An object that implements the Enumeration interface generates a
series of elements, one at a time. Successive calls to the
nextElement method return successive elements of the
series.
For example, to print all elements of a vector v:
for (Enumeration e = v.elements() ; e.hasMoreElements() ;) {
System.out.println(e.nextElement());
}
Methods are provided to enumerate through the elements of a
vector, the keys of a hashtable, and the values in a hashtable.
Enumerations are also used to specify the input streams to a
SequenceInputStream.
NOTE: The functionality of this interface is duplicated by the Iterator
interface. In addition, Iterator adds an optional remove operation, and
has shorter method names. New implementations should consider using
Iterator in preference to Enumeration.
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