public class Char2ObjectArrayMap<V> extends AbstractChar2ObjectMap<V> implements Serializable, Cloneable
The main purpose of this implementation is that of wrapping cleanly the brute-force approach to the storage of a very small number of pairs: just put them into two parallel arrays and scan linearly to find an item.
AbstractChar2ObjectMap.BasicEntry<V>, AbstractChar2ObjectMap.BasicEntrySet<V>Char2ObjectMap.Entry<V>, Char2ObjectMap.FastEntrySet<V>defRetValue| Constructor and Description |
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Char2ObjectArrayMap()
Creates a new empty array map.
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Char2ObjectArrayMap(char[] key,
Object[] value)
Creates a new empty array map with given key and value backing arrays.
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Char2ObjectArrayMap(char[] key,
Object[] value,
int size)
Creates a new array map with given key and value backing arrays, using the given number of elements.
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Char2ObjectArrayMap(Char2ObjectMap<V> m)
Creates a new empty array map copying the entries of a given map.
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Char2ObjectArrayMap(int capacity)
Creates a new empty array map of given capacity.
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Char2ObjectArrayMap(Map<? extends Character,? extends V> m)
Creates a new empty array map copying the entries of a given map.
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| Modifier and Type | Method and Description |
|---|---|
Char2ObjectMap.FastEntrySet<V> |
char2ObjectEntrySet()
Returns a type-specific set view of the mappings contained in this map.
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void |
clear()
Removes all of the mappings from this map (optional operation).
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Char2ObjectArrayMap<V> |
clone()
Returns a deep copy of this map.
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boolean |
containsKey(char k)
Returns true if this function contains a mapping for the specified key.
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boolean |
containsValue(Object v) |
V |
get(char k)
Returns the value to which the given key is mapped.
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boolean |
isEmpty() |
CharSet |
keySet()
Returns a type-specific-set view of the keys of this map.
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V |
put(char k,
V v)
Adds a pair to the map (optional operation).
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V |
remove(char k)
Removes the mapping with the given key (optional operation).
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int |
size()
Returns the number of key/value mappings in this map.
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ObjectCollection<V> |
values()
Returns a type-specific-set view of the values of this map.
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equals, hashCode, putAll, toStringdefaultReturnValue, defaultReturnValuefinalize, getClass, notify, notifyAll, wait, wait, waitcompute, compute, computeIfAbsent, computeIfAbsent, computeIfAbsentPartial, computeIfPresent, computeIfPresent, containsKey, defaultReturnValue, defaultReturnValue, entrySet, get, getOrDefault, getOrDefault, merge, merge, put, putIfAbsent, putIfAbsent, remove, remove, remove, replace, replace, replace, replaceapplyforEach, replaceAllpublic Char2ObjectArrayMap(char[] key,
Object[] value)
It is responsibility of the caller that the elements of key are distinct.
key - the key array.value - the value array (it must have the same length as key).public Char2ObjectArrayMap()
public Char2ObjectArrayMap(int capacity)
capacity - the initial capacity.public Char2ObjectArrayMap(Char2ObjectMap<V> m)
m - a map.public Char2ObjectArrayMap(Map<? extends Character,? extends V> m)
m - a map.public Char2ObjectArrayMap(char[] key,
Object[] value,
int size)
It is responsibility of the caller that the first size elements of key are distinct.
key - the key array.value - the value array (it must have the same length as key).size - the number of valid elements in key and value.public Char2ObjectMap.FastEntrySet<V> char2ObjectEntrySet()
Char2ObjectMapThis 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).
char2ObjectEntrySet in interface Char2ObjectMap<V>Map.entrySet()public V get(char k)
Char2ObjectFunctionget in interface Char2ObjectFunction<V>k - the key.Function.get(Object)public int size()
Char2ObjectMapInteger.MAX_VALUE elements, returns Integer.MAX_VALUE.public void clear()
Char2ObjectMapclear in interface Char2ObjectMap<V>clear in interface Map<Character,V>Map.clear()public boolean containsKey(char k)
Char2ObjectMapcontainsKey in interface Char2ObjectFunction<V>containsKey in interface Char2ObjectMap<V>containsKey in class AbstractChar2ObjectMap<V>k - the key.key.Map.containsKey(Object)public boolean containsValue(Object v)
containsValue in interface Map<Character,V>containsValue in class AbstractChar2ObjectMap<V>public boolean isEmpty()
public V put(char k, V v)
Char2ObjectFunctionput in interface Char2ObjectFunction<V>k - the key.v - the value.Function.put(Object,Object)public V remove(char k)
Char2ObjectFunctionremove in interface Char2ObjectFunction<V>k - the key.Function.remove(Object)public CharSet keySet()
AbstractChar2ObjectMapThe view is backed by the set returned by Map.entrySet(). Note that
no attempt is made at caching the result of this method, as this would
require adding some attributes that lightweight implementations would
not need. Subclasses may easily override this policy by calling
this method and caching the result, but implementors are encouraged to
write more efficient ad-hoc implementations.
keySet in interface Char2ObjectMap<V>keySet in interface Map<Character,V>keySet in class AbstractChar2ObjectMap<V>Map.keySet()public ObjectCollection<V> values()
AbstractChar2ObjectMapThe view is backed by the set returned by Map.entrySet(). Note that
no attempt is made at caching the result of this method, as this would
require adding some attributes that lightweight implementations would
not need. Subclasses may easily override this policy by calling
this method and caching the result, but implementors are encouraged to
write more efficient ad-hoc implementations.
values in interface Char2ObjectMap<V>values in interface Map<Character,V>values in class AbstractChar2ObjectMap<V>Map.values()public Char2ObjectArrayMap<V> clone()
This method performs a deep copy of this hash map; the data stored in the map, however, is not cloned. Note that this makes a difference only for object keys.
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