程序包 java.util.concurrent

接口 ConcurrentNavigableMap<K,V>

类型参数:

K - the type of keys maintained by this map

V - the type of mapped values

所有超级接口:

ConcurrentMap<K,V>, Map<K,V>, NavigableMap<K,V>, SortedMap<K,V>

所有已知实现类:

ConcurrentSkipListMap

public interface ConcurrentNavigableMap<K,V>
extends ConcurrentMap<K,V>, NavigableMap<K,V>

A ConcurrentMap supporting NavigableMap operations, and recursively so for its navigable sub-maps.

This interface is a member of the Java Collections Framework.

从以下版本开始:

1.6

嵌套类概要

从接口继承的嵌套类/接口 java.util.Map

Map.Entry<K,V>

方法概要

限定符和类型	方法	说明
NavigableSet<K>	descendingKeySet()	Returns a reverse order NavigableSet view of the keys contained in this map.
ConcurrentNavigableMap<K,V>	descendingMap()	Returns a reverse order view of the mappings contained in this map.
ConcurrentNavigableMap<K,V>	headMap(K toKey)	Returns a view of the portion of this map whose keys are strictly less than toKey.
ConcurrentNavigableMap<K,V>	headMap(K toKey, boolean inclusive)	Returns a view of the portion of this map whose keys are less than (or equal to, if inclusive is true) toKey.
NavigableSet<K>	keySet()	Returns a NavigableSet view of the keys contained in this map.
NavigableSet<K>	navigableKeySet()	Returns a NavigableSet view of the keys contained in this map.
ConcurrentNavigableMap<K,V>	subMap(K fromKey, boolean fromInclusive, K toKey, boolean toInclusive)	Returns a view of the portion of this map whose keys range from fromKey to toKey.
ConcurrentNavigableMap<K,V>	subMap(K fromKey, K toKey)	Returns a view of the portion of this map whose keys range from fromKey, inclusive, to toKey, exclusive.
ConcurrentNavigableMap<K,V>	tailMap(K fromKey)	Returns a view of the portion of this map whose keys are greater than or equal to fromKey.
ConcurrentNavigableMap<K,V>	tailMap(K fromKey, boolean inclusive)	Returns a view of the portion of this map whose keys are greater than (or equal to, if inclusive is true) fromKey.

从接口继承的方法 java.util.concurrent.ConcurrentMap

compute, computeIfAbsent, computeIfPresent, forEach, getOrDefault, merge, putIfAbsent, remove, replace, replace, replaceAll

从接口继承的方法 java.util.Map

clear, containsKey, containsValue, equals, get, hashCode, isEmpty, put, putAll, remove, size

从接口继承的方法 java.util.NavigableMap

ceilingEntry, ceilingKey, firstEntry, floorEntry, floorKey, higherEntry, higherKey, lastEntry, lowerEntry, lowerKey, pollFirstEntry, pollLastEntry

从接口继承的方法 java.util.SortedMap

comparator, entrySet, firstKey, lastKey, values

方法详细资料

subMap

ConcurrentNavigableMap<K,V> subMap(K fromKey,
                                   boolean fromInclusive,
                                   K toKey,
                                   boolean toInclusive)

从接口复制的说明: NavigableMap

Returns a view of the portion of this map whose keys range from fromKey to toKey. If fromKey and toKey are equal, the returned map is empty unless fromInclusive and toInclusive are both true. The returned map is backed by this map, so changes in the returned map are reflected in this map, and vice-versa. The returned map supports all optional map operations that this map supports.

The returned map will throw an IllegalArgumentException on an attempt to insert a key outside of its range, or to construct a submap either of whose endpoints lie outside its range.

指定者:

subMap 在接口中 NavigableMap<K,V>

参数:

fromKey - low endpoint of the keys in the returned map

fromInclusive - true if the low endpoint is to be included in the returned view

toKey - high endpoint of the keys in the returned map

toInclusive - true if the high endpoint is to be included in the returned view

返回:

a view of the portion of this map whose keys range from fromKey to toKey

抛出:

ClassCastException - if fromKey and toKey cannot be compared to one another using this map's comparator (or, if the map has no comparator, using natural ordering). Implementations may, but are not required to, throw this exception if fromKey or toKey cannot be compared to keys currently in the map.

NullPointerException - if fromKey or toKey is null and this map does not permit null keys

IllegalArgumentException - if fromKey is greater than toKey; or if this map itself has a restricted range, and fromKey or toKey lies outside the bounds of the range

headMap

ConcurrentNavigableMap<K,V> headMap(K toKey,
                                    boolean inclusive)

从接口复制的说明: NavigableMap

Returns a view of the portion of this map whose keys are less than (or equal to, if inclusive is true) toKey. The returned map is backed by this map, so changes in the returned map are reflected in this map, and vice-versa. The returned map supports all optional map operations that this map supports.

The returned map will throw an IllegalArgumentException on an attempt to insert a key outside its range.

指定者:

headMap 在接口中 NavigableMap<K,V>

参数:

toKey - high endpoint of the keys in the returned map

inclusive - true if the high endpoint is to be included in the returned view

返回:

a view of the portion of this map whose keys are less than (or equal to, if inclusive is true) toKey

抛出:

ClassCastException - if toKey is not compatible with this map's comparator (or, if the map has no comparator, if toKey does not implement Comparable). Implementations may, but are not required to, throw this exception if toKey cannot be compared to keys currently in the map.

NullPointerException - if toKey is null and this map does not permit null keys

IllegalArgumentException - if this map itself has a restricted range, and toKey lies outside the bounds of the range

tailMap

ConcurrentNavigableMap<K,V> tailMap(K fromKey,
                                    boolean inclusive)

从接口复制的说明: NavigableMap

Returns a view of the portion of this map whose keys are greater than (or equal to, if inclusive is true) fromKey. The returned map is backed by this map, so changes in the returned map are reflected in this map, and vice-versa. The returned map supports all optional map operations that this map supports.

The returned map will throw an IllegalArgumentException on an attempt to insert a key outside its range.

指定者:

tailMap 在接口中 NavigableMap<K,V>

参数:

fromKey - low endpoint of the keys in the returned map

inclusive - true if the low endpoint is to be included in the returned view

返回:

a view of the portion of this map whose keys are greater than (or equal to, if inclusive is true) fromKey

抛出:

ClassCastException - if fromKey is not compatible with this map's comparator (or, if the map has no comparator, if fromKey does not implement Comparable). Implementations may, but are not required to, throw this exception if fromKey cannot be compared to keys currently in the map.

NullPointerException - if fromKey is null and this map does not permit null keys

IllegalArgumentException - if this map itself has a restricted range, and fromKey lies outside the bounds of the range

subMap

ConcurrentNavigableMap<K,V> subMap(K fromKey,
                                   K toKey)

从接口复制的说明: NavigableMap

Returns a view of the portion of this map whose keys range from fromKey, inclusive, to toKey, exclusive. (If fromKey and toKey are equal, the returned map is empty.) The returned map is backed by this map, so changes in the returned map are reflected in this map, and vice-versa. The returned map supports all optional map operations that this map supports.

The returned map will throw an IllegalArgumentException on an attempt to insert a key outside its range.

Equivalent to subMap(fromKey, true, toKey, false).

指定者:

subMap 在接口中 NavigableMap<K,V>

指定者:

subMap 在接口中 SortedMap<K,V>

参数:

fromKey - low endpoint (inclusive) of the keys in the returned map

toKey - high endpoint (exclusive) of the keys in the returned map

返回:

a view of the portion of this map whose keys range from fromKey, inclusive, to toKey, exclusive

抛出:

ClassCastException - if fromKey and toKey cannot be compared to one another using this map's comparator (or, if the map has no comparator, using natural ordering). Implementations may, but are not required to, throw this exception if fromKey or toKey cannot be compared to keys currently in the map.

NullPointerException - if fromKey or toKey is null and this map does not permit null keys

IllegalArgumentException - if fromKey is greater than toKey; or if this map itself has a restricted range, and fromKey or toKey lies outside the bounds of the range

headMap

ConcurrentNavigableMap<K,V> headMap(K toKey)

从接口复制的说明: NavigableMap

Returns a view of the portion of this map whose keys are strictly less than toKey. The returned map is backed by this map, so changes in the returned map are reflected in this map, and vice-versa. The returned map supports all optional map operations that this map supports.

The returned map will throw an IllegalArgumentException on an attempt to insert a key outside its range.

Equivalent to headMap(toKey, false).

指定者:

headMap 在接口中 NavigableMap<K,V>

指定者:

headMap 在接口中 SortedMap<K,V>

参数:

toKey - high endpoint (exclusive) of the keys in the returned map

返回:

a view of the portion of this map whose keys are strictly less than toKey

抛出:

ClassCastException - if toKey is not compatible with this map's comparator (or, if the map has no comparator, if toKey does not implement Comparable). Implementations may, but are not required to, throw this exception if toKey cannot be compared to keys currently in the map.

NullPointerException - if toKey is null and this map does not permit null keys

IllegalArgumentException - if this map itself has a restricted range, and toKey lies outside the bounds of the range

tailMap

ConcurrentNavigableMap<K,V> tailMap(K fromKey)

从接口复制的说明: NavigableMap

Returns a view of the portion of this map whose keys are greater than or equal to fromKey. The returned map is backed by this map, so changes in the returned map are reflected in this map, and vice-versa. The returned map supports all optional map operations that this map supports.

The returned map will throw an IllegalArgumentException on an attempt to insert a key outside its range.

Equivalent to tailMap(fromKey, true).

指定者:

tailMap 在接口中 NavigableMap<K,V>

指定者:

tailMap 在接口中 SortedMap<K,V>

参数:

fromKey - low endpoint (inclusive) of the keys in the returned map

返回:

a view of the portion of this map whose keys are greater than or equal to fromKey

抛出:

ClassCastException - if fromKey is not compatible with this map's comparator (or, if the map has no comparator, if fromKey does not implement Comparable). Implementations may, but are not required to, throw this exception if fromKey cannot be compared to keys currently in the map.

NullPointerException - if fromKey is null and this map does not permit null keys

IllegalArgumentException - if this map itself has a restricted range, and fromKey lies outside the bounds of the range

descendingMap

ConcurrentNavigableMap<K,V> descendingMap()

Returns a reverse order view of the mappings contained in this map. The descending map is backed by this map, so changes to the map are reflected in the descending map, and vice-versa.

The returned map has an ordering equivalent to Collections#reverseOrder(Comparator)(comparator()). The expression m.descendingMap().descendingMap() returns a view of m essentially equivalent to m.

指定者:

descendingMap 在接口中 NavigableMap<K,V>

返回:

a reverse order view of this map

navigableKeySet

NavigableSet<K> navigableKeySet()

Returns a NavigableSet view of the keys contained in this map. The set's iterator returns the keys in ascending order. The set is backed by the map, so changes to the map are reflected in the set, and vice-versa. The set supports element removal, which removes the corresponding mapping from the map, via the Iterator.remove, Set.remove, removeAll, retainAll, and clear operations. It does not support the add or addAll operations.

The view's iterators and spliterators are weakly consistent.

指定者:

navigableKeySet 在接口中 NavigableMap<K,V>

返回:

a navigable set view of the keys in this map

keySet

NavigableSet<K> keySet()

Returns a NavigableSet view of the keys contained in this map. The set's iterator returns the keys in ascending order. The set is backed by the map, so changes to the map are reflected in the set, and vice-versa. The set supports element removal, which removes the corresponding mapping from the map, via the Iterator.remove, Set.remove, removeAll, retainAll, and clear operations. It does not support the add or addAll operations.

The view's iterators and spliterators are weakly consistent.

This method is equivalent to method navigableKeySet.

指定者:

keySet 在接口中 Map<K,V>

指定者:

keySet 在接口中 SortedMap<K,V>

返回:

a navigable set view of the keys in this map

descendingKeySet

NavigableSet<K> descendingKeySet()

Returns a reverse order NavigableSet view of the keys contained in this map. The set's iterator returns the keys in descending order. The set is backed by the map, so changes to the map are reflected in the set, and vice-versa. The set supports element removal, which removes the corresponding mapping from the map, via the Iterator.remove, Set.remove, removeAll, retainAll, and clear operations. It does not support the add or addAll operations.

The view's iterators and spliterators are weakly consistent.

指定者:

descendingKeySet 在接口中 NavigableMap<K,V>

返回:

a reverse order navigable set view of the keys in this map