in this TreeMap. |
774 |
> |
* Returns a {@link Set} view of the keys contained in this map. |
775 |
> |
* The set's iterator returns the keys in ascending order. |
776 |
> |
* The set is backed by the map, so changes to the map are |
777 |
> |
* reflected in the set, and vice-versa. If the map is modified |
778 |
> |
* while an iteration over the set is in progress (except through |
779 |
> |
* the iterator's own <tt>remove</tt> operation), the results of |
780 |
> |
* the iteration are undefined. The set supports element removal, |
781 |
> |
* which removes the corresponding mapping from the map, via the |
782 |
> |
* <tt>Iterator.remove</tt>, <tt>Set.remove</tt>, |
783 |
> |
* <tt>removeAll</tt>, <tt>retainAll</tt>, and <tt>clear</tt> |
784 |
> |
* operations. It does not support the <tt>add</tt> or <tt>addAll</tt> |
785 |
> |
* operations. |
786 |
|
*/ |
787 |
|
public Set<K> keySet() { |
788 |
|
Set<K> ks = keySet; |
793 |
|
public Iterator<K> iterator() { |
794 |
|
return new KeyIterator(getFirstEntry()); |
795 |
|
} |
796 |
< |
|
796 |
> |
|
797 |
|
public int size() { |
798 |
|
return TreeMap.this.size(); |
799 |
|
} |
800 |
< |
|
800 |
> |
|
801 |
|
public boolean contains(Object o) { |
802 |
|
return containsKey(o); |
803 |
|
} |
804 |
< |
|
804 |
> |
|
805 |
|
public boolean remove(Object o) { |
806 |
|
int oldSize = size; |
807 |
|
TreeMap.this.remove(o); |
808 |
|
return size != oldSize; |
809 |
|
} |
810 |
< |
|
810 |
> |
|
811 |
|
public void clear() { |
812 |
|
TreeMap.this.clear(); |
813 |
|
} |
814 |
|
} |
815 |
|
|
816 |
|
/** |
817 |
< |
* Returns a collection view of the values contained in this map. The |
818 |
< |
* collection's iterator will return the values in the order that their |
819 |
< |
* corresponding keys appear in the tree. The collection is backed by |
820 |
< |
* this <tt>TreeMap</tt> instance, so changes to this map are reflected in |
821 |
< |
* the collection, and vice-versa. The collection supports element |
822 |
< |
* removal, which removes the corresponding mapping from the map through |
823 |
< |
* the <tt>Iterator.remove</tt>, <tt>Collection.remove</tt>, |
824 |
< |
* <tt>removeAll</tt>, <tt>retainAll</tt>, and <tt>clear</tt> operations. |
825 |
< |
* It does not support the <tt>add</tt> or <tt>addAll</tt> operations. |
826 |
< |
* |
827 |
< |
* @return a collection view of the values contained in this map. |
817 |
> |
* Returns a {@link Collection} view of the values contained in this map. |
818 |
> |
* The collection's iterator returns the values in ascending order |
819 |
> |
* of the corresponding keys. |
820 |
> |
* The collection is backed by the map, so changes to the map are |
821 |
> |
* reflected in the collection, and vice-versa. If the map is |
822 |
> |
* modified while an iteration over the collection is in progress |
823 |
> |
* (except through the iterator's own <tt>remove</tt> operation), |
824 |
> |
* the results of the iteration are undefined. The collection |
825 |
> |
* supports element removal, which removes the corresponding |
826 |
> |
* mapping from the map, via the <tt>Iterator.remove</tt>, |
827 |
> |
* <tt>Collection.remove</tt>, <tt>removeAll</tt>, |
828 |
> |
* <tt>retainAll</tt> and <tt>clear</tt> operations. It does not |
829 |
> |
* support the <tt>add</tt> or <tt>addAll</tt> operations. |
830 |
|
*/ |
831 |
|
public Collection<V> values() { |
832 |
|
Collection<V> vs = values; |
837 |
|
public Iterator<V> iterator() { |
838 |
|
return new ValueIterator(getFirstEntry()); |
839 |
|
} |
840 |
< |
|
840 |
> |
|
841 |
|
public int size() { |
842 |
|
return TreeMap.this.size(); |
843 |
|
} |
844 |
< |
|
844 |
> |
|
845 |
|
public boolean contains(Object o) { |
846 |
|
for (Entry<K,V> e = getFirstEntry(); e != null; e = successor(e)) |
847 |
|
if (valEquals(e.getValue(), o)) |
848 |
|
return true; |
849 |
|
return false; |
850 |
|
} |
851 |
< |
|
851 |
> |
|
852 |
|
public boolean remove(Object o) { |
853 |
|
for (Entry<K,V> e = getFirstEntry(); e != null; e = successor(e)) { |
854 |
|
if (valEquals(e.getValue(), o)) { |
858 |
|
} |
859 |
|
return false; |
860 |
|
} |
861 |
< |
|
861 |
> |
|
862 |
|
public void clear() { |
863 |
|
TreeMap.this.clear(); |
864 |
|
} |
865 |
|
} |
866 |
|
|
867 |
|
/** |
868 |
< |
* Returns a set view of the mappings contained in this map. The set's |
869 |
< |
* iterator returns the mappings in ascending key order. Each element in |
870 |
< |
* the returned set is a <tt>Map.Entry</tt>. The set is backed by this |
871 |
< |
* map, so changes to this map are reflected in the set, and vice-versa. |
872 |
< |
* The set supports element removal, which removes the corresponding |
873 |
< |
* mapping from the TreeMap, through the <tt>Iterator.remove</tt>, |
868 |
> |
* Returns a {@link Set} view of the mappings contained in this map. |
869 |
> |
* The set's iterator returns the entries in ascending key order. |
870 |
> |
* The set is backed by the map, so changes to the map are |
871 |
> |
* reflected in the set, and vice-versa. If the map is modified |
872 |
> |
* while an iteration over the set is in progress (except through |
873 |
> |
* the iterator's own <tt>remove</tt> operation, or through the |
874 |
> |
* <tt>setValue</tt> operation on a map entry returned by the |
875 |
> |
* iterator) the results of the iteration are undefined. The set |
876 |
> |
* supports element removal, which removes the corresponding |
877 |
> |
* mapping from the map, via the <tt>Iterator.remove</tt>, |
878 |
|
* <tt>Set.remove</tt>, <tt>removeAll</tt>, <tt>retainAll</tt> and |
879 |
< |
* <tt>clear</tt> operations. It does not support the <tt>add</tt> or |
880 |
< |
* <tt>addAll</tt> operations. |
980 |
< |
* |
981 |
< |
* @return a set view of the mappings contained in this map. |
982 |
< |
* @see Map.Entry |
879 |
> |
* <tt>clear</tt> operations. It does not support the |
880 |
> |
* <tt>add</tt> or <tt>addAll</tt> operations. |
881 |
|
*/ |
882 |
|
public Set<Map.Entry<K,V>> entrySet() { |
883 |
|
Set<Map.Entry<K,V>> es = entrySet; |
888 |
|
public Iterator<Map.Entry<K,V>> iterator() { |
889 |
|
return new EntryIterator(getFirstEntry()); |
890 |
|
} |
891 |
< |
|
891 |
> |
|
892 |
|
public boolean contains(Object o) { |
893 |
|
if (!(o instanceof Map.Entry)) |
894 |
|
return false; |
897 |
|
Entry<K,V> p = getEntry(entry.getKey()); |
898 |
|
return p != null && valEquals(p.getValue(), value); |
899 |
|
} |
900 |
< |
|
900 |
> |
|
901 |
|
public boolean remove(Object o) { |
902 |
|
if (!(o instanceof Map.Entry)) |
903 |
|
return false; |
910 |
|
} |
911 |
|
return false; |
912 |
|
} |
913 |
< |
|
913 |
> |
|
914 |
|
public int size() { |
915 |
|
return TreeMap.this.size(); |
916 |
|
} |
917 |
< |
|
917 |
> |
|
918 |
|
public void clear() { |
919 |
|
TreeMap.this.clear(); |
920 |
|
} |
921 |
|
} |
922 |
|
|
1025 |
– |
/** |
1026 |
– |
* Returns a set view of the mappings contained in this map. The |
1027 |
– |
* set's iterator returns the mappings in descending key order. |
1028 |
– |
* Each element in the returned set is a <tt>Map.Entry</tt>. The |
1029 |
– |
* set is backed by this map, so changes to this map are reflected |
1030 |
– |
* in the set, and vice-versa. The set supports element removal, |
1031 |
– |
* which removes the corresponding mapping from the TreeMap, |
1032 |
– |
* through the <tt>Iterator.remove</tt>, <tt>Set.remove</tt>, |
1033 |
– |
* <tt>removeAll</tt>, <tt>retainAll</tt> and <tt>clear</tt> |
1034 |
– |
* operations. It does not support the <tt>add</tt> or |
1035 |
– |
* <tt>addAll</tt> operations. |
1036 |
– |
* |
1037 |
– |
* @return a set view of the mappings contained in this map, in |
1038 |
– |
* descending key order |
1039 |
– |
* @see Map.Entry |
1040 |
– |
*/ |
923 |
|
public Set<Map.Entry<K,V>> descendingEntrySet() { |
924 |
|
Set<Map.Entry<K,V>> es = descendingEntrySet; |
925 |
|
return (es != null) ? es : (descendingEntrySet = new DescendingEntrySet()); |
931 |
|
} |
932 |
|
} |
933 |
|
|
1052 |
– |
/** |
1053 |
– |
* Returns a Set view of the keys contained in this map. The |
1054 |
– |
* set's iterator will return the keys in descending order. The |
1055 |
– |
* map is backed by this <tt>TreeMap</tt> instance, so changes to |
1056 |
– |
* this map are reflected in the Set, and vice-versa. The Set |
1057 |
– |
* supports element removal, which removes the corresponding |
1058 |
– |
* mapping from the map, via the <tt>Iterator.remove</tt>, |
1059 |
– |
* <tt>Set.remove</tt>, <tt>removeAll</tt>, <tt>retainAll</tt>, |
1060 |
– |
* and <tt>clear</tt> operations. It does not support the |
1061 |
– |
* <tt>add</tt> or <tt>addAll</tt> operations. |
1062 |
– |
* |
1063 |
– |
* @return a set view of the keys contained in this TreeMap. |
1064 |
– |
*/ |
934 |
|
public Set<K> descendingKeySet() { |
935 |
|
Set<K> ks = descendingKeySet; |
936 |
|
return (ks != null) ? ks : (descendingKeySet = new DescendingKeySet()); |
943 |
|
} |
944 |
|
|
945 |
|
/** |
946 |
< |
* Returns a view of the portion of this map whose keys range from |
1078 |
< |
* <tt>fromKey</tt>, inclusive, to <tt>toKey</tt>, exclusive. (If |
1079 |
< |
* <tt>fromKey</tt> and <tt>toKey</tt> are equal, the returned |
1080 |
< |
* navigable map is empty.) The returned navigable map is backed |
1081 |
< |
* by this map, so changes in the returned navigable map are |
1082 |
< |
* reflected in this map, and vice-versa. The returned navigable |
1083 |
< |
* map supports all optional map operations.<p> |
1084 |
< |
* |
1085 |
< |
* The navigable map returned by this method will throw an |
1086 |
< |
* <tt>IllegalArgumentException</tt> if the user attempts to insert a key |
1087 |
< |
* less than <tt>fromKey</tt> or greater than or equal to |
1088 |
< |
* <tt>toKey</tt>.<p> |
1089 |
< |
* |
1090 |
< |
* Note: this method always returns a <i>half-open range</i> (which |
1091 |
< |
* includes its low endpoint but not its high endpoint). If you need a |
1092 |
< |
* <i>closed range</i> (which includes both endpoints), and the key type |
1093 |
< |
* allows for calculation of the successor of a given key, merely request the |
1094 |
< |
* subrange from <tt>lowEndpoint</tt> to <tt>successor(highEndpoint)</tt>. |
1095 |
< |
* For example, suppose that <tt>m</tt> is a navigable map whose keys are |
1096 |
< |
* strings. The following idiom obtains a view containing all of the |
1097 |
< |
* key-value mappings in <tt>m</tt> whose keys are between <tt>low</tt> |
1098 |
< |
* and <tt>high</tt>, inclusive: |
1099 |
< |
* <pre> NavigableMap sub = m.navigableSubMap(low, high+"\0");</pre> |
1100 |
< |
* A similar technique can be used to generate an <i>open range</i> (which |
1101 |
< |
* contains neither endpoint). The following idiom obtains a view |
1102 |
< |
* containing all of the key-value mappings in <tt>m</tt> whose keys are |
1103 |
< |
* between <tt>low</tt> and <tt>high</tt>, exclusive: |
1104 |
< |
* <pre> NavigableMap sub = m.navigableSubMap(low+"\0", high);</pre> |
1105 |
< |
* |
1106 |
< |
* @param fromKey low endpoint (inclusive) of the subMap. |
1107 |
< |
* @param toKey high endpoint (exclusive) of the subMap. |
1108 |
< |
* |
1109 |
< |
* @return a view of the portion of this map whose keys range from |
1110 |
< |
* <tt>fromKey</tt>, inclusive, to <tt>toKey</tt>, exclusive. |
1111 |
< |
* |
1112 |
< |
* @throws ClassCastException if <tt>fromKey</tt> and <tt>toKey</tt> |
1113 |
< |
* cannot be compared to one another using this map's comparator |
1114 |
< |
* (or, if the map has no comparator, using natural ordering). |
1115 |
< |
* @throws IllegalArgumentException if <tt>fromKey</tt> is greater than |
1116 |
< |
* <tt>toKey</tt>. |
946 |
> |
* @throws ClassCastException {@inheritDoc} |
947 |
|
* @throws NullPointerException if <tt>fromKey</tt> or <tt>toKey</tt> is |
948 |
< |
* <tt>null</tt> and this map uses natural order, or its |
949 |
< |
* comparator does not tolerate <tt>null</tt> keys. |
948 |
> |
* null and this map uses natural ordering, or its comparator |
949 |
> |
* does not permit null keys |
950 |
> |
* @throws IllegalArgumentException {@inheritDoc} |
951 |
|
*/ |
952 |
|
public NavigableMap<K,V> navigableSubMap(K fromKey, K toKey) { |
953 |
|
return new SubMap(fromKey, toKey); |
954 |
|
} |
955 |
|
|
1125 |
– |
|
956 |
|
/** |
957 |
< |
* Returns a view of the portion of this map whose keys are strictly less |
958 |
< |
* than <tt>toKey</tt>. The returned navigable map is backed by this map, so |
959 |
< |
* changes in the returned navigable map are reflected in this map, and |
960 |
< |
* vice-versa. The returned navigable map supports all optional map |
961 |
< |
* operations.<p> |
1132 |
< |
* |
1133 |
< |
* The navigable map returned by this method will throw an |
1134 |
< |
* <tt>IllegalArgumentException</tt> if the user attempts to insert a key |
1135 |
< |
* greater than or equal to <tt>toKey</tt>.<p> |
1136 |
< |
* |
1137 |
< |
* Note: this method always returns a view that does not contain its |
1138 |
< |
* (high) endpoint. If you need a view that does contain this endpoint, |
1139 |
< |
* and the key type allows for calculation of the successor of a given key, |
1140 |
< |
* merely request a headMap bounded by <tt>successor(highEndpoint)</tt>. |
1141 |
< |
* For example, suppose that suppose that <tt>m</tt> is a navigable map whose |
1142 |
< |
* keys are strings. The following idiom obtains a view containing all of |
1143 |
< |
* the key-value mappings in <tt>m</tt> whose keys are less than or equal |
1144 |
< |
* to <tt>high</tt>: |
1145 |
< |
* <pre> |
1146 |
< |
* NavigableMap head = m.navigableHeadMap(high+"\0"); |
1147 |
< |
* </pre> |
1148 |
< |
* |
1149 |
< |
* @param toKey high endpoint (exclusive) of the headMap. |
1150 |
< |
* @return a view of the portion of this map whose keys are strictly |
1151 |
< |
* less than <tt>toKey</tt>. |
1152 |
< |
* |
1153 |
< |
* @throws ClassCastException if <tt>toKey</tt> is not compatible |
1154 |
< |
* with this map's comparator (or, if the map has no comparator, |
1155 |
< |
* if <tt>toKey</tt> does not implement <tt>Comparable</tt>). |
1156 |
< |
* @throws IllegalArgumentException if this map is itself a subMap, |
1157 |
< |
* headMap, or tailMap, and <tt>toKey</tt> is not within the |
1158 |
< |
* specified range of the subMap, headMap, or tailMap. |
1159 |
< |
* @throws NullPointerException if <tt>toKey</tt> is <tt>null</tt> and |
1160 |
< |
* this map uses natural order, or its comparator does not |
1161 |
< |
* tolerate <tt>null</tt> keys. |
957 |
> |
* @throws ClassCastException {@inheritDoc} |
958 |
> |
* @throws NullPointerException if <tt>toKey</tt> is null |
959 |
> |
* and this map uses natural ordering, or its comparator |
960 |
> |
* does not permit null keys |
961 |
> |
* @throws IllegalArgumentException {@inheritDoc} |
962 |
|
*/ |
963 |
|
public NavigableMap<K,V> navigableHeadMap(K toKey) { |
964 |
|
return new SubMap(toKey, true); |
965 |
|
} |
966 |
|
|
967 |
|
/** |
968 |
< |
* Returns a view of the portion of this map whose keys are greater than |
969 |
< |
* or equal to <tt>fromKey</tt>. The returned navigable map is backed by |
970 |
< |
* this map, so changes in the returned navigable map are reflected in this |
971 |
< |
* map, and vice-versa. The returned navigable map supports all optional map |
972 |
< |
* operations.<p> |
1173 |
< |
* |
1174 |
< |
* The navigable map returned by this method will throw an |
1175 |
< |
* <tt>IllegalArgumentException</tt> if the user attempts to insert a key |
1176 |
< |
* less than <tt>fromKey</tt>.<p> |
1177 |
< |
* |
1178 |
< |
* Note: this method always returns a view that contains its (low) |
1179 |
< |
* endpoint. If you need a view that does not contain this endpoint, and |
1180 |
< |
* the element type allows for calculation of the successor of a given value, |
1181 |
< |
* merely request a tailMap bounded by <tt>successor(lowEndpoint)</tt>. |
1182 |
< |
* For example, suppose that <tt>m</tt> is a navigable map whose keys |
1183 |
< |
* are strings. The following idiom obtains a view containing |
1184 |
< |
* all of the key-value mappings in <tt>m</tt> whose keys are strictly |
1185 |
< |
* greater than <tt>low</tt>: <pre> |
1186 |
< |
* NavigableMap tail = m.navigableTailMap(low+"\0"); |
1187 |
< |
* </pre> |
1188 |
< |
* |
1189 |
< |
* @param fromKey low endpoint (inclusive) of the tailMap. |
1190 |
< |
* @return a view of the portion of this map whose keys are greater |
1191 |
< |
* than or equal to <tt>fromKey</tt>. |
1192 |
< |
* @throws ClassCastException if <tt>fromKey</tt> is not compatible |
1193 |
< |
* with this map's comparator (or, if the map has no comparator, |
1194 |
< |
* if <tt>fromKey</tt> does not implement <tt>Comparable</tt>). |
1195 |
< |
* @throws IllegalArgumentException if this map is itself a subMap, |
1196 |
< |
* headMap, or tailMap, and <tt>fromKey</tt> is not within the |
1197 |
< |
* specified range of the subMap, headMap, or tailMap. |
1198 |
< |
* @throws NullPointerException if <tt>fromKey</tt> is <tt>null</tt> and |
1199 |
< |
* this map uses natural order, or its comparator does not |
1200 |
< |
* tolerate <tt>null</tt> keys. |
968 |
> |
* @throws ClassCastException {@inheritDoc} |
969 |
> |
* @throws NullPointerException if <tt>fromKey</tt> is null |
970 |
> |
* and this map uses natural ordering, or its comparator |
971 |
> |
* does not permit null keys |
972 |
> |
* @throws IllegalArgumentException {@inheritDoc} |
973 |
|
*/ |
974 |
|
public NavigableMap<K,V> navigableTailMap(K fromKey) { |
975 |
|
return new SubMap(fromKey, false); |
976 |
|
} |
977 |
|
|
978 |
|
/** |
979 |
< |
* Equivalent to <tt>navigableSubMap</tt> but with a return |
980 |
< |
* type conforming to the <tt>SortedMap</tt> interface. |
981 |
< |
* @param fromKey low endpoint (inclusive) of the subMap. |
982 |
< |
* @param toKey high endpoint (exclusive) of the subMap. |
983 |
< |
* |
984 |
< |
* @return a view of the portion of this map whose keys range from |
1213 |
< |
* <tt>fromKey</tt>, inclusive, to <tt>toKey</tt>, exclusive. |
1214 |
< |
* |
1215 |
< |
* @throws ClassCastException if <tt>fromKey</tt> and <tt>toKey</tt> |
1216 |
< |
* cannot be compared to one another using this map's comparator |
1217 |
< |
* (or, if the map has no comparator, using natural ordering). |
1218 |
< |
* @throws IllegalArgumentException if <tt>fromKey</tt> is greater than |
1219 |
< |
* <tt>toKey</tt>. |
979 |
> |
* Equivalent to {@link #navigableSubMap} but with a return type |
980 |
> |
* conforming to the <tt>SortedMap</tt> interface. |
981 |
> |
* |
982 |
> |
* <p>{@inheritDoc} |
983 |
> |
* |
984 |
> |
* @throws ClassCastException {@inheritDoc} |
985 |
|
* @throws NullPointerException if <tt>fromKey</tt> or <tt>toKey</tt> is |
986 |
< |
* <tt>null</tt> and this map uses natural order, or its |
987 |
< |
* comparator does not tolerate <tt>null</tt> keys. |
986 |
> |
* null and this map uses natural ordering, or its comparator |
987 |
> |
* does not permit null keys |
988 |
> |
* @throws IllegalArgumentException {@inheritDoc} |
989 |
|
*/ |
990 |
|
public SortedMap<K,V> subMap(K fromKey, K toKey) { |
991 |
|
return new SubMap(fromKey, toKey); |
992 |
|
} |
993 |
|
|
1228 |
– |
|
994 |
|
/** |
995 |
< |
* Equivalent to <tt>navigableHeadMap</tt> but with a return |
996 |
< |
* type conforming to the <tt>SortedMap</tt> interface. |
995 |
> |
* Equivalent to {@link #navigableHeadMap} but with a return type |
996 |
> |
* conforming to the <tt>SortedMap</tt> interface. |
997 |
> |
* |
998 |
> |
* <p>{@inheritDoc} |
999 |
|
* |
1000 |
< |
* @param toKey high endpoint (exclusive) of the headMap. |
1001 |
< |
* @return a view of the portion of this map whose keys are strictly |
1002 |
< |
* less than <tt>toKey</tt>. |
1003 |
< |
* |
1004 |
< |
* @throws ClassCastException if <tt>toKey</tt> is not compatible |
1238 |
< |
* with this map's comparator (or, if the map has no comparator, |
1239 |
< |
* if <tt>toKey</tt> does not implement <tt>Comparable</tt>). |
1240 |
< |
* @throws IllegalArgumentException if this map is itself a subMap, |
1241 |
< |
* headMap, or tailMap, and <tt>toKey</tt> is not within the |
1242 |
< |
* specified range of the subMap, headMap, or tailMap. |
1243 |
< |
* @throws NullPointerException if <tt>toKey</tt> is <tt>null</tt> and |
1244 |
< |
* this map uses natural order, or its comparator does not |
1245 |
< |
* tolerate <tt>null</tt> keys. |
1000 |
> |
* @throws ClassCastException {@inheritDoc} |
1001 |
> |
* @throws NullPointerException if <tt>toKey</tt> is null |
1002 |
> |
* and this map uses natural ordering, or its comparator |
1003 |
> |
* does not permit null keys |
1004 |
> |
* @throws IllegalArgumentException {@inheritDoc} |
1005 |
|
*/ |
1006 |
|
public SortedMap<K,V> headMap(K toKey) { |
1007 |
|
return new SubMap(toKey, true); |
1008 |
|
} |
1009 |
|
|
1010 |
|
/** |
1011 |
< |
* Equivalent to <tt>navigableTailMap</tt> but with a return |
1012 |
< |
* type conforming to the <tt>SortedMap</tt> interface. |
1011 |
> |
* Equivalent to {@link #navigableTailMap} but with a return type |
1012 |
> |
* conforming to the <tt>SortedMap</tt> interface. |
1013 |
> |
* |
1014 |
> |
* <p>{@inheritDoc} |
1015 |
|
* |
1016 |
< |
* @param fromKey low endpoint (inclusive) of the tailMap. |
1017 |
< |
* @return a view of the portion of this map whose keys are greater |
1018 |
< |
* than or equal to <tt>fromKey</tt>. |
1019 |
< |
* @throws ClassCastException if <tt>fromKey</tt> is not compatible |
1020 |
< |
* with this map's comparator (or, if the map has no comparator, |
1260 |
< |
* if <tt>fromKey</tt> does not implement <tt>Comparable</tt>). |
1261 |
< |
* @throws IllegalArgumentException if this map is itself a subMap, |
1262 |
< |
* headMap, or tailMap, and <tt>fromKey</tt> is not within the |
1263 |
< |
* specified range of the subMap, headMap, or tailMap. |
1264 |
< |
* @throws NullPointerException if <tt>fromKey</tt> is <tt>null</tt> and |
1265 |
< |
* this map uses natural order, or its comparator does not |
1266 |
< |
* tolerate <tt>null</tt> keys. |
1016 |
> |
* @throws ClassCastException {@inheritDoc} |
1017 |
> |
* @throws NullPointerException if <tt>fromKey</tt> is null |
1018 |
> |
* and this map uses natural ordering, or its comparator |
1019 |
> |
* does not permit null keys |
1020 |
> |
* @throws IllegalArgumentException {@inheritDoc} |
1021 |
|
*/ |
1022 |
|
public SortedMap<K,V> tailMap(K fromKey) { |
1023 |
|
return new SubMap(fromKey, false); |
1095 |
|
TreeMap.Entry<K,V> e = fromStart ? getFirstEntry() : getCeilingEntry(fromKey); |
1096 |
|
K first = key(e); |
1097 |
|
if (!toEnd && compare(first, toKey) >= 0) |
1098 |
< |
throw(new NoSuchElementException()); |
1098 |
> |
throw new NoSuchElementException(); |
1099 |
|
return first; |
1100 |
|
} |
1101 |
|
|
1103 |
|
TreeMap.Entry<K,V> e = toEnd ? getLastEntry() : getLowerEntry(toKey); |
1104 |
|
K last = key(e); |
1105 |
|
if (!fromStart && compare(last, fromKey) < 0) |
1106 |
< |
throw(new NoSuchElementException()); |
1106 |
> |
throw new NoSuchElementException(); |
1107 |
|
return last; |
1108 |
|
} |
1109 |
|
|
1110 |
|
public Map.Entry<K,V> firstEntry() { |
1111 |
< |
TreeMap.Entry<K,V> e = fromStart ? |
1111 |
> |
TreeMap.Entry<K,V> e = fromStart ? |
1112 |
|
getFirstEntry() : getCeilingEntry(fromKey); |
1113 |
|
if (e == null || (!toEnd && compare(e.key, toKey) >= 0)) |
1114 |
|
return null; |
1116 |
|
} |
1117 |
|
|
1118 |
|
public Map.Entry<K,V> lastEntry() { |
1119 |
< |
TreeMap.Entry<K,V> e = toEnd ? |
1119 |
> |
TreeMap.Entry<K,V> e = toEnd ? |
1120 |
|
getLastEntry() : getLowerEntry(toKey); |
1121 |
|
if (e == null || (!fromStart && compare(e.key, fromKey) < 0)) |
1122 |
|
return null; |
1124 |
|
} |
1125 |
|
|
1126 |
|
public Map.Entry<K,V> pollFirstEntry() { |
1127 |
< |
TreeMap.Entry<K,V> e = fromStart ? |
1127 |
> |
TreeMap.Entry<K,V> e = fromStart ? |
1128 |
|
getFirstEntry() : getCeilingEntry(fromKey); |
1129 |
|
if (e == null || (!toEnd && compare(e.key, toKey) >= 0)) |
1130 |
|
return null; |
1131 |
< |
Map.Entry result = new AbstractMap.SimpleImmutableEntry(e); |
1131 |
> |
Map.Entry<K,V> result = new AbstractMap.SimpleImmutableEntry<K,V>(e); |
1132 |
|
deleteEntry(e); |
1133 |
|
return result; |
1134 |
|
} |
1135 |
|
|
1136 |
|
public Map.Entry<K,V> pollLastEntry() { |
1137 |
< |
TreeMap.Entry<K,V> e = toEnd ? |
1137 |
> |
TreeMap.Entry<K,V> e = toEnd ? |
1138 |
|
getLastEntry() : getLowerEntry(toKey); |
1139 |
|
if (e == null || (!fromStart && compare(e.key, fromKey) < 0)) |
1140 |
|
return null; |
1141 |
< |
Map.Entry result = new AbstractMap.SimpleImmutableEntry(e); |
1141 |
> |
Map.Entry<K,V> result = new AbstractMap.SimpleImmutableEntry<K,V>(e); |
1142 |
|
deleteEntry(e); |
1143 |
|
return result; |
1144 |
|
} |
1153 |
|
|
1154 |
|
public Map.Entry<K,V> ceilingEntry(K key) { |
1155 |
|
TreeMap.Entry<K,V> e = subceiling(key); |
1156 |
< |
return e == null? null : new AbstractMap.SimpleImmutableEntry(e); |
1156 |
> |
return e == null? null : new AbstractMap.SimpleImmutableEntry<K,V>(e); |
1157 |
|
} |
1158 |
|
|
1159 |
|
public K ceilingKey(K key) { |
1172 |
|
|
1173 |
|
public Map.Entry<K,V> higherEntry(K key) { |
1174 |
|
TreeMap.Entry<K,V> e = subhigher(key); |
1175 |
< |
return e == null? null : new AbstractMap.SimpleImmutableEntry(e); |
1175 |
> |
return e == null? null : new AbstractMap.SimpleImmutableEntry<K,V>(e); |
1176 |
|
} |
1177 |
|
|
1178 |
|
public K higherKey(K key) { |
1190 |
|
|
1191 |
|
public Map.Entry<K,V> floorEntry(K key) { |
1192 |
|
TreeMap.Entry<K,V> e = subfloor(key); |
1193 |
< |
return e == null? null : new AbstractMap.SimpleImmutableEntry(e); |
1193 |
> |
return e == null? null : new AbstractMap.SimpleImmutableEntry<K,V>(e); |
1194 |
|
} |
1195 |
|
|
1196 |
|
public K floorKey(K key) { |
1208 |
|
|
1209 |
|
public Map.Entry<K,V> lowerEntry(K key) { |
1210 |
|
TreeMap.Entry<K,V> e = sublower(key); |
1211 |
< |
return e == null? null : new AbstractMap.SimpleImmutableEntry(e); |
1211 |
> |
return e == null? null : new AbstractMap.SimpleImmutableEntry<K,V>(e); |
1212 |
|
} |
1213 |
|
|
1214 |
|
public K lowerKey(K key) { |
1277 |
|
} |
1278 |
|
|
1279 |
|
private transient Set<Map.Entry<K,V>> descendingEntrySetView = null; |
1280 |
< |
private transient Set<K> descendingKeySetView = null; |
1280 |
> |
private transient Set<K> descendingKeySetView = null; |
1281 |
|
|
1282 |
|
public Set<Map.Entry<K,V>> descendingEntrySet() { |
1283 |
|
Set<Map.Entry<K,V>> es = descendingEntrySetView; |
1284 |
< |
return (es != null) ? es : (descendingEntrySetView = new DescendingEntrySetView()); |
1284 |
> |
return (es != null) ? es : |
1285 |
> |
(descendingEntrySetView = new DescendingEntrySetView()); |
1286 |
|
} |
1287 |
|
|
1288 |
|
public Set<K> descendingKeySet() { |
1289 |
|
Set<K> ks = descendingKeySetView; |
1290 |
< |
return (ks != null) ? ks : (descendingKeySetView = new DescendingKeySetView()); |
1290 |
> |
return (ks != null) ? ks : |
1291 |
> |
(descendingKeySetView = new DescendingKeySetView()); |
1292 |
|
} |
1293 |
|
|
1294 |
|
private class DescendingEntrySetView extends EntrySetView { |
1303 |
|
public Iterator<K> iterator() { |
1304 |
|
return new Iterator<K>() { |
1305 |
|
private Iterator<Entry<K,V>> i = descendingEntrySet().iterator(); |
1306 |
< |
|
1306 |
> |
|
1307 |
|
public boolean hasNext() { return i.hasNext(); } |
1308 |
|
public K next() { return i.next().getKey(); } |
1309 |
|
public void remove() { i.remove(); } |
1310 |
|
}; |
1311 |
|
} |
1312 |
< |
|
1312 |
> |
|
1313 |
|
public int size() { |
1314 |
|
return SubMap.this.size(); |
1315 |
|
} |
1316 |
< |
|
1316 |
> |
|
1317 |
|
public boolean contains(Object k) { |
1318 |
|
return SubMap.this.containsKey(k); |
1319 |
|
} |
1320 |
|
} |
1321 |
|
|
1566 |
– |
|
1322 |
|
public NavigableMap<K,V> navigableSubMap(K fromKey, K toKey) { |
1323 |
|
if (!inRange2(fromKey)) |
1324 |
|
throw new IllegalArgumentException("fromKey out of range"); |
1339 |
|
return new SubMap(false, fromKey, toEnd, toKey); |
1340 |
|
} |
1341 |
|
|
1587 |
– |
|
1342 |
|
public SortedMap<K,V> subMap(K fromKey, K toKey) { |
1343 |
|
return navigableSubMap(fromKey, toKey); |
1344 |
|
} |
1379 |
|
return next != null; |
1380 |
|
} |
1381 |
|
|
1382 |
< |
Entry<K,V> nextEntry() { |
1382 |
> |
Entry<K,V> nextEntry() { |
1383 |
|
if (next == null) |
1384 |
|
throw new NoSuchElementException(); |
1385 |
|
if (modCount != expectedModCount) |
1406 |
|
EntryIterator(Entry<K,V> first) { |
1407 |
|
super(first); |
1408 |
|
} |
1655 |
– |
|
1409 |
|
public Map.Entry<K,V> next() { |
1410 |
|
return nextEntry(); |
1411 |
|
} |
1450 |
|
} |
1451 |
|
} |
1452 |
|
|
1700 |
– |
|
1453 |
|
/** |
1454 |
|
* Base for Descending Iterators. |
1455 |
|
*/ |
1510 |
|
|
1511 |
|
} |
1512 |
|
|
1761 |
– |
|
1513 |
|
/** |
1514 |
|
* Compares two keys using the correct comparison method for this TreeMap. |
1515 |
|
*/ |
1516 |
< |
private int compare(K k1, K k2) { |
1517 |
< |
return (comparator==null ? ((Comparable</*-*/K>)k1).compareTo(k2) |
1518 |
< |
: comparator.compare((K)k1, (K)k2)); |
1516 |
> |
private int compare(Object k1, Object k2) { |
1517 |
> |
return comparator==null ? ((Comparable<? super K>)k1).compareTo((K)k2) |
1518 |
> |
: comparator.compare((K)k1, (K)k2); |
1519 |
|
} |
1520 |
|
|
1521 |
|
/** |
1555 |
|
/** |
1556 |
|
* Returns the key. |
1557 |
|
* |
1558 |
< |
* @return the key. |
1558 |
> |
* @return the key |
1559 |
|
*/ |
1560 |
|
public K getKey() { |
1561 |
|
return key; |
1564 |
|
/** |
1565 |
|
* Returns the value associated with the key. |
1566 |
|
* |
1567 |
< |
* @return the value associated with the key. |
1567 |
> |
* @return the value associated with the key |
1568 |
|
*/ |
1569 |
|
public V getValue() { |
1570 |
|
return value; |
1575 |
|
* value. |
1576 |
|
* |
1577 |
|
* @return the value associated with the key before this method was |
1578 |
< |
* called. |
1578 |
> |
* called |
1579 |
|
*/ |
1580 |
|
public V setValue(V value) { |
1581 |
|
V oldValue = this.value; |
1914 |
|
// Write out size (number of Mappings) |
1915 |
|
s.writeInt(size); |
1916 |
|
|
2166 |
– |
Set<Map.Entry<K,V>> es = entrySet(); |
1917 |
|
// Write out keys and values (alternating) |
1918 |
< |
for (Iterator<Map.Entry<K,V>> i = es.iterator(); i.hasNext(); ) { |
1918 |
> |
for (Iterator<Map.Entry<K,V>> i = entrySet().iterator(); i.hasNext(); ) { |
1919 |
|
Map.Entry<K,V> e = i.next(); |
1920 |
|
s.writeObject(e.getKey()); |
1921 |
|
s.writeObject(e.getValue()); |
1946 |
|
} |
1947 |
|
|
1948 |
|
/** Intended to be called only from TreeSet.addAll **/ |
1949 |
< |
void addAllForTreeSet(SortedSet<Map.Entry<K,V>> set, V defaultVal) { |
1949 |
> |
void addAllForTreeSet(SortedSet<? extends K> set, V defaultVal) { |
1950 |
|
try { |
1951 |
|
buildFromSorted(set.size(), set.iterator(), null, defaultVal); |
1952 |
|
} catch (java.io.IOException cannotHappen) { |
1971 |
|
* to calling this method. |
1972 |
|
* |
1973 |
|
* @param size the number of keys (or key-value pairs) to be read from |
1974 |
< |
* the iterator or stream. |
1974 |
> |
* the iterator or stream |
1975 |
|
* @param it If non-null, new entries are created from entries |
1976 |
|
* or keys read from this iterator. |
1977 |
|
* @param str If non-null, new entries are created from keys and |
2006 |
|
* @param level the current level of tree. Initial call should be 0. |
2007 |
|
* @param lo the first element index of this subtree. Initial should be 0. |
2008 |
|
* @param hi the last element index of this subtree. Initial should be |
2009 |
< |
* size-1. |
2009 |
> |
* size-1. |
2010 |
|
* @param redLevel the level at which nodes should be red. |
2011 |
|
* Must be equal to computeRedLevel for tree of this size. |
2012 |
|
*/ |
2090 |
|
level++; |
2091 |
|
return level; |
2092 |
|
} |
2343 |
– |
|
2093 |
|
} |