java.util

Class Hashtable<K,V>

java.lang.Object

java.util.Dictionary<K,V>

java.util.Hashtable<K,V>

All Implemented Interfaces:

Map<K,V>

public class Hashtable<K,V>
extends Dictionary<K,V>
implements Map<K,V>

Constructor Summary

Constructors

Constructor and Description
Hashtable()
Hashtable(int capacity)
Hashtable(int capacity, float loadFactor)
Hashtable(Map<? extends K,? extends V> map)

Method Summary

Modifier and Type	Method and Description
void	clear()
boolean	contains(Object value)
boolean	containsKey(Object key)
boolean	containsValue(Object value)
Enumeration<V>	elements()
Set<Map.Entry<K,V>>	entrySet()
boolean	equals(Object object)
V	get(Object key)
int	hashCode()
boolean	isEmpty()
Enumeration<K>	keys()
Set<K>	keySet()
V	put(K key, V value)
void	putAll(Map<? extends K,? extends V> map)
protected void	rehash()
V	remove(Object key)
int	size()
String	toString()
Collection<V>	values()

Methods inherited from class java.lang.Object

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

Methods inherited from interface java.util.Map

compute, computeIfAbsent, computeIfPresent, forEach, getOrDefault, merge, putIfAbsent, remove, replace, replace, replaceAll

Constructor Detail

Hashtable

public Hashtable()

Hashtable

public Hashtable(int capacity)

Hashtable

public Hashtable(int capacity,
                 float loadFactor)

Hashtable

public Hashtable(Map<? extends K,? extends V> map)

Method Detail

clear

public void clear()

Specified by:

clear in interface Map<K,V>

contains

public boolean contains(Object value)

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>

elements

public Enumeration<V> elements()

Specified by:

elements in class Dictionary<K,V>

entrySet

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

Specified by:

entrySet in interface Map<K,V>

equals

public boolean equals(Object object)

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>

Specified by:

get in class Dictionary<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>

Specified by:

isEmpty in class Dictionary<K,V>

keys

public Enumeration<K> keys()

Specified by:

keys in class Dictionary<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>

Specified by:

put in class Dictionary<K,V>

putAll

public void putAll(Map<? extends K,? extends V> map)

Specified by:

putAll in interface Map<K,V>

rehash

protected void rehash()

remove

public V remove(Object key)

Specified by:

remove in interface Map<K,V>

Specified by:

remove in class Dictionary<K,V>

size

public int size()

Specified by:

size in interface Map<K,V>

Specified by:

size in class Dictionary<K,V>

toString

public String toString()

Overrides:

toString in class Object

values

public Collection<V> values()

Specified by:

values in interface Map<K,V>