java.util.Dictionary< K, V > Class Template Reference

Inheritance diagram for java.util.Dictionary< K, V >:

Public Member Functions
	Dictionary ()
abstract Enumeration< V >	elements ()
abstract V	get (Object key)
abstract boolean	isEmpty ()
abstract Enumeration< K >	keys ()
abstract V	put (K key, V value)
abstract V	remove (Object key)
abstract int	size ()

Detailed Description

Note: Do not use this class since it is obsolete. Please use the Map interface for new implementations.

Dictionary is an abstract class which is the superclass of all classes that associate keys with values, such as

Hashtable 

.

See also

Hashtable

Since

1.0

Constructor & Destructor Documentation

Dictionary()

java.util.Dictionary< K, V >.Dictionary ( )

inline

Constructs a new instance of this class.

Member Function Documentation

elements()

abstract Enumeration<V> java.util.Dictionary< K, V >.elements ( )

abstract

Returns an enumeration on the elements of this dictionary.

Returns

an enumeration of the values of this dictionary.

See also

keys

size

Enumeration

get()

abstract V java.util.Dictionary< K, V >.get ( Object  key )

abstract

Returns the value which is associated with

key 

.

Parameters

key	the key of the value returned.

Returns

the value associated with

key 

, or

null 

if the specified key does not exist.

See also

put

isEmpty()

abstract boolean java.util.Dictionary< K, V >.isEmpty ( )

abstract

Returns true if this dictionary has no key/value pairs.

Returns

true 

if this dictionary has no key/value pairs,

false 

otherwise.

See also

size

keys()

abstract Enumeration<K> java.util.Dictionary< K, V >.keys ( )

abstract

Returns an enumeration on the keys of this dictionary.

Returns

an enumeration of the keys of this dictionary.

See also

elements

size

Enumeration

put()

abstract V java.util.Dictionary< K, V >.put ( K  key, V  value  )

abstract

Associate

key 

with

value 

in this dictionary. If

key 

exists in the dictionary before this call, the old value in the dictionary is replaced by

value 

.

Parameters

key	the key to add.
value	the value to add.

Returns

the old value previously associated with

key 

or

null 

if

key 

is new to the dictionary.

See also

elements

get

keys

remove()

abstract V java.util.Dictionary< K, V >.remove ( Object  key )

abstract

Removes the key/value pair with the specified

key 

from this dictionary.

Parameters

key	the key to remove.

Returns

the associated value before the deletion or

null 

if

key 

was not known to this dictionary.

See also

get

put

size()

abstract int java.util.Dictionary< K, V >.size ( )

abstract

Returns the number of key/value pairs in this dictionary.

Returns

the number of key/value pairs in this dictionary.

See also

elements

keys

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The documentation for this class was generated from the following file:

• src/java/util/Dictionary.java