Package io.netty.util.collection

Class CharCollections.EmptyMap

java.lang.Object

io.netty.util.collection.CharCollections.EmptyMap

All Implemented Interfaces:

CharObjectMap<Object>, Map<Character,Object>

Enclosing class:

CharCollections

private static final class CharCollections.EmptyMap
extends Object
implements CharObjectMap<Object>

An empty map. All operations that attempt to modify the map are unsupported.

Nested Class Summary

Nested classes/interfaces inherited from interface io.netty.util.collection.CharObjectMap

CharObjectMap.PrimitiveEntry<V>

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

Map.Entry<K,V>

Constructor Summary

Constructors

Modifier	Constructor	Description
private	EmptyMap()

Method Summary

Modifier and Type	Method	Description
void	clear()
boolean	containsKey(char key)	Indicates whether or not this map contains a value for the specified key.
boolean	containsKey(Object key)
boolean	containsValue(Object value)
Iterable<CharObjectMap.PrimitiveEntry<Object>>	entries()	Gets an iterable to traverse over the primitive entries contained in this map.
Set<Map.Entry<Character,Object>>	entrySet()
Object	get(char key)	Gets the value in the map with the specified key.
Object	get(Object key)
boolean	isEmpty()
Set<Character>	keySet()
Object	put(char key, Object value)	Puts the given entry into the map.
Object	put(Character key, Object value)
void	putAll(Map<? extends Character,?> m)
Object	remove(char key)	Removes the entry with the specified key.
Object	remove(Object key)
int	size()
Collection<Object>	values()

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface java.util.Map

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

Constructor Details

EmptyMap

private EmptyMap()

Method Details

get

public Object get(char key)

Description copied from interface: CharObjectMap

Gets the value in the map with the specified key.

Specified by:

get in interface CharObjectMap<Object>

Parameters:

key - the key whose associated value is to be returned.

Returns:

the value or null if the key was not found in the map.

put

public Object put(char key,
 Object value)

Description copied from interface: CharObjectMap

Puts the given entry into the map.

Specified by:

put in interface CharObjectMap<Object>

Parameters:

key - the key of the entry.

value - the value of the entry.

Returns:

the previous value for this key or null if there was no previous mapping.

remove

public Object remove(char key)

Description copied from interface: CharObjectMap

Removes the entry with the specified key.

Specified by:

remove in interface CharObjectMap<Object>

Parameters:

key - the key for the entry to be removed from this map.

Returns:

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

size

public int size()

Specified by:

size in interface Map<Character,Object>

isEmpty

public boolean isEmpty()

Specified by:

isEmpty in interface Map<Character,Object>

containsKey

public boolean containsKey(Object key)

Specified by:

containsKey in interface Map<Character,Object>

clear

public void clear()

Specified by:

clear in interface Map<Character,Object>

keySet

public Set<Character> keySet()

Specified by:

keySet in interface Map<Character,Object>

containsKey

public boolean containsKey(char key)

Description copied from interface: CharObjectMap

Indicates whether or not this map contains a value for the specified key.

Specified by:

containsKey in interface CharObjectMap<Object>

containsValue

public boolean containsValue(Object value)

Specified by:

containsValue in interface Map<Character,Object>

entries

public Iterable<CharObjectMap.PrimitiveEntry<Object>> entries()

Description copied from interface: CharObjectMap

Gets an iterable to traverse over the primitive entries contained in this map. As an optimization, the CharObjectMap.PrimitiveEntrys returned by the

invalid reference

Iterator

may change as the

invalid reference

Iterator

progresses. The caller should not rely on CharObjectMap.PrimitiveEntry key/value stability.

Specified by:

entries in interface CharObjectMap<Object>

get

public Object get(Object key)

Specified by:

get in interface Map<Character,Object>

put

public Object put(Character key,
 Object value)

Specified by:

put in interface Map<Character,Object>

remove

public Object remove(Object key)

Specified by:

remove in interface Map<Character,Object>

putAll

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

Specified by:

putAll in interface Map<Character,Object>

values

public Collection<Object> values()

Specified by:

values in interface Map<Character,Object>

entrySet

public Set<Map.Entry<Character,Object>> entrySet()

Specified by:

entrySet in interface Map<Character,Object>