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Enums
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Exceptions
Errors
- ServiceConfigurationError

Summary: Ctors | Methods | Inherited Methods | [Expand All]

Since: API Level 1

public abstract class

Dictionary

extends Object

java.lang.Object
↳	java.util.Dictionary<K, V>

Known Direct Subclasses

Hashtable<K, V>

Known Indirect Subclasses

AuthProvider, Properties, Provider

Class Overview

Note: Do not use this class since it is obsolete.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.

Summary

Public Constructors
	Dictionary() Constructs a new instance of this class.

Public Methods
abstract Enumeration<V>	elements() Returns an enumeration on the elements of this dictionary.
abstract V	get(Object key) Returns the value which is associated with `key`.
abstract boolean	isEmpty() Returns true if this dictionary has no key/value pairs.
abstract Enumeration<K>	keys() Returns an enumeration on the keys of this dictionary.
abstract V	put(K key, V value) Associate `key` with `value` in this dictionary.
abstract V	remove(Object key) Removes the key/value pair with the specified `key` from this dictionary.
abstract int	size() Returns the number of key/value pairs in this dictionary.

[Expand]

Inherited Methods

From class java.lang.Object

Object	clone() Creates and returns a copy of this `Object`.
boolean	equals(Object o) Compares this instance with the specified object and indicates if they are equal.
void	finalize() Invoked when the garbage collector has detected that this instance is no longer reachable.
final Class<?>	getClass() Returns the unique instance of `Class` that represents this object's class.
int	hashCode() Returns an integer hash code for this object.
final void	notify() Causes a thread which is waiting on this object's monitor (by means of calling one of the `wait()` methods) to be woken up.
final void	notifyAll() Causes all threads which are waiting on this object's monitor (by means of calling one of the `wait()` methods) to be woken up.
String	toString() Returns a string containing a concise, human-readable description of this object.
final void	wait() Causes the calling thread to wait until another thread calls the `notify()` or `notifyAll()` method of this object.
final void	wait(long millis, int nanos) Causes the calling thread to wait until another thread calls the `notify()` or `notifyAll()` method of this object or until the specified timeout expires.
final void	wait(long millis) Causes the calling thread to wait until another thread calls the `notify()` or `notifyAll()` method of this object or until the specified timeout expires.

Public Constructors

public Dictionary ()

Since: API Level 1

Constructs a new instance of this class.

Public Methods

public abstract Enumeration<V> elements ()

Since: API Level 1

Returns an enumeration on the elements of this dictionary.

Returns

an enumeration of the values of this dictionary.

public abstract V get (Object key)

Since: API Level 1

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.

public abstract boolean isEmpty ()

Since: API Level 1

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

Returns

true if this dictionary has no key/value pairs, false otherwise.

public abstract Enumeration<K> keys ()

Since: API Level 1

Returns an enumeration on the keys of this dictionary.

Returns

an enumeration of the keys of this dictionary.

public abstract V put (K key, V value)

Since: API Level 1

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.

public abstract V remove (Object key)

Since: API Level 1

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.

public abstract int size ()

Since: API Level 1

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

Returns

the number of key/value pairs in this dictionary.

Results

Interfaces

Classes

Enums

Exceptions

Errors

Dictionary

Class Overview

See Also

Summary

Public Constructors

public Dictionary ()

Public Methods

public abstract Enumeration<V> elements ()

Returns

See Also

public abstract V get (Object key)

Parameters

Returns

See Also

public abstract boolean isEmpty ()

Returns

See Also

public abstract Enumeration<K> keys ()

Returns

See Also

public abstract V put (K key, V value)

Parameters

Returns

See Also

public abstract V remove (Object key)

Parameters

Returns

See Also

public abstract int size ()

Returns

See Also