public class Char2BooleanArrayMap extends AbstractChar2BooleanMap 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.
AbstractChar2BooleanMap.BasicEntryChar2BooleanMap.Entry, Char2BooleanMap.FastEntrySet| Constructor and Description |
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Char2BooleanArrayMap()
Creates a new empty array map.
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Char2BooleanArrayMap(char[] key,
boolean[] value)
Creates a new empty array map with given key and value backing arrays.
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Char2BooleanArrayMap(char[] key,
boolean[] 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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Char2BooleanArrayMap(Char2BooleanMap m)
Creates a new empty array map copying the entries of a given map.
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Char2BooleanArrayMap(int capacity)
Creates a new empty array map of given capacity.
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Char2BooleanArrayMap(Map<? extends Character,? extends Boolean> m)
Creates a new empty array map copying the entries of a given map.
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| Modifier and Type | Method and Description |
|---|---|
Char2BooleanMap.FastEntrySet |
char2BooleanEntrySet()
Returns a type-specific set view of the mappings contained in this map.
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void |
clear()
Removes all associations from this function (optional operation).
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Char2BooleanArrayMap |
clone()
Returns a deep copy of this map.
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boolean |
containsKey(char k)
Checks whether the given value is contained in
AbstractChar2BooleanMap.keySet(). |
boolean |
containsValue(boolean v)
Checks whether the given value is contained in
AbstractChar2BooleanMap.values(). |
boolean |
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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boolean |
put(char k,
boolean v)
Adds a pair to the map.
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boolean |
remove(char k)
Removes the mapping with the given key.
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int |
size()
Returns the intended number of keys in this function, or -1 if no such number exists.
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BooleanCollection |
values()
Returns a type-specific-set view of the values of this map.
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containsValue, entrySet, equals, hashCode, putAll, toStringcontainsKey, defaultReturnValue, defaultReturnValue, get, put, removedefaultReturnValue, defaultReturnValuecontainsKey, get, put, removecontainsKey, get, put, removepublic Char2BooleanArrayMap(char[] key,
boolean[] 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 Char2BooleanArrayMap()
public Char2BooleanArrayMap(int capacity)
capacity - the initial capacity.public Char2BooleanArrayMap(Char2BooleanMap m)
m - a map.public Char2BooleanArrayMap(Map<? extends Character,? extends Boolean> m)
m - a map.public Char2BooleanArrayMap(char[] key,
boolean[] 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 Char2BooleanMap.FastEntrySet char2BooleanEntrySet()
Char2BooleanMapThis method is necessary because there is no inheritance along
type parameters: it is thus impossible to strengthen Char2BooleanMap.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).
char2BooleanEntrySet in interface Char2BooleanMapChar2BooleanMap.entrySet()public boolean get(char k)
Char2BooleanFunctionget in interface Char2BooleanFunctionk - the key.Function.get(Object)public int size()
FunctionMost function implementations will have some knowledge of the intended number of keys in their domain. In some cases, however, this might not be possible.
public void clear()
Functionpublic boolean containsKey(char k)
AbstractChar2BooleanMapAbstractChar2BooleanMap.keySet().containsKey in interface Char2BooleanFunctioncontainsKey in class AbstractChar2BooleanMapFunction.containsKey(Object)public boolean containsValue(boolean v)
AbstractChar2BooleanMapAbstractChar2BooleanMap.values().containsValue in interface Char2BooleanMapcontainsValue in class AbstractChar2BooleanMapMap.containsValue(Object)public boolean isEmpty()
public boolean put(char k,
boolean v)
Char2BooleanFunctionput in interface Char2BooleanFunctionput in class AbstractChar2BooleanFunctionk - the key.v - the value.Function.put(Object,Object)public boolean remove(char k)
Char2BooleanFunctionremove in interface Char2BooleanFunctionremove in class AbstractChar2BooleanFunctionFunction.remove(Object)public CharSet keySet()
AbstractChar2BooleanMapThe view is backed by the set returned by AbstractChar2BooleanMap.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 Char2BooleanMapkeySet in interface Map<Character,Boolean>keySet in class AbstractChar2BooleanMapMap.keySet()public BooleanCollection values()
AbstractChar2BooleanMapThe view is backed by the set returned by AbstractChar2BooleanMap.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 Char2BooleanMapvalues in interface Map<Character,Boolean>values in class AbstractChar2BooleanMapMap.values()public Char2BooleanArrayMap 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.