org.jupiter.common.util.collection

类 ByteObjectHashMap<V>

java.lang.Object

org.jupiter.common.util.collection.ByteObjectHashMap<V>

类型参数:

V - The value type stored in the map.

所有已实现的接口:

Map<Byte,V>, ByteObjectMap<V>

public class ByteObjectHashMap<V>
extends Object
implements ByteObjectMap<V>

A hash map implementation of ByteObjectMap that uses open addressing for keys. To minimize the memory footprint, this class uses open addressing rather than chaining. Collisions are resolved using linear probing. Deletions implement compaction, so cost of remove can approach O(N) for full maps, which makes a small loadFactor recommended.

嵌套类概要

从接口继承的嵌套类/接口 org.jupiter.common.util.collection.ByteObjectMap

ByteObjectMap.PrimitiveEntry<V>

从接口继承的嵌套类/接口 java.util.Map

Map.Entry<K,V>

字段概要

字段

限定符和类型	字段和说明
static int	DEFAULT_CAPACITY Default initial capacity.
static float	DEFAULT_LOAD_FACTOR Default load factor.

构造器概要

构造器

构造器和说明
ByteObjectHashMap()
ByteObjectHashMap(int initialCapacity)
ByteObjectHashMap(int initialCapacity, float loadFactor)

方法概要

方法

限定符和类型	方法和说明
void	clear()
boolean	containsKey(byte key) Indicates whether or not this map contains a value for the specified key.
boolean	containsKey(Object key)
boolean	containsValue(Object value)
Iterable<ByteObjectMap.PrimitiveEntry<V>>	entries() Gets an iterable to traverse over the primitive entries contained in this map.
Set<Map.Entry<Byte,V>>	entrySet()
boolean	equals(Object obj)
V	get(byte key) Gets the value in the map with the specified key.
V	get(Object key)
int	hashCode()
boolean	isEmpty()
Set<Byte>	keySet()
protected String	keyToString(byte key) Helper method called by toString() in order to convert a single map key into a string.
V	put(byte key, V value) Puts the given entry into the map.
V	put(Byte key, V value)
void	putAll(Map<? extends Byte,? extends V> sourceMap)
V	remove(byte key) Removes the entry with the specified key.
V	remove(Object key)
int	size()
String	toString()
Collection<V>	values()

从类继承的方法 java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

字段详细资料

DEFAULT_CAPACITY

public static final int DEFAULT_CAPACITY

Default initial capacity. Used if not specified in the constructor

另请参阅:

常量字段值

DEFAULT_LOAD_FACTOR

public static final float DEFAULT_LOAD_FACTOR

Default load factor. Used if not specified in the constructor

另请参阅:

常量字段值

构造器详细资料

ByteObjectHashMap

public ByteObjectHashMap()

ByteObjectHashMap

public ByteObjectHashMap(int initialCapacity)

ByteObjectHashMap

public ByteObjectHashMap(int initialCapacity,
                 float loadFactor)

方法详细资料

get

public V get(byte key)

从接口复制的说明: ByteObjectMap

Gets the value in the map with the specified key.

指定者:

get 在接口中 ByteObjectMap<V>

参数:

key - the key whose associated value is to be returned.

返回:

the value or null if the key was not found in the map.

put

public V put(byte key,
    V value)

从接口复制的说明: ByteObjectMap

Puts the given entry into the map.

指定者:

put 在接口中 ByteObjectMap<V>

参数:

key - the key of the entry.

value - the value of the entry.

返回:

the previous value for this key or null if there was no previous mapping.

putAll

public void putAll(Map<? extends Byte,? extends V> sourceMap)

指定者:

putAll 在接口中 Map<Byte,V>

remove

public V remove(byte key)

从接口复制的说明: ByteObjectMap

Removes the entry with the specified key.

指定者:

remove 在接口中 ByteObjectMap<V>

参数:

key - the key for the entry to be removed from this map.

返回:

the previous value for the key, or null if there was no mapping.

size

public int size()

指定者:

size 在接口中 Map<Byte,V>

isEmpty

public boolean isEmpty()

指定者:

isEmpty 在接口中 Map<Byte,V>

clear

public void clear()

指定者:

clear 在接口中 Map<Byte,V>

containsKey

public boolean containsKey(byte key)

从接口复制的说明: ByteObjectMap

Indicates whether or not this map contains a value for the specified key.

指定者:

containsKey 在接口中 ByteObjectMap<V>

containsValue

public boolean containsValue(Object value)

指定者:

containsValue 在接口中 Map<Byte,V>

entries

public Iterable<ByteObjectMap.PrimitiveEntry<V>> entries()

从接口复制的说明: ByteObjectMap

Gets an iterable to traverse over the primitive entries contained in this map. As an optimization, the ByteObjectMap.PrimitiveEntrys returned by the Iterator may change as the Iterator progresses. The caller should not rely on ByteObjectMap.PrimitiveEntry key/value stability.

指定者:

entries 在接口中 ByteObjectMap<V>

values

public Collection<V> values()

指定者:

values 在接口中 Map<Byte,V>

hashCode

public int hashCode()

指定者:

hashCode 在接口中 Map<Byte,V>

覆盖:

hashCode 在类中 Object

equals

public boolean equals(Object obj)

指定者:

equals 在接口中 Map<Byte,V>

覆盖:

equals 在类中 Object

containsKey

public boolean containsKey(Object key)

指定者:

containsKey 在接口中 Map<Byte,V>

get

public V get(Object key)

指定者:

get 在接口中 Map<Byte,V>

put

public V put(Byte key,
    V value)

指定者:

put 在接口中 Map<Byte,V>

remove

public V remove(Object key)

指定者:

remove 在接口中 Map<Byte,V>

keySet

public Set<Byte> keySet()

指定者:

keySet 在接口中 Map<Byte,V>

entrySet

public Set<Map.Entry<Byte,V>> entrySet()

指定者:

entrySet 在接口中 Map<Byte,V>

toString

public String toString()

覆盖:

toString 在类中 Object

keyToString

protected String keyToString(byte key)

Helper method called by toString() in order to convert a single map key into a string. This is protected to allow subclasses to override the appearance of a given key.