it.unimi.dsi.fastutil.chars

Class Char2CharMaps.EmptyMap

java.lang.Object

it.unimi.dsi.fastutil.chars.AbstractChar2CharFunction

it.unimi.dsi.fastutil.chars.Char2CharFunctions.EmptyFunction

it.unimi.dsi.fastutil.chars.Char2CharMaps.EmptyMap

All Implemented Interfaces:

Char2CharFunction, Char2CharMap, Function<Character,Character>, Serializable, Cloneable, Map<Character,Character>

Direct Known Subclasses:

Char2CharSortedMaps.EmptySortedMap

Enclosing class:

Char2CharMaps

public static class Char2CharMaps.EmptyMap
extends Char2CharFunctions.EmptyFunction
implements Char2CharMap, Serializable, Cloneable

An immutable class representing an empty type-specific map.

This class may be useful to implement your own in case you subclass a type-specific map.

See Also:

Serialized Form

Nested Class Summary

Nested classes/interfaces inherited from interface it.unimi.dsi.fastutil.chars.Char2CharMap

Char2CharMap.Entry, Char2CharMap.FastEntrySet

Field Summary

Fields

Modifier and Type	Field and Description
static long	serialVersionUID

Fields inherited from class it.unimi.dsi.fastutil.chars.AbstractChar2CharFunction

defRetValue

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	Char2CharMaps.EmptyMap()

Method Summary

Methods

Modifier and Type	Method and Description
ObjectSet<Char2CharMap.Entry>	char2CharEntrySet() Returns a type-specific set view of the mappings contained in this map.
Object	clone()
boolean	containsValue(char v)
boolean	containsValue(Object ov)
ObjectSet<Map.Entry<Character,Character>>	entrySet() Returns a set view of the mappings contained in this map.
boolean	equals(Object o)
int	hashCode()
boolean	isEmpty()
CharSet	keySet() Returns a set view of the keys contained in this map.
void	putAll(Map<? extends Character,? extends Character> m)
String	toString()
CharCollection	values() Returns a set view of the values contained in this map.

Methods inherited from class it.unimi.dsi.fastutil.chars.Char2CharFunctions.EmptyFunction

clear, containsKey, defaultReturnValue, defaultReturnValue, get, get, size

Methods inherited from class it.unimi.dsi.fastutil.chars.AbstractChar2CharFunction

containsKey, put, put, remove, remove

Methods inherited from class java.lang.Object

finalize, getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface it.unimi.dsi.fastutil.chars.Char2CharFunction

containsKey, defaultReturnValue, defaultReturnValue, get, put, remove

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

clear, containsKey, get, put, remove, size

Methods inherited from interface java.util.Map

clear, containsKey, get, put, remove, size

Field Detail

serialVersionUID

public static final long serialVersionUID

See Also:

Constant Field Values

Constructor Detail

Char2CharMaps.EmptyMap

protected Char2CharMaps.EmptyMap()

Method Detail

containsValue

public boolean containsValue(char v)

Specified by:

containsValue in interface Char2CharMap

See Also:

Map.containsValue(Object)

putAll

public void putAll(Map<? extends Character,? extends Character> m)

Specified by:

putAll in interface Map<Character,Character>

char2CharEntrySet

public ObjectSet<Char2CharMap.Entry> char2CharEntrySet()

Description copied from interface: Char2CharMap

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 Char2CharMap.entrySet() so that it returns an ObjectSet of objects of type Map.Entry (the latter makes it possible to access keys and values with type-specific methods).

Specified by:

char2CharEntrySet in interface Char2CharMap

Returns:

a type-specific set view of the mappings contained in this map.

See Also:

Char2CharMap.entrySet()

keySet

public CharSet keySet()

Description copied from interface: Char2CharMap

Returns a set view of the keys contained in this map.

Note that this specification strengthens the one given in Map.keySet().

Specified by:

keySet in interface Char2CharMap

Specified by:

keySet in interface Map<Character,Character>

Returns:

a set view of the keys contained in this map.

See Also:

Map.keySet()

values

public CharCollection values()

Description copied from interface: Char2CharMap

Returns a set view of the values contained in this map.

Note that this specification strengthens the one given in Map.values().

Specified by:

values in interface Char2CharMap

Specified by:

values in interface Map<Character,Character>

Returns:

a set view of the values contained in this map.

See Also:

Map.values()

containsValue

public boolean containsValue(Object ov)

Specified by:

containsValue in interface Map<Character,Character>

clone

public Object clone()

Overrides:

clone in class Char2CharFunctions.EmptyFunction

isEmpty

public boolean isEmpty()

Specified by:

isEmpty in interface Map<Character,Character>

entrySet

public ObjectSet<Map.Entry<Character,Character>> entrySet()

Description copied from interface: Char2CharMap

Returns a set view of the mappings contained in this map.

Note that this specification strengthens the one given in Map.entrySet().

Specified by:

entrySet in interface Char2CharMap

Specified by:

entrySet in interface Map<Character,Character>

Returns:

a set view of the mappings contained in this map.

See Also:

Map.entrySet()

hashCode

public int hashCode()

Specified by:

hashCode in interface Map<Character,Character>

Overrides:

hashCode in class Object

equals

public boolean equals(Object o)

Specified by:

equals in interface Map<Character,Character>

Overrides:

equals in class Object

toString

public String toString()

Overrides:

toString in class Object