oracle.ide.util

Class IntHashMap<V>

java.lang.Object

oracle.ide.util.IntHashMap<V>

public class IntHashMap<V>
extends java.lang.Object

Constructor Summary

Constructors

Constructor and Description
IntHashMap() Constructs a new, empty map with a default capacity and load factor, which is 0.75.
IntHashMap(int initialCapacity) Constructs a new, empty map with the specified initial capacity and default load factor, which is 0.75.
IntHashMap(int initialCapacity, float loadFactor) Constructs a new, empty map with the specified initial capacity and the specified load factor.

Method Summary

Modifier and Type	Method and Description
void	clear() Removes all mappings from this map.
boolean	containsKey(int 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.
V	get(int 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.util.Iterator<V>	iterator()
java.util.Set<java.lang.Integer>	keySet()
V	put(int key, V value) Associates the specified value with the specified key in this 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.

Methods inherited from class java.lang.Object

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

Constructor Detail

IntHashMap

public IntHashMap(int initialCapacity,
                  float loadFactor)

Constructs a new, empty map with the specified initial capacity and the specified load factor.

Parameters:

initialCapacity - the initial capacity of the HashMap.

loadFactor - the load factor of the HashMap

Throws:

java.lang.IllegalArgumentException - if the initial capacity is less than zero, or if the load factor is nonpositive.

IntHashMap

public IntHashMap(int initialCapacity)

Constructs a new, empty map with the specified initial capacity and default load factor, which is 0.75.

Parameters:

initialCapacity - the initial capacity of the HashMap.

Throws:

java.lang.IllegalArgumentException - if the initial capacity is less than zero.

IntHashMap

public IntHashMap()

Constructs a new, empty map with a default capacity and load factor, which is 0.75.

Method Detail

size

public int size()

Returns the number of key-value mappings in this map.

Returns:

the number of key-value mappings in this map.

isEmpty

public boolean isEmpty()

Returns true if this map contains no key-value mappings.

Returns:

true if this map contains no key-value mappings.

containsValue

public boolean containsValue(java.lang.Object value)

Returns true if this map maps one or more keys to the specified value.

Parameters:

value - value whose presence in this map is to be tested.

Returns:

true if this map maps one or more keys to the specified value.

containsKey

public boolean containsKey(int key)

Returns true if this map contains a mapping for the specified key.

Parameters:

key - key whose presence in this Map is to be tested.

Returns:

true if this map contains a mapping for the specified key.

get

public V get(int key)

Returns the value to which this map maps the specified key. Returns null if the map contains no mapping for this key. A return value of null does not necessarily indicate that the map contains no mapping for the key; it's also possible that the map explicitly maps the key to null. The containsKey operation may be used to distinguish these two cases.

Parameters:

key - key whose associated value is to be returned.

Returns:

the value to which this map maps the specified key.

put

public V put(int key,
             V value)

Associates the specified value with the specified key in this map. If the map previously contained a mapping for this key, the old value is replaced.

Parameters:

key - key with which the specified value is to be associated.

value - value to be associated with the specified key.

Returns:

previous value associated with specified key, or null if there was no mapping for key. A null return can also indicate that the HashMap previously associated null with the specified key.

remove

public V remove(int key)

Removes the mapping for this key from this map if present.

Parameters:

key - key whose mapping is to be removed from the map.

Returns:

previous value associated with specified key, or null if there was no mapping for key. A null return can also indicate that the map previously associated null with the specified key.

clear

public void clear()

Removes all mappings from this map.

iterator

public java.util.Iterator<V> iterator()

keySet

public java.util.Set<java.lang.Integer> keySet()