ByteObjectHashMap (Netty API Reference (4.1.11.Final))

java.lang.Object
- io.netty.util.collection.ByteObjectHashMap<V>

Type Parameters:

V - The value type stored in the map.

All Implemented Interfaces:

ByteObjectMap<V>, Map<Byte,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.

Nested Class Summary
- Nested classes/interfaces inherited from interface io.netty.util.collection.ByteObjectMap
  ByteObjectMap.PrimitiveEntry<V>
- Nested classes/interfaces inherited from interface java.util.Map
  Map.Entry<K,V>

Field Summary

Fields
Modifier and Type Field and Description

static int DEFAULT_CAPACITY
Default initial capacity.

static float DEFAULT_LOAD_FACTOR
Default load factor.

Fields
Modifier and Type	Field and Description
`static int`	`DEFAULT_CAPACITY` Default initial capacity.
`static float`	`DEFAULT_LOAD_FACTOR` Default load factor.

Constructor Summary

Constructors
Constructor and Description

ByteObjectHashMap()

ByteObjectHashMap(int initialCapacity)

ByteObjectHashMap(int initialCapacity, float loadFactor)

Constructors
Constructor and Description
`ByteObjectHashMap()`
`ByteObjectHashMap(int initialCapacity)`
`ByteObjectHashMap(int initialCapacity, float loadFactor)`

Method Summary

All Methods Instance Methods Concrete Methods
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()`

Methods inherited from class java.lang.Object
clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface java.util.Map
compute, computeIfAbsent, computeIfPresent, forEach, getOrDefault, merge, putIfAbsent, remove, replace, replace, replaceAll

- Field Detail
  - DEFAULT_CAPACITY
```
public static final int DEFAULT_CAPACITY
```
    Default initial capacity. Used if not specified in the constructor
    
    See Also:
    
    Constant Field Values
  - DEFAULT_LOAD_FACTOR
```
public static final float DEFAULT_LOAD_FACTOR
```
    Default load factor. Used if not specified in the constructor
    
    See Also:
    
    Constant Field Values
- Constructor Detail
  - ByteObjectHashMap
```
public ByteObjectHashMap()
```
  - ByteObjectHashMap
```
public ByteObjectHashMap(int initialCapacity)
```
  - ByteObjectHashMap
```
public ByteObjectHashMap(int initialCapacity,
                         float loadFactor)
```
- Method Detail
  - get
```
public V get(byte key)
```
    Description copied from interface: ByteObjectMap
    
    Gets the value in the map with the specified key.
    
    Specified by:
    
    get in interface ByteObjectMap<V>
    
    Parameters:
    
    key - the key whose associated value is to be returned.
    
    Returns:
    
    the value or null if the key was not found in the map.
  - put
```
public V put(byte key,
             V value)
```
    Description copied from interface: ByteObjectMap
    
    Puts the given entry into the map.
    
    Specified by:
    
    put in interface ByteObjectMap<V>
    
    Parameters:
    
    key - the key of the entry.
    
    value - the value of the entry.
    
    Returns:
    
    the previous value for this key or null if there was no previous mapping.
  - putAll
```
public void putAll(Map<? extends Byte,? extends V> sourceMap)
```
    Specified by:
    
    putAll in interface Map<Byte,V>
  - remove
```
public V remove(byte key)
```
    Description copied from interface: ByteObjectMap
    
    Removes the entry with the specified key.
    
    Specified by:
    
    remove in interface ByteObjectMap<V>
    
    Parameters:
    
    key - the key for the entry to be removed from this map.
    
    Returns:
    
    the previous value for the key, or null if there was no mapping.
  - size
```
public int size()
```
    Specified by:
    
    size in interface Map<Byte,V>
  - isEmpty
```
public boolean isEmpty()
```
    Specified by:
    
    isEmpty in interface Map<Byte,V>
  - clear
```
public void clear()
```
    Specified by:
    
    clear in interface Map<Byte,V>
  - containsKey
```
public boolean containsKey(byte key)
```
    Description copied from interface: ByteObjectMap
    
    Indicates whether or not this map contains a value for the specified key.
    
    Specified by:
    
    containsKey in interface ByteObjectMap<V>
  - containsValue
```
public boolean containsValue(Object value)
```
    Specified by:
    
    containsValue in interface Map<Byte,V>
  - entries
```
public Iterable<ByteObjectMap.PrimitiveEntry<V>> entries()
```
    Description copied from interface: 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.
    
    Specified by:
    
    entries in interface ByteObjectMap<V>
  - values
```
public Collection<V> values()
```
    Specified by:
    
    values in interface Map<Byte,V>
  - hashCode
```
public int hashCode()
```
    Specified by:
    
    hashCode in interface Map<Byte,V>
    
    Overrides:
    
    hashCode in class Object
  - equals
```
public boolean equals(Object obj)
```
    Specified by:
    
    equals in interface Map<Byte,V>
    
    Overrides:
    
    equals in class Object
  - containsKey
```
public boolean containsKey(Object key)
```
    Specified by:
    
    containsKey in interface Map<Byte,V>
  - get
```
public V get(Object key)
```
    Specified by:
    
    get in interface Map<Byte,V>
  - put
```
public V put(Byte key,
             V value)
```
    Specified by:
    
    put in interface Map<Byte,V>
  - remove
```
public V remove(Object key)
```
    Specified by:
    
    remove in interface Map<Byte,V>
  - keySet
```
public Set<Byte> keySet()
```
    Specified by:
    
    keySet in interface Map<Byte,V>
  - entrySet
```
public Set<Map.Entry<Byte,V>> entrySet()
```
    Specified by:
    
    entrySet in interface Map<Byte,V>
  - toString
```
public String toString()
```
    Overrides:
    
    toString in class 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.

Class ByteObjectHashMap<V>

Nested Class Summary

Nested classes/interfaces inherited from interface io.netty.util.collection.ByteObjectMap

Nested classes/interfaces inherited from interface java.util.Map

Field Summary

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Methods inherited from interface java.util.Map

Field Detail

DEFAULT_CAPACITY

DEFAULT_LOAD_FACTOR

Constructor Detail

ByteObjectHashMap

ByteObjectHashMap

ByteObjectHashMap

Method Detail

get

put

putAll

remove

size

isEmpty

clear

containsKey

containsValue

entries

values

hashCode

equals

containsKey

get

put

remove

keySet

entrySet

toString

keyToString