org.apache.commons.collections4.map

Class UnmodifiableSortedMap<K,V>

java.lang.Object

org.apache.commons.collections4.map.AbstractIterableMap<K,V>

org.apache.commons.collections4.map.AbstractMapDecorator<K,V>

org.apache.commons.collections4.map.AbstractSortedMapDecorator<K,V>

org.apache.commons.collections4.map.UnmodifiableSortedMap<K,V>

Type Parameters:

K - the type of the keys in this map

V - the type of the values in this map

All Implemented Interfaces:

java.io.Serializable, java.util.Map<K,V>, java.util.SortedMap<K,V>, Get<K,V>, IterableGet<K,V>, IterableMap<K,V>, IterableSortedMap<K,V>, OrderedMap<K,V>, Put<K,V>, Unmodifiable

public final class UnmodifiableSortedMap<K,V>
extends AbstractSortedMapDecorator<K,V>
implements Unmodifiable, java.io.Serializable

Decorates another SortedMap to ensure it can't be altered.

This class is Serializable from Commons Collections 3.1.

Attempts to modify it will result in an UnsupportedOperationException.

Since:

3.0

See Also:

Serialized Form

Nested Class Summary

Nested classes/interfaces inherited from interface java.util.Map

java.util.Map.Entry<K,V>

Method Summary

Modifier and Type	Method and Description
void	clear()
java.util.Comparator<? super K>	comparator()
java.util.Set<java.util.Map.Entry<K,V>>	entrySet()
K	firstKey() Gets the first key currently in this map.
java.util.SortedMap<K,V>	headMap(K toKey)
java.util.Set<K>	keySet()
K	lastKey() Gets the last key currently in this map.
V	put(K key, V value) Note that the return type is Object, rather than V as in the Map interface.
void	putAll(java.util.Map<? extends K,? extends V> mapToCopy)
V	remove(java.lang.Object key)
java.util.SortedMap<K,V>	subMap(K fromKey, K toKey)
java.util.SortedMap<K,V>	tailMap(K fromKey)
static <K,V> java.util.SortedMap<K,V>	unmodifiableSortedMap(java.util.SortedMap<K,? extends V> map) Factory method to create an unmodifiable sorted map.
java.util.Collection<V>	values()

Methods inherited from class org.apache.commons.collections4.map.AbstractSortedMapDecorator

mapIterator, nextKey, previousKey

Methods inherited from class org.apache.commons.collections4.map.AbstractMapDecorator

containsKey, containsValue, equals, get, hashCode, isEmpty, size, toString

Methods inherited from class java.lang.Object

getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface java.util.Map

compute, computeIfAbsent, computeIfPresent, containsKey, containsValue, equals, forEach, get, getOrDefault, hashCode, isEmpty, merge, putIfAbsent, remove, replace, replace, replaceAll, size

Methods inherited from interface org.apache.commons.collections4.Get

containsKey, containsValue, get, isEmpty, size

Method Detail

unmodifiableSortedMap

public static <K,V> java.util.SortedMap<K,V> unmodifiableSortedMap(java.util.SortedMap<K,? extends V> map)

Factory method to create an unmodifiable sorted map.

Type Parameters:

K - the key type

V - the value type

Parameters:

map - the map to decorate, must not be null

Returns:

a new unmodifiable sorted map

Throws:

java.lang.NullPointerException - if map is null

Since:

4.0

clear

public void clear()

Specified by:

clear in interface java.util.Map<K,V>

Specified by:

clear in interface Put<K,V>

Overrides:

clear in class AbstractMapDecorator<K,V>

See Also:

Map.clear()

put

public V put(K key,
             V value)

Description copied from interface: Put

Note that the return type is Object, rather than V as in the Map interface. See the class Javadoc for further info.

Specified by:

put in interface java.util.Map<K,V>

Specified by:

put in interface Put<K,V>

Overrides:

put in class AbstractMapDecorator<K,V>

Parameters:

key - key with which the specified value is to be associated

value - value to be associated with the specified key

Returns:

the previous value associated with key, or null if there was no mapping for key. (A null return can also indicate that the map previously associated null with key, if the implementation supports null values.)

See Also:

Map.put(Object, Object)

putAll

public void putAll(java.util.Map<? extends K,? extends V> mapToCopy)

Specified by:

putAll in interface java.util.Map<K,V>

Specified by:

putAll in interface Put<K,V>

Overrides:

putAll in class AbstractMapDecorator<K,V>

Parameters:

mapToCopy - mappings to be stored in this map

See Also:

Map.putAll(Map)

remove

public V remove(java.lang.Object key)

Specified by:

remove in interface java.util.Map<K,V>

Specified by:

remove in interface Get<K,V>

Overrides:

remove in class AbstractMapDecorator<K,V>

Parameters:

key - key whose mapping is to be removed from the map

Returns:

the previous value associated with key, or null if there was no mapping for key.

See Also:

Map.remove(Object)

entrySet

public java.util.Set<java.util.Map.Entry<K,V>> entrySet()

Specified by:

entrySet in interface java.util.Map<K,V>

Specified by:

entrySet in interface java.util.SortedMap<K,V>

Specified by:

entrySet in interface Get<K,V>

Overrides:

entrySet in class AbstractMapDecorator<K,V>

Returns:

a set view of the mappings contained in this map

See Also:

Map.entrySet()

keySet

public java.util.Set<K> keySet()

Specified by:

keySet in interface java.util.Map<K,V>

Specified by:

keySet in interface java.util.SortedMap<K,V>

Specified by:

keySet in interface Get<K,V>

Overrides:

keySet in class AbstractMapDecorator<K,V>

Returns:

a set view of the keys contained in this map

See Also:

Map.keySet()

values

public java.util.Collection<V> values()

Specified by:

values in interface java.util.Map<K,V>

Specified by:

values in interface java.util.SortedMap<K,V>

Specified by:

values in interface Get<K,V>

Overrides:

values in class AbstractMapDecorator<K,V>

Returns:

a collection view of the values contained in this map

See Also:

Map.values()

firstKey

public K firstKey()

Description copied from interface: OrderedMap

Gets the first key currently in this map.

Specified by:

firstKey in interface java.util.SortedMap<K,V>

Specified by:

firstKey in interface OrderedMap<K,V>

Overrides:

firstKey in class AbstractSortedMapDecorator<K,V>

Returns:

the first key currently in this map

lastKey

public K lastKey()

Description copied from interface: OrderedMap

Gets the last key currently in this map.

Specified by:

lastKey in interface java.util.SortedMap<K,V>

Specified by:

lastKey in interface OrderedMap<K,V>

Overrides:

lastKey in class AbstractSortedMapDecorator<K,V>

Returns:

the last key currently in this map

comparator

public java.util.Comparator<? super K> comparator()

Specified by:

comparator in interface java.util.SortedMap<K,V>

Overrides:

comparator in class AbstractSortedMapDecorator<K,V>

subMap

public java.util.SortedMap<K,V> subMap(K fromKey,
                                       K toKey)

Specified by:

subMap in interface java.util.SortedMap<K,V>

Overrides:

subMap in class AbstractSortedMapDecorator<K,V>

headMap

public java.util.SortedMap<K,V> headMap(K toKey)

Specified by:

headMap in interface java.util.SortedMap<K,V>

Overrides:

headMap in class AbstractSortedMapDecorator<K,V>

tailMap

public java.util.SortedMap<K,V> tailMap(K fromKey)

Specified by:

tailMap in interface java.util.SortedMap<K,V>

Overrides:

tailMap in class AbstractSortedMapDecorator<K,V>