java.lang.Object | |
↳ | java.util.Dictionary<K, V> |
Known Direct Subclasses
Hashtable
<K, V>
|
Known Indirect Subclasses |
Note: Do not use this class since it is obsolete.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
.
Public Constructors | |||||||||||
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Constructs a new instance of this class.
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Public Methods | |||||||||||
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Returns an enumeration on the elements of this dictionary.
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Returns the value which is associated with
key
.
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Returns true if this dictionary has no key/value pairs.
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Returns an enumeration on the keys of this dictionary.
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Associate
key
with
value
in this dictionary.
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Removes the key/value pair with the specified
key
from this
dictionary.
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Returns the number of key/value pairs in this dictionary.
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[Expand]
Inherited Methods
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From class
java.lang.Object
|
Returns an enumeration on the elements of this dictionary.
Returns the value which is associated with
key
.
key | the key of the value returned. |
---|
key
, or
null
if the
specified key does not exist.
Returns true if this dictionary has no key/value pairs.
true
if this dictionary has no key/value pairs,
false
otherwise.
Returns an enumeration on the keys of this dictionary.
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
.
key | the key to add. |
---|---|
value | the value to add. |
key
or
null
if
key
is new to the dictionary.
Removes the key/value pair with the specified
key
from this
dictionary.
key | the key to remove. |
---|
null
if
key
was not known to this dictionary.
Returns the number of key/value pairs in this dictionary.