V
- The value in the mappublic class IntHashMap<V> extends Object implements Cloneable, Serializable
Modifier and Type | Class and Description |
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static class |
IntHashMap.Entry<V> |
Constructor and Description |
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IntHashMap()
Constructs an empty HashMap with the default initial capacity (16) and the default
load factor (0.75).
|
IntHashMap(int initialCapacity)
Constructs an empty HashMap with the specified initial capacity and the default load
factor (0.75).
|
IntHashMap(int initialCapacity,
float loadFactor)
Constructs an empty HashMap with the specified initial capacity and load factor.
|
Modifier and Type | Method and Description |
---|---|
void |
clear()
Removes all mappings from this map.
|
Object |
clone()
Returns a shallow copy of this HashMap instance: the keys and values themselves are
not cloned.
|
boolean |
containsKey(int key)
Returns true if this map contains a mapping for the specified key.
|
boolean |
containsValue(Object value)
Returns true if this map maps one or more keys to the specified value.
|
Set<IntHashMap.Entry<V>> |
entrySet()
Returns a collection view of the mappings contained in this map.
|
V |
get(int key)
Returns the value to which the specified key is mapped in this identity hash map, or
null if the map contains no mapping for this key.
|
boolean |
isEmpty()
Returns true if this map contains no key-value mappings.
|
Set<Integer> |
keySet()
Returns a set view of the keys contained in this map.
|
V |
put(int key,
V value)
Associates the specified value with the specified key in this map.
|
void |
putAll(IntHashMap<V> m)
Copies all of the mappings from the specified map to this map These mappings will replace any
mappings that this map had for any of the keys currently in the specified map.
|
V |
remove(int key)
Removes the mapping for this key from this map if present.
|
int |
size()
Returns the number of key-value mappings in this map.
|
Collection<V> |
values()
Returns a collection view of the values contained in this map.
|
public IntHashMap(int initialCapacity, float loadFactor)
initialCapacity
- The initial capacity.loadFactor
- The load factor.IllegalArgumentException
- if the initial capacity is negative or the load factor is nonpositive.public IntHashMap(int initialCapacity)
initialCapacity
- the initial capacity.IllegalArgumentException
- if the initial capacity is negative.public IntHashMap()
public int size()
public boolean isEmpty()
public V get(int key)
key
- the key whose associated value is to be returned.put(int, Object)
public boolean containsKey(int key)
key
- The key whose presence in this map is to be testedpublic V put(int key, V value)
key
- key with which the specified value is to be associated.value
- value to be associated with the specified key.public void putAll(IntHashMap<V> m)
m
- mappings to be stored in this map.NullPointerException
- if the specified map is null.public V remove(int key)
key
- key whose mapping is to be removed from the map.public void clear()
public boolean containsValue(Object value)
value
- value whose presence in this map is to be tested.public Object clone() throws CloneNotSupportedException
clone
in class Object
CloneNotSupportedException
public Set<Integer> keySet()
public Collection<V> values()
public Set<IntHashMap.Entry<V>> entrySet()
Map.Entry
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