public class LongHashMap
extends java.lang.Object
Constructor and Description |
---|
LongHashMap()
Constructs a new, empty map with a default capacity and load
factor, which is 0.75.
|
LongHashMap(int initialCapacity)
Constructs a new, empty map with the specified initial capacity
and default load factor, which is 0.75.
|
LongHashMap(int initialCapacity,
float loadFactor)
Constructs a new, empty map with the specified initial
capacity and the specified load factor.
|
Modifier and Type | Method and Description |
---|---|
void |
clear()
Removes all mappings from this map.
|
boolean |
containsKey(long key)
Returns true if this map contains a mapping for the specified
key.
|
boolean |
containsValue(java.lang.Object value)
Returns true if this map maps one or more keys to the
specified value.
|
java.lang.Object |
get(long key)
Returns the value to which this map maps the specified key.
|
boolean |
isEmpty()
Returns true if this map contains no key-value mappings.
|
java.lang.Object |
put(long key,
java.lang.Object value)
Associates the specified value with the specified key in this map.
|
java.lang.Object |
remove(long key)
Removes the mapping for this key from this map if present.
|
int |
size()
Returns the number of key-value mappings in this map.
|
public LongHashMap(int initialCapacity, float loadFactor)
initialCapacity
- the initial capacity of the HashMap.loadFactor
- the load factor of the HashMapjava.lang.IllegalArgumentException
- if the initial capacity is less
than zero, or if the load factor is nonpositive.public LongHashMap(int initialCapacity)
initialCapacity
- the initial capacity of the HashMap.java.lang.IllegalArgumentException
- if the initial capacity is less
than zero.public LongHashMap()
public int size()
public boolean isEmpty()
public java.lang.Object get(long key)
key
- key whose associated value is to be returned.public boolean containsKey(long key)
key
- key whose presence in this Map is to be tested.public boolean containsValue(java.lang.Object value)
value
- value whose presence in this map is to be tested.public java.lang.Object put(long key, java.lang.Object value)
key
- key with which the specified value is to be associated.value
- value to be associated with the specified key.public java.lang.Object remove(long key)
key
- key whose mapping is to be removed from the map.public void clear()
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