java.lang.Object
- it.unimi.dsi.fastutil.chars.AbstractChar2ReferenceFunction<V>
- - it.unimi.dsi.fastutil.chars.Char2ReferenceFunctions.EmptyFunction<V>
  - - it.unimi.dsi.fastutil.chars.Char2ReferenceMaps.EmptyMap<V>
    - - it.unimi.dsi.fastutil.chars.Char2ReferenceSortedMaps.EmptySortedMap<V>

All Implemented Interfaces:

Char2ReferenceFunction<V>, Char2ReferenceMap<V>, Char2ReferenceSortedMap<V>, Function<Character,V>, Serializable, Cloneable, Function<Character,V>, IntFunction<V>, Map<Character,V>, SortedMap<Character,V>

Enclosing class:

Char2ReferenceSortedMaps
```
public static class Char2ReferenceSortedMaps.EmptySortedMap<V>
extends Char2ReferenceMaps.EmptyMap<V>
implements Char2ReferenceSortedMap<V>, Serializable, Cloneable
```
An immutable class representing an empty type-specific sorted map.
This class may be useful to implement your own in case you subclass a type-specific sorted map.

See Also:

Serialized Form

Nested Class Summary
- Nested classes/interfaces inherited from interface it.unimi.dsi.fastutil.chars.Char2ReferenceMap
  Char2ReferenceMap.Entry<V>, Char2ReferenceMap.FastEntrySet<V>
- Nested classes/interfaces inherited from interface it.unimi.dsi.fastutil.chars.Char2ReferenceSortedMap
  Char2ReferenceSortedMap.FastSortedEntrySet<V>
- Nested classes/interfaces inherited from interface java.util.Map
  Map.Entry<K extends Object,V extends Object>

Method Summary

Modifier and Type	Method	Description
`ObjectSortedSet<Char2ReferenceMap.Entry<V>>`	`char2ReferenceEntrySet()`	Returns a type-specific set view of the mappings contained in this map.
`CharComparator`	`comparator()`	Returns the comparator associated with this sorted set, or null if it uses its keys' natural ordering.
`ObjectSortedSet<Map.Entry<Character,V>>`	`entrySet()`	Deprecated. Please use the corresponding type-specific method instead.
`char`	`firstCharKey()`	Returns the first (lowest) key currently in this map.
`Character`	`firstKey()`	Deprecated. Please use the corresponding type-specific method instead.
`Char2ReferenceSortedMap<V>`	`headMap(char to)`	Returns a view of the portion of this sorted map whose keys are strictly less than `toKey`.
`Char2ReferenceSortedMap<V>`	`headMap(Character oto)`	Deprecated. Please use the corresponding type-specific method instead.
`CharSortedSet`	`keySet()`
`char`	`lastCharKey()`	Returns the last (highest) key currently in this map.
`Character`	`lastKey()`	Deprecated. Please use the corresponding type-specific method instead.
`Char2ReferenceSortedMap<V>`	`subMap(char from, char to)`	Returns a view of the portion of this sorted map whose keys range from `fromKey`, inclusive, to `toKey`, exclusive.
`Char2ReferenceSortedMap<V>`	`subMap(Character ofrom, Character oto)`	Deprecated. Please use the corresponding type-specific method instead.
`Char2ReferenceSortedMap<V>`	`tailMap(char from)`	Returns a view of the portion of this sorted map whose keys are greater than or equal to `fromKey`.
`Char2ReferenceSortedMap<V>`	`tailMap(Character ofrom)`	Deprecated. Please use the corresponding type-specific method instead.

Methods inherited from class it.unimi.dsi.fastutil.chars.Char2ReferenceMaps.EmptyMap
clone, containsValue, equals, hashCode, isEmpty, putAll, toString, values

Methods inherited from class it.unimi.dsi.fastutil.chars.Char2ReferenceFunctions.EmptyFunction
clear, containsKey, defaultReturnValue, defaultReturnValue, get, size

Methods inherited from class java.lang.Object
getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface it.unimi.dsi.fastutil.chars.Char2ReferenceFunction
apply, get, put, remove

Methods inherited from interface it.unimi.dsi.fastutil.chars.Char2ReferenceMap
clear, compute, compute, computeIfAbsent, computeIfAbsent, computeIfAbsentPartial, computeIfPresent, computeIfPresent, containsKey, containsKey, defaultReturnValue, defaultReturnValue, get, getOrDefault, getOrDefault, merge, merge, put, putIfAbsent, putIfAbsent, remove, remove, remove, replace, replace, replace, replace, size

Methods inherited from interface it.unimi.dsi.fastutil.chars.Char2ReferenceSortedMap
values

Methods inherited from interface it.unimi.dsi.fastutil.Function
apply

Methods inherited from interface java.util.function.Function
andThen, compose

Methods inherited from interface java.util.Map
clear, containsKey, containsValue, equals, forEach, get, hashCode, isEmpty, put, putAll, remove, replaceAll, size

- Method Detail
  - comparator
```
public CharComparator comparator()
```
    Description copied from interface: Char2ReferenceSortedMap
    
    Returns the comparator associated with this sorted set, or null if it uses its keys' natural ordering.
    Note that this specification strengthens the one given in SortedMap.comparator().
    
    Specified by:
    
    comparator in interface Char2ReferenceSortedMap<V>
    
    Specified by:
    
    comparator in interface SortedMap<Character,V>
    
    See Also:
    
    SortedMap.comparator()
  - char2ReferenceEntrySet
```
public ObjectSortedSet<Char2ReferenceMap.Entry<V>> char2ReferenceEntrySet()
```
    Description copied from interface: Char2ReferenceMap
    
    Returns a type-specific set view of the mappings contained in this map.
    This method is necessary because there is no inheritance along type parameters: it is thus impossible to strengthen Map.entrySet() so that it returns an ObjectSet of type-specific entries (the latter makes it possible to access keys and values with type-specific methods).
    
    Specified by:
    
    char2ReferenceEntrySet in interface Char2ReferenceMap<V>
    
    Specified by:
    
    char2ReferenceEntrySet in interface Char2ReferenceSortedMap<V>
    
    Overrides:
    
    char2ReferenceEntrySet in class Char2ReferenceMaps.EmptyMap<V>
    
    Returns:
    
    a type-specific set view of the mappings contained in this map.
    
    See Also:
    
    Map.entrySet()
  - entrySet
```
@Deprecated
public ObjectSortedSet<Map.Entry<Character,V>> entrySet()
```
    Deprecated.
    Please use the corresponding type-specific method instead.
    
    Returns a sorted-set view of the mappings contained in this map.
    Note that this specification strengthens the one given in the corresponding type-specific unsorted map.
    
    Specified by:
    
    entrySet in interface Char2ReferenceMap<V>
    
    Specified by:
    
    entrySet in interface Char2ReferenceSortedMap<V>
    
    Specified by:
    
    entrySet in interface Map<Character,V>
    
    Specified by:
    
    entrySet in interface SortedMap<Character,V>
    
    Returns:
    
    a sorted-set view of the mappings contained in this map.
    
    See Also:
    
    SortedMap.entrySet()
  - keySet
```
public CharSortedSet keySet()
```
    Description copied from interface: Char2ReferenceMap
    
    Note that this specification strengthens the one given in Map.keySet().
    
    Specified by:
    
    keySet in interface Char2ReferenceMap<V>
    
    Specified by:
    
    keySet in interface Char2ReferenceSortedMap<V>
    
    Specified by:
    
    keySet in interface Map<Character,V>
    
    Specified by:
    
    keySet in interface SortedMap<Character,V>
    
    Overrides:
    
    keySet in class Char2ReferenceMaps.EmptyMap<V>
    
    Returns:
    
    a set view of the keys contained in this map.
    
    See Also:
    
    Map.keySet()
  - subMap
```
public Char2ReferenceSortedMap<V> subMap(char from,
                                         char to)
```
    Description copied from interface: Char2ReferenceSortedMap
    
    Returns a view of the portion of this sorted map whose keys range from fromKey, inclusive, to toKey, exclusive.
    Note that this specification strengthens the one given in SortedMap.subMap(Object,Object).
    
    Specified by:
    
    subMap in interface Char2ReferenceSortedMap<V>
    
    See Also:
    
    SortedMap.subMap(Object,Object)
  - headMap
```
public Char2ReferenceSortedMap<V> headMap(char to)
```
    Description copied from interface: Char2ReferenceSortedMap
    
    Returns a view of the portion of this sorted map whose keys are strictly less than toKey.
    Note that this specification strengthens the one given in SortedMap.headMap(Object).
    
    Specified by:
    
    headMap in interface Char2ReferenceSortedMap<V>
    
    See Also:
    
    SortedMap.headMap(Object)
  - tailMap
```
public Char2ReferenceSortedMap<V> tailMap(char from)
```
    Description copied from interface: Char2ReferenceSortedMap
    
    Returns a view of the portion of this sorted map whose keys are greater than or equal to fromKey.
    Note that this specification strengthens the one given in SortedMap.tailMap(Object).
    
    Specified by:
    
    tailMap in interface Char2ReferenceSortedMap<V>
    
    See Also:
    
    SortedMap.tailMap(Object)
  - firstCharKey
```
public char firstCharKey()
```
    Description copied from interface: Char2ReferenceSortedMap
    
    Returns the first (lowest) key currently in this map.
    
    Specified by:
    
    firstCharKey in interface Char2ReferenceSortedMap<V>
    
    See Also:
    
    SortedMap.firstKey()
  - lastCharKey
```
public char lastCharKey()
```
    Description copied from interface: Char2ReferenceSortedMap
    
    Returns the last (highest) key currently in this map.
    
    Specified by:
    
    lastCharKey in interface Char2ReferenceSortedMap<V>
    
    See Also:
    
    SortedMap.lastKey()
  - headMap
```
@Deprecated
public Char2ReferenceSortedMap<V> headMap(Character oto)
```
    Deprecated.
    Please use the corresponding type-specific method instead.
    
    Note that this specification strengthens the one given in SortedMap.headMap(Object).
    
    Specified by:
    
    headMap in interface Char2ReferenceSortedMap<V>
    
    Specified by:
    
    headMap in interface SortedMap<Character,V>
  - tailMap
```
@Deprecated
public Char2ReferenceSortedMap<V> tailMap(Character ofrom)
```
    Deprecated.
    Please use the corresponding type-specific method instead.
    
    Note that this specification strengthens the one given in SortedMap.tailMap(Object).
    
    Specified by:
    
    tailMap in interface Char2ReferenceSortedMap<V>
    
    Specified by:
    
    tailMap in interface SortedMap<Character,V>
  - subMap
```
@Deprecated
public Char2ReferenceSortedMap<V> subMap(Character ofrom,
                                         Character oto)
```
    Deprecated.
    Please use the corresponding type-specific method instead.
    
    Note that this specification strengthens the one given in SortedMap.subMap(Object,Object).
    
    Specified by:
    
    subMap in interface Char2ReferenceSortedMap<V>
    
    Specified by:
    
    subMap in interface SortedMap<Character,V>
  - firstKey
```
@Deprecated
public Character firstKey()
```
    Deprecated.
    Please use the corresponding type-specific method instead.
    
    Specified by:
    
    firstKey in interface Char2ReferenceSortedMap<V>
    
    Specified by:
    
    firstKey in interface SortedMap<Character,V>
  - lastKey
```
@Deprecated
public Character lastKey()
```
    Deprecated.
    Please use the corresponding type-specific method instead.
    
    Specified by:
    
    lastKey in interface Char2ReferenceSortedMap<V>
    
    Specified by:
    
    lastKey in interface SortedMap<Character,V>

Class Char2ReferenceSortedMaps.EmptySortedMap<V>

Nested Class Summary

Nested classes/interfaces inherited from interface it.unimi.dsi.fastutil.chars.Char2ReferenceMap

Nested classes/interfaces inherited from interface it.unimi.dsi.fastutil.chars.Char2ReferenceSortedMap

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

Method Summary

Methods inherited from class it.unimi.dsi.fastutil.chars.Char2ReferenceMaps.EmptyMap

Methods inherited from class it.unimi.dsi.fastutil.chars.Char2ReferenceFunctions.EmptyFunction

Methods inherited from class java.lang.Object

Methods inherited from interface it.unimi.dsi.fastutil.chars.Char2ReferenceFunction

Methods inherited from interface it.unimi.dsi.fastutil.chars.Char2ReferenceMap

Methods inherited from interface it.unimi.dsi.fastutil.chars.Char2ReferenceSortedMap

Methods inherited from interface it.unimi.dsi.fastutil.Function

Methods inherited from interface java.util.function.Function

Methods inherited from interface java.util.Map

Method Detail

comparator

char2ReferenceEntrySet

entrySet

keySet

subMap

headMap

tailMap

firstCharKey

lastCharKey

headMap

tailMap

subMap

firstKey

lastKey