The java.util.Dictionary class is the abstract parent of any class, such as Hashtable, which maps keys to values.Following are the important points about Dictionary −
In this class every key and every value is an object.
In his class object every key is associated with at most one value.
Following is the declaration for java.util.Dictionary class −
public abstract class Dictionary<K,V> extends Object
|Sr.No.||Constructor & Description|
This is the single constructor.
|Sr.No.||Method & Description|
|1||abstract Enumeration<V> elements()
This method returns an enumeration of the values in this dictionary.
|2||abstract V get(Object key)
This method returns the value to which the key is mapped in this dictionary.
|3||abstract boolean isEmpty()
This method tests if this dictionary maps no keys to value.
|4||abstract Enumeration<K> keys()
This method returns an enumeration of the keys in this dictionary.
|5||abstract V put(K key, V value)
This method maps the specified key to the specified value in this dictionary.
|6||abstract V remove(Object key)
This method removes the key (and its corresponding value) from this dictionary.
|7||abstract int size()
This method returns the number of entries (distinct keys) in this dictionary.
This class inherits methods from the following classes −