Package com.globalmentor.collections

Class MapEntryMap<K,V>

java.lang.Object

com.globalmentor.collections.MapEntryMap<K,V>

Type Parameters:

K - The type of key contained in the map.

V - The type of value contained in the map.

All Implemented Interfaces:

ImmutableMap<K,V>, Map<K,V>

public class MapEntryMap<K,V>
extends Object
implements Map<K,V>, ImmutableMap<K,V>

A read-only map containing a single map entry.

Author:

Garret Wilson

Nested Class Summary

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

Map.Entry<K extends Object,V extends Object>

Constructor Summary

Constructors

Constructor	Description
MapEntryMap(NameValuePair<K,V> nameValuePair)	Name/value pair copy constructor.
MapEntryMap(Map.Entry<K,V> mapEntry)	Map entry copy constructor.
MapEntryMap(K key, V value)	Key and value constructor.

Method Summary

Modifier and Type	Method	Description
void	clear()
boolean	containsKey(Object key)
boolean	containsValue(Object value)
Set<Map.Entry<K,V>>	entrySet()
boolean	equals(Object o)
V	get(Object key)
int	hashCode()
boolean	isEmpty()
Set<K>	keySet()
V	put(K key, V value)
void	putAll(Map<? extends K,? extends V> m)
V	remove(Object key)
int	size()
Collection<V>	values()

Methods inherited from class java.lang.Object

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

Methods inherited from interface java.util.Map

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

Constructor Details

MapEntryMap

public MapEntryMap(K key,
 V value)

Key and value constructor.

Parameters:

key - The key to hold in the map.

value - The value to hold in the map.

MapEntryMap

public MapEntryMap(NameValuePair<K,V> nameValuePair)

Name/value pair copy constructor.

Parameters:

nameValuePair - The name/value pair the values of which to hold in the map.

Throws:

NullPointerException - if the given name/value pair is null.

MapEntryMap

public MapEntryMap(Map.Entry<K,V> mapEntry)

Map entry copy constructor.

Parameters:

mapEntry - The map entry the values of which to hold in the map.

Throws:

NullPointerException - if the given map entry is null.

Method Details

size

public int size()

Specified by:

size in interface Map<K,V>

isEmpty

public boolean isEmpty()

Specified by:

isEmpty in interface Map<K,V>

containsKey

public boolean containsKey(Object key)

Specified by:

containsKey in interface Map<K,V>

containsValue

public boolean containsValue(Object value)

Specified by:

containsValue in interface Map<K,V>

get

public V get(Object key)

Specified by:

get in interface Map<K,V>

put

public V put(K key,
 V value)

Specified by:

put in interface Map<K,V>

remove

public V remove(Object key)

Specified by:

remove in interface Map<K,V>

putAll

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

Specified by:

putAll in interface Map<K,V>

clear

public void clear()

Specified by:

clear in interface Map<K,V>

keySet

public Set<K> keySet()

Specified by:

keySet in interface Map<K,V>

values

public Collection<V> values()

Specified by:

values in interface Map<K,V>

entrySet

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

Specified by:

entrySet in interface Map<K,V>

equals

public boolean equals(Object o)

Specified by:

equals in interface Map<K,V>

Overrides:

equals in class Object

hashCode

public int hashCode()

Specified by:

hashCode in interface Map<K,V>

Overrides:

hashCode in class Object