V
- The value type stored in the map.public class ByteObjectHashMap<V> extends Object implements ByteObjectMap<V>
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.ByteObjectMap.PrimitiveEntry<V>
Modifier and Type | Field and Description |
---|---|
static int |
DEFAULT_CAPACITY
Default initial capacity.
|
static float |
DEFAULT_LOAD_FACTOR
Default load factor.
|
Constructor and Description |
---|
ByteObjectHashMap() |
ByteObjectHashMap(int initialCapacity) |
ByteObjectHashMap(int initialCapacity,
float loadFactor) |
Modifier and Type | Method and Description |
---|---|
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() |
clone, finalize, getClass, notify, notifyAll, wait, wait, wait
compute, computeIfAbsent, computeIfPresent, forEach, getOrDefault, merge, putIfAbsent, remove, replace, replace, replaceAll
public static final int DEFAULT_CAPACITY
public static final float DEFAULT_LOAD_FACTOR
public ByteObjectHashMap()
public ByteObjectHashMap(int initialCapacity)
public ByteObjectHashMap(int initialCapacity, float loadFactor)
public V get(byte key)
ByteObjectMap
get
in interface ByteObjectMap<V>
key
- the key whose associated value is to be returned.null
if the key was not found in the map.public V put(byte key, V value)
ByteObjectMap
put
in interface ByteObjectMap<V>
key
- the key of the entry.value
- the value of the entry.null
if there was no previous mapping.public V remove(byte key)
ByteObjectMap
remove
in interface ByteObjectMap<V>
key
- the key for the entry to be removed from this map.null
if there was no mapping.public boolean containsKey(byte key)
ByteObjectMap
containsKey
in interface ByteObjectMap<V>
public boolean containsValue(Object value)
containsValue
in interface Map<Byte,V>
public Iterable<ByteObjectMap.PrimitiveEntry<V>> entries()
ByteObjectMap
ByteObjectMap.PrimitiveEntry
s returned by the Iterator
may change as the Iterator
progresses. The caller should not rely on ByteObjectMap.PrimitiveEntry
key/value stability.entries
in interface ByteObjectMap<V>
public int hashCode()
public boolean equals(Object obj)
public boolean containsKey(Object key)
containsKey
in interface Map<Byte,V>
protected String keyToString(byte key)
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.Copyright © 2008–2019 The Netty Project. All rights reserved.