HashMap (GWT 2.7.0)

java.lang.Object
- com.google.gwt.dev.util.collect.HashMap<K,V>

Type Parameters:

K - the key type

V - the value type

All Implemented Interfaces:

Serializable, Map<K,V>

Direct Known Subclasses:

IdentityHashMap
```
public class HashMap<K,V>
extends Object
implements Map<K,V>, Serializable
```
A memory-efficient hash map.

See Also:

Serialized Form

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

Constructor Summary

Constructors
Constructor and Description

HashMap()

HashMap(boolean stableWriteObject)

HashMap(Map<? extends K,? extends V> m)

Constructors
Constructor and Description
`HashMap()`
`HashMap(boolean stableWriteObject)`
`HashMap(Map<? extends K,? extends V> m)`

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method and Description
`void`	`clear()`
`boolean`	`containsKey(Object key)`
`boolean`	`containsValue(Object value)`
`protected void`	`doReadObject(ObjectInputStream in)` Adapted from `org.apache.commons.collections.map.AbstractHashedMap`.
`protected void`	`doWriteObject(ObjectOutputStream out)` Adapted from `org.apache.commons.collections.map.AbstractHashedMap`.
`Set<Map.Entry<K,V>>`	`entrySet()`
`boolean`	`equals(Object o)`
`V`	`get(Object key)`
`int`	`hashCode()`
`boolean`	`isEmpty()`
`protected boolean`	`keyEquals(Object a, Object b)` Returns whether two keys are equal for the purposes of this set.
`protected int`	`keyHashCode(Object k)` Returns the hashCode for a key.
`Set<K>`	`keySet()`
`V`	`put(K key, V value)`
`void`	`putAll(Map<? extends K,? extends V> m)`
`V`	`remove(Object key)`
`int`	`size()`
`String`	`toString()`
`protected boolean`	`valueEquals(Object a, Object b)` Returns whether two values are equal for the purposes of this set.
`protected int`	`valueHashCode(Object v)` Returns the hashCode for a value.
`Collection<V>`	`values()`

Methods inherited from class java.lang.Object
finalize, getClass

- Constructor Detail
  - HashMap
```
public HashMap()
```
  - HashMap
```
public HashMap(boolean stableWriteObject)
```
  - HashMap
```
public HashMap(Map<? extends K,? extends V> m)
```
- Method Detail
  - clear
```
public void clear()
```
    Specified by:
    
    clear in interface Map<K,V>
  - containsKey
```
public boolean containsKey(Object key)
```
    Specified by:
    
    containsKey in interface Map<K,V>
  - containsValue
```
public boolean containsValue(Object value)
```
    Specified by:
    
    containsValue in interface Map<K,V>
  - entrySet
```
public Set<Map.Entry<K,V>> entrySet()
```
    Specified by:
    
    entrySet in interface Map<K,V>
  - equals
```
public boolean equals(Object o)
```
    Specified by:
    
    equals in interface Map<K,V>
    
    Overrides:
    
    equals in class Object
  - get
```
public V get(Object key)
```
    Specified by:
    
    get in interface Map<K,V>
  - hashCode
```
public int hashCode()
```
    Specified by:
    
    hashCode in interface Map<K,V>
    
    Overrides:
    
    hashCode in class Object
  - isEmpty
```
public boolean isEmpty()
```
    Specified by:
    
    isEmpty in interface Map<K,V>
  - keySet
```
public Set<K> keySet()
```
    Specified by:
    
    keySet in interface Map<K,V>
  - put
```
public V put(K key,
             V value)
```
    Specified by:
    
    put in interface Map<K,V>
  - putAll
```
public void putAll(Map<? extends K,? extends V> m)
```
    Specified by:
    
    putAll in interface Map<K,V>
  - remove
```
public V remove(Object key)
```
    Specified by:
    
    remove in interface Map<K,V>
  - size
```
public int size()
```
    Specified by:
    
    size in interface Map<K,V>
  - toString
```
public String toString()
```
    Overrides:
    
    toString in class Object
  - values
```
public Collection<V> values()
```
    Specified by:
    
    values in interface Map<K,V>
  - doReadObject
```
protected void doReadObject(ObjectInputStream in)
                     throws IOException,
                            ClassNotFoundException
```
    Adapted from org.apache.commons.collections.map.AbstractHashedMap.
    
    Throws:
    
    IOException
    
    ClassNotFoundException
  - doWriteObject
```
protected void doWriteObject(ObjectOutputStream out)
                      throws IOException
```
    Adapted from org.apache.commons.collections.map.AbstractHashedMap.
    
    Throws:
    
    IOException
  - keyEquals
```
protected boolean keyEquals(Object a,
                            Object b)
```
    Returns whether two keys are equal for the purposes of this set.
  - keyHashCode
```
protected int keyHashCode(Object k)
```
    Returns the hashCode for a key.
  - valueEquals
```
protected boolean valueEquals(Object a,
                              Object b)
```
    Returns whether two values are equal for the purposes of this set.
  - valueHashCode
```
protected int valueHashCode(Object v)
```
    Returns the hashCode for a value.

Class HashMap<K,V>

Nested Class Summary

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

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Constructor Detail

HashMap

HashMap

HashMap

Method Detail

clear

containsKey

containsValue

entrySet

equals

get

hashCode

isEmpty

keySet

put

putAll

remove

size

toString

values

doReadObject

doWriteObject

keyEquals

keyHashCode

valueEquals

valueHashCode